Braun Dialog +Renal Dialysis Machine Manual

2. Techni cal System Description

1 / 20 20 0 3

Table of Contents

MT-MD MT-MD- DE08C M.KAY

2- 1

Page

General Information

2- 7

2.1

Overview Sub- Racks

2- 8

2.1.1

Legend Overview Sub- Racks

2- 8

2.2

Top Level Sub- Rack

2- 9

2.2.1

Legend Top Level Sub- Rack

2- 9

2.3

UF Sub- Rack

2- 10

2.3.1

Legend UF Sub- Rack

2- 10

2.4

DF Sub- Rack

2- 11

2.4.1

Legend DF Sub- Rack

2- 11

2.5

Water Inlet Sub- Rack

2- 12

2.5.1

Legend Water Inlet Sub- Rack

2- 12

2.6

Rinsing Bridge

2- 13

2.6.1

Legend Rinsing Bridge

2- 13

2.7

Rear Door

2- 14

2.7.1

Legend Rear Door

2- 14

2.8

TFT Monitor

2- 15

2.8.1

Legend TFT Monitor

2- 15

2.9

Power Board 1 PB1

2- 16

2.9.1

Legend Power Board 1 PB1

2- 16

2.10

Power Board 2 PB2

2- 17

2.10.1

Legend Power Board 2 PB2

2- 17

2.11

Supervisor Board SB

2- 18

2.11.1

Legend Supervisor Board SB

2- 18

2.12

Controller Board CB

2- 19

2.12.1

Legend Controller Board CB

2- 19

2.13

Switch Mode Power Supply SMPS (Benning)

2- 20

2.13.1

Legend Switch Mode Power Supply SMPS

2- 20

2.14

Front Door

2- 21

2.14.1

Legend Front Door

2- 21

2.15

Flow Diagram

2- 22

Dialog+ Dialog+_sm_Chapter 2_12_1-2003.doc/pdf 2003.doc/pdf <011003>ddm 003>ddmmyy

B. Braun Medizintechnol zintechnologie ogie GmbH



1 / 20 20 0 3

2- 2

2.15.1

Legend Flow Diagram

2- 23

2.16

Description Flow Diagram

2- 25

2.16.1

Water Inlet Section with Upline Tank

2- 25

2.16.2

Degassing Circuit with Temperature System

2- 26

2.16.3

Dialysate Processing

2- 27

2.16.4

Central Bicarbonate and Concentrate Supply

2- 28

2.16.5

BIC Cartridge Holder

2- 28

2.16.6

Balance Chamber System

2- 29

2.16.7

Working Principle Balance Chamber System

2- 29

2.16.8

Ultrafiltration and Rinsing Bridge

2- 31

2.16.9

Disinfection and Cleaning Program

2- 31

2.17

Block Diagram

2- 32

2.17.1

Legend Block Diagram

2- 33

2.18

TFT Monitor

2- 35

2.18.1

Description TFT Monitor

2- 35

2.19

ABPM Option ion (Non-Inv -Invasive ive Bloo lood Pressure Measurement)

2-37 -37

2.19.1

Wiring DiagramABPM Option

2- 37

2.20

bioL ioLogic RR Option tion (Autom tomatic Bloo lood Pressure Stab tabilisa ilisation tion)

2- 38

2.21

Supervisor Board SB

2- 39

2.21.1

Supervisor

2- 39

2.21.1.1

Block DiagramSupervisor

2- 39

2.21.1.2

Description Supervisor

2- 39

2.22

Bicarbonate Conductivity Measurement

2- 41

2.22.1

Bloc lock Diag iagramBica icarbonate Conductivity ity Measurement

2-41 -41

2.22.2

Description Bicarbonate Conductivity Measurement

2-41 -41

2.23

END Conductivity Measurement Controller

2- 42

2.23.1

Description ion END Conductivity ity Measurement Controlle ller

2-42 -42

2.23.2

END Conductivity Measurement Supervisor

2- 42

2.23.3

Bloc lock Diag iagramEND Conductivity Measurement Su Superviso isor

2- 42

2.23.4

Descripti iptio on END Conductivit ivity y Measurement Superviso isor

2-42 -42

2.24

Temperature Measurement

2- 43

2.24.1

Bloc lock DiagramDegassing ing Temperature Measurement

2-43 -43

2.24.2

Design Degassing Temperature Measurement

2-43 -43

2.24.3

Description Bicarbonate Temperature Measurement

2-43 -43





1 / 20 20 0 3

2- 2

2.15.1

Legend Flow Diagram

2- 23

2.16

Description Flow Diagram

2- 25

2.16.1


2- 25

2.16.2


2- 26

2.16.3


2- 27

2.16.4

Central Bicarbonate and Concentrate Supply

2- 28

2.16.5


2- 28

2.16.6

Balance Chamber System

2- 29

2.16.7

Working Principle Balance Chamber System

2- 29

2.16.8

Ultrafiltration and Rinsing Bridge

2- 31

2.16.9

Disinfection and Cleaning Program

2- 31

2.17

Block Diagram

2- 32

2.17.1

Legend Block Diagram

2- 33

2.18

TFT Monitor

2- 35

2.18.1

Description TFT Monitor

2- 35

2.19

ABPM Option ion (Non-Inv -Invasive ive Bloo lood Pressure Measurement)

2-37 -37

2.19.1

Wiring DiagramABPM Option

2- 37

2.20

bioL ioLogic RR Option tion (Autom tomatic Bloo lood Pressure Stab tabilisa ilisation tion)

2- 38

2.21

Supervisor Board SB

2- 39

2.21.1

Supervisor

2- 39

2.21.1.1

Block DiagramSupervisor

2- 39

2.21.1.2

Description Supervisor

2- 39

2.22


2- 41

2.22.1

Bloc lock Diag iagramBica icarbonate Conductivity ity Measurement

2-41 -41

2.22.2

Description Bicarbonate Conductivity Measurement

2-41 -41

2.23


2- 42

2.23.1

Description ion END Conductivity ity Measurement Controlle ller

2-42 -42

2.23.2

END Conductivity Measurement Supervisor

2- 42

2.23.3

Bloc lock Diag iagramEND Conductivity Measurement Su Superviso isor

2- 42

2.23.4

Descripti iptio on END Conductivit ivity y Measurement Superviso isor

2-42 -42

2.24


2- 43

2.24.1

Bloc lock DiagramDegassing ing Temperature Measurement

2-43 -43

2.24.2

Design Degassing Temperature Measurement

2-43 -43

2.24.3

Description Bicarbonate Temperature Measurement

2-43 -43





1 / 20 20 0 3

2- 3

2.24.4

Descriptio iption n Dialy ialys sate Contro troller ller Temperatur ture Measurement

2- 43

2.24.5 2.24.5

Block DiagramDialysate Supe Supervi rvisor sor Temperature rature Measurement

2-44

2.24.6

Descriptio iption n Temperature tureMe Mea asurement Dialy ialys sate Superviso isor

2- 44

2.25

Level Measurement

2- 44

2.25.1

Block DiagramLevel Measurement Upline Tank

2-44 -44

2.25.2

Description Level Measurement Upline Tank

2- 44

2.26

Reed Contacts

2- 45

2.26.1

Block DiagramCoupling Status

2- 45

2.26.2

Description Coupling Status

2- 45

2.27

Pressure Measurement

2- 45

2.27.1

Block DiagramVenous Pressure Measurement

2-45 -45

2.27.2

Description Venous Pressure Measurement

2- 45

2.27.3

Block DiagramArterial Pressure Measurement

2-46 -46

2.27.4

Description Arterial Pressure Measurement

2- 46

2.28

Blood Inlet Pressure Measurement

2- 46

2.28.1

Block DiagramBlood Inlet Pressure Measurement

2-46 -46

2.28.2

Description Blood Inlet Pressure Measurement

2-46 -46

2.29

Level Sensors

2- 47

2.29.1

Block DiagramLevel Sensors Air Separator

2- 47

2.29.2

Description Level Sensors Air Separator

2- 47

2.30

Red Detector

2- 47

2.30.1

Block DiagramRed Detector

2- 47

2.30.2

Description Red Detector

2- 47

2.31 2.31

Degassing Pre Pres ssure ure Me Mea asure urement and and Dialysa ialysate Pre Pres ssure ure Measurement

2-48

2.31.1

Block DiagramPressure Measurement

2- 48

2.31.2

Description Pressure Measurement

2- 48

2.32

Monitoring Analogue 12 V Voltage Supply

2- 48

2.32.1

Bloc lock Diag iagramMo Mon nitor itoring ing of An Analog logue 12 V Voltag ltage Supply

2- 48

2.32.2

Descripti iptio on Monito itoring ing of An Analog logue 12 V Volta ltage Supply

2-48 -48



2. Technical System Description

MT-MD-DE08C M.KAY

1 / 20 0 3

2- 4

2.33

Safety Air Detector SAD and Venous Red Detector RDV

2-49

2.33.1

Block DiagramSAD/RDV

2-49

2.33.2

General Information SAD

2-49

2.33.3

Description Safety Air Detector SAD

2-50

2.33.4

Description Venous Red Detector RDV

2-52

2.34

Blood Leak Detector

2-53

2.34.1

Block DiagramBlood Leak Detector

2-53

2.34.2

Description Blood Leak Detector

2-53

2.35

Controller Board CB

2-54

2.35.1

Block DiagramController Board

2-54

2.35.2

Description Controller Board

2-55

2.36

Power Board 1 PB1

2-57

2.36.1

Block DiagramPower Board 1

2-57

2.36.2

Description Power Board 1

2-57

2.37

Power Board 2 PB2

2-59

2.37.1

Block DiagramPower Board 2

2-59

2.37.2

Description Power Board 2

2-60

2.38

Heparin Pump Compact

2-62

2.38.1

Block DiagramHeparin Pump Compact

2-62

2.38.2

Description Heparin Pump Compact

2-62

2.39

Single Needle Cross Over

2-64

2.39.1

Block DiagramSN Cross Over

2-64

2.39.2

Description SN Cross Over

2-65

2.40

Staff Call (Option)

2-66

2.40.1

Block DiagramStaff Call

2-66

2.40.2

Description Staff Call

2-66

2.40.3

Operating Modes Staff Call System

2-67

2.40.4

Block DiagramAlarmMonitoring

2-67

2.40.5

Pin Assignment

2-67

2.41

Switch Mode Power Supply SMPS (Benning)

2-68

2.41.1

Block DiagramSwitch Mode Power Supply

2-68

2.41.2

SystemIntegration

2-69

2.41.3

Layout Switch Mode Power Supply SMPS

2-70

2.41.4

Wiring DiagramSwitch Mode Power Supply SMPS with Battery Option

2-71

2.41.5

Description Switch Mode Power Supply

2-72

Dialog+_sm_Chapter 2_1-2003.doc/pdf <011003>ddmmyy

B. Braun Medizintechnologie GmbH


MT-MD-DE08C M.KAY

1 / 20 0 3

2- 5

2.41.6

Pin Assignment Switch Mode Power Supply

2-72

2.42

Safety Concept

2-77

2.42.1

Block DiagramSafety Concept

2-77

2.42.2

Description Safety Concept

2-78




1 / 20 0 3

2- 6

with the options:

MT-MD-DE08C M.KAY


•

Double Pump

•


•

Central Concentrate Supply



1 / 20 0 3

2- 7

General Information Operation is accomplished via a touch screen (TFT monitor). Two microprocessor systems control and monitor the machine. The hardware concept consists of the following systems:

Top Level System

•

Top Level System

•

Low Level System

The top level systemconsists of the following components: • •

Communication module Top level controller TLC (motherboard)

•

Hard disk drive

•

Floppy disk drive

•

ABPM (option)

The communication between the user and the machine is performed via the top level. Example data exchange to communication module: •

Entry via input mask of the touch screen or keyboard

•

Output via the output mask of the TFT monitor

Example data exchange to low level: •

Low Level System

Transmitting and receiving of data from/to low level controller

The low level systemconsistsof the following components: •

Low level controller LLC

•

Supervisor SB

•

Power board PB1 and power board PB2

The low level controls and monitors all functions. Example data exchange to top level controller: •

Transmitting and receiving of data from/to low level controller

Example data exchange low level controller to supervisor: •

Transmitting and receiving messages, data and commands from/to supervisor

All sensors are connected to the processor systemvia the supervisor board. The actuators, motors and valves are driven via the power boards 1 and 2.

MT-MD-DE08C M.KAY




2.1

1 / 20 0 3

2- 8

Overview Sub-Racks

Fig. : Overview Sub-RacksRear View Dialog+

2.1.1

Legend Overview Sub-Racks 1 2

MT-MD-DE08C M.KAY


Top Level Sub-Rack UF Sub-Rack

3 4

DF Sub-Rack Water Inlet Sub-Rack



2.2

1 / 20 0 3

2- 9

Top Level Sub-Rack

1

2

Fig. : Top Level Sub-Rack

2.2.1

Legend Top Level Sub-Rack 1 2

MT-MD-DE08C M.KAY


Hard Disk Drive Motherboard



2.3

1 / 200 3

2 - 10

UF Sub-Rack

Fig. : UF Sub-Rack

2.3.1

Legend UF Sub-Rack Air Separator LA Air Separator Valve VLA Balance Chamber BK1/2 Bypass Valve VBP Dialyser Inlet Throttle DD DDE Dialyser Inlet Valve VDEBK1 VDEBK1 Dialyser Inlet Valve VDEBK2 VDEBK2 Dialyser Outlet Valve Balance Chamber VABK1

MT-MD-DE08C M.KAY


Dialyser Outlet Valve Balance Chamber VABK2 Dialyser Dialyser Outlet Valve Balance Chamber VD VDABK1 ABK1 Dialyser Dialyser Outlet Valve Balance Chamber VD VDABK2 ABK2 Inlet Valve Balance Chamber VEBK VEBK1 1 Inlet Valve Balance Chamber VEBK VEBK2 2 Membrane Position Sensor Balance Chamber MSBK1/2 Outlet Flow Pump FPA FPA Outlet Flow Pump Throttle RVFPA RVFPA



2.4

1 / 200 3

2 - 11

DF Sub-Rack

Fig. : DF Sub-Rack

2.4.1

Legend DF Sub-Rack BIC Pump BICP Bicarbonate Conductivity BICLF Bicarbonate Temperature Sensor T TSBIC SBIC Bicarbonate Throttle RVB Concentrate Pump KP Concentrate Throttle RVK RVK Degassing Chamber EK EK Degassing Control Valve RVE

MT-MD-DE08C M.KAY


Degassing Pressure Sensor PE Degassing Pump EP Dialysate Temperature Sensor Supervisor T TS SD D-S -S Dialysate Temperature Sensor T TSD SD ENDConductivity/Supervisor ENDLF/ENDLF-S LF/ENDLF-S Inlet Flow Pump FPE Inlet Flow Pump Throttle RVFPE RVFPE UF Pump UFP



2.5

1 / 200 3

2 - 12

Water Inlet Sub-Rack RVDA Outlet Ausgang

H PE

EP

Fig. : Water Inlet Sub-Rack(with and without Heat Exchanger WTOption)

2.5.1

Legend Water Inlet Sub-Rack Degassing Chamber EK EK Degassing Control Valve RVE Degassing Pressure Sensor PE Degassing Pump EP Degassing Temperature Sensor T TSE SE Heat Exchanger WT (Option)

MT-MD-DE08C M.KAY


Heater H Heater Inlet Temperature Sensor T TSHE SHE Heater Temperature Sensor T TSH SH Pressure Reducer Valve D DMV MV Upline Tank Inlet Valve VVBE VVBE Upline Tank VB



2.6

1 / 200 3

2 - 13

Rinsing Bridge

1

2

3

4

VD PDA VDE BL

Fig. : Rinsing Bridge

2.6.1

Legend Rinsing Bridge 1 Disinfection Valve VD 2 Pressure Sensor Dialysate Outlet PDA PDA

MT-MD-DE08C M.KAY


3 Dialyser Inlet Valve VDE 4 Blood LeakDetector BL



2.7

1 / 200 3

2 - 14

Rear Door

1 HOP

BIC-KV

PB2

PB1 SB 2 CB

SMPS

Fig. : Rear Door

2.7.1

Legend Rear Door BIC Cartridge Holder Board BIC-KV (Option) Controller Board CB HDF Online Power Board HOP HOP (Option) HFS 2 Board HFS2 with TSHE (Option) (2 2) Fan (1 1) Power Board 1 PB1

MT-MD-DE08C M.KAY


Power Board 2 PB2 SAKA Board SAKA with TSHE (Option) (2 2) Switch Mode Power Supply SMPS Supervisor Board SB Heater Inlet Temperature Sensor Board T TSHE SHE (2 2)



2.8

1 / 200 3

2 - 15

TFT Monitor

Fig. : TFTMonitor

2.8.1

Legend TFT Monitor Backlight Inverter Board BIB Front Panel Board FPB TFT Monitor TFT

MT-MD-DE08C M.KAY


Optical Status Display Board OSDB Touch Controller Board TCB Touch Screen



2.9

1 / 200 3

2 - 16

Power Board 1 PB1 V 7

C 1 2 6 C 3 7

V 2 0 R 7 5

C 1 4 8

R 7 1 V 5

V 2 2

V 2 1

U 1 3

V 3 4

C 5 0 V 3 3

C 3 9

R 3 1 2

P5

V 3 2

V 1 0

C 1 2 7 C 6 2

C 9 3 V 2 3 R 1 3 1

R 1 2 7

V 2 4

V 2 5

C 6 5 V 3 6 V 3 5

V 1 3

C 1 2 8

C 1 4 6

C 8 6

V 2 6 R 1 8 6

C 1 1 7

V 1 1

V 2 7

R 1 8 2

V 2 8

P7 U 1 5

V 3 8

C 8 9 V 4 0

C 3 4

V 3 9

V 4

C 1 2 5

C 1 5

C 1 2 4

U 1 4

V 3 7

C 6 4

C 1 4 7

P6

V 8

V 1 7 R 1 4

V 1 9

R 1

P1

V 1 V 1 8

U 1 2

V 3 1

C 1 8

V 3 0 V 2 9

C 1 7 P 4

P4

P3

P2 Fig. : Power Board 1 PB1

2.9.1

Legend Power Board1 PB1 P1 P2 P3 P4

MT-MD-DE08C M.KAY

Arterial BloodPump BPA BPA Supervisor Board SB SB Voltage Supply SensorsBlood Pump Cover switch


P5 P6 P7

Inlet Flow Pump FPE FPE Outlet Flow Pump FPA FPA Degassing Pump EP EP



2.10

1 / 200 3

2 - 17

Power Board 2 PB2

P3

V 3 2

V 3 3

V 3 4

V 3 5

P1

V 3 6

V 3 7

U 2 4 C 7 8

V 3 8

V 3 9

V 4 0

V 4 1

U 2 5

V 4 2

V 4 3

V 4 4

V 4 5 V 3 V 4 6

U 2 6 V 4 7

P5

C 9 3

P4

C 8 3

P2 Fig. : Power Board 2 PB2

2.10.1

LegendPower Board 2 PB2 P1

MT-MD-DE08C M.KAY

for Valves andSAKV: Upline Tank Inlet Valve RVVB RVVB Degassing Control Valve RVE VenousTubing Clamp Currentles Closed SAKV-SG Dialyser Outlet Valve VD A VDA Dialyser Inlet Valve VD VDE E Balance Chamber Valves VABK1/2, VDABK1/2, VEBK1/2, VEBK1/2, VDEB VDEBK1/2 K1/2 Air Separator Valve VLA Circulation Valve VZ VZ Bypass Valve VBP


P2 P3

P4 P5

Supervisor Board SB SB Piston Pumps: Concentrate Pump KP KP, Bicarbonate Pump BICP, BICP Ultrafiltration Pump UFP UFP Voltage Supply Disinfection Valve VD



2.11

1 / 200 3

2 - 18

Supervisor Board SB

P11 P12

P8

P19 K1

P5

P2

P9 14

P6 P7

P3

P18

P10

P23

P15 P17 P13

P1 P4 P16

Fig. : Supervisor Board SB

2.11.1

LegendSupervisor Board SB P1/P2/P3 P4 P5 P6 P7 P8 P9 P10 P1 1 P11 P12

MT-MD-DE08C M.KAY

Controller Board CB BICSS/KSS/RDVLED/SAD RTS/TX/CTS/RX Signals Staff Call Signals BPV/PBS/SAKA Signals BL Signals REM/HOFF/HREL Signals SCB-RX/TX/CTS/RTS Signals BP/EP/FP Signals VVBE/KP/BICP/UFP/SKAV/VDE/VDA Signals Heparin Pump Signals


P13 P14 P15 P16 P17 P18 P19 K1

Pressure Sensor PBE PBE Voltages +5 V/+24 VL/+24 VGB/+12 VAN/-12 VAN ENDLF/ENDLF-S/BICLF/TSD/TSD-S/TSBIC/TSESignals Voltages +5 VREF/+12 VAN/-12 VAN Voltages +5 V/12 VD/-12 VD Extension Connector Communication Program Adapter Hardware Switch: Position 0: Therapy Mode Position 2: TSM Service ProgramMode Position 3: Software Update Mode



2.12

1 / 200 3

2 - 19

Controller Board CB

P2

P5

U9

U2

U5

P3

U11

P1

U3

U12

U10

U6

U8

U22

U25

U18

U26

U1

U51

U33

Fig. : Controller Board CB

2.12.1

Legend Controller Board CB P1/P2/P3

MT-MD-DE08C M.KAY

Supervisor Board SB SB


P5

ProgramAdapter with Memory Card



2.13

1 / 200 3

2 - 20

Switch Mode Power Supply SMPS (Benning) LED +12VD / F401 - T1.25A TR5 +12VD / F402 - T5.00A TR5 +12VAN / F403 - T1.25A TR5 +5VD / F303 - T3.15A TR5 +5VD / F302 - T5.00A TR5 +5VD/ F301 - T3.15A TR5 +5VD / F304 - T3.15A TR5 +24 VGB/ F602 - T3.15A TR5 +24VGB/ F601 - T3.15A TR5

PE3 N3 L3 N2 L2

X2 F4 X3 X1.3 X1.1 X1.2 X1.6 X1.5 X1.4 X1 F3 F5 F6 F2 F1 PE

L

N

PE L1 N1

1

P12

F401 F402

3

F403

1

P10

F303 F302

3

+24V

1

F301 F304

F1 T6.25A 6.3x32 F2 T6.25A 6.3x32 F3 T3.15A TR5 F4 T3.15A TR5 F5/F6 - 110/120V: F20A 6.3x32 - 230V: M10A 6.3x32

P4 3

F602

1

F601

P5 3

1

F301 T3.15A TR5 F302 T5.0A TR5 F303 T3.15A TR5 F304 T3.15A TR5 F401 T1.25A TR5 F402 T5.00A TR5 F403 T1.25A TR5 F500 T3.15A TR5 F600 M10.00A 6.3x32 F601 T3.15A TR5 F602 T3.15A TR5

+

2

P13

P3

1 1

P9

1

3

4

P7

1 2

P8 1

X100

3

1

P2

1

P101 3

1

Fig. : Switch Mode Power Supply SMPS (Benning)

2.13.1

LegendSwitch Mode Power Supply SMPS X1 X2 X3 P2 P3 P4 P5 P6 P7

MainsInput, Heater Fluid Warmer (via Relay) Supervisor/Watchdog, Service Board Battery Connection (Screw Terminal) Power Board1/2 Supervisor/Controller Board Floppy Disk Drive Options, Service Board (Service Tool)

F1/F2 6.25 AT (6.3x32), Mains Input F3/F4 3.15 AT (TR5), Fluid Warmer +Monitor F5/F6 10 AM (6.3x32), Heater 1800 W (240 V) 20 AF (6.3x32), Heater 1800 W (110/120 V) F3 01 3.15 AT(TR5), +5 VD F301 F3 02 5.00 AT(TR5), +5 VD F302 F303/ 3.15 AT(TR5), +5 VD F304

MT-MD-DE08C M.KAY


P8 ABPM P9 Fan, Mains Switch P10 PC P11 Hard Disk Drive P12 Options P13 P14 EXT ON P101 Service Watchdog X1 X100 00 Fan F401 F401 F402 F403 F6 00 F600 F60 1/ F601/ F602

1.25 AT (TR5), +12 VD 5.00 AT (TR5), +12 VD 1.25 AT (TR5), +12 VAN 10 AM (6.3x32), +24 VL 3.15 AT (TR5), +24 VGB



2.14

1 / 200 3

2 - 21

Front Door HP

PV SN

HP

PA

PBS/SN

PBE

SN

PV SN

PBA

PBS/SN

PA SN

PBV

PBA

SAD

PBE

PBV

SAD

1 SAKV-SG

SAKA

2

SAKV-SG

SAKA

2

Fig. : Front Door

2.14.1

Legend Front Door Arterial Blood Pump BPA Arterial Pressure Sensor PA Arterial Tubing Clamp SAKA-SG SAKA-SG Cover for Suction Rods 2 Heparin Pump Compact HP Pressure Sensor PBE

MT-MD-DE08C M.KAY


Pressure Sensor PBS/SN Safety Air Detector SAD SAD/Venous Red Detector RD V RDV Substitution Port 1 Venous Blood Pump BPV Venous Pressure Sensor PV Venous Tubing Clamp Currentles Closed SAKV-SG SAKV-SG


DM i T a l o g M + _ D s mD _ E C 0 h 8 a p C t M e r 2 . _ K 1 A -2 Y 0 0 3 . d o c / p d f < 0 1 1 0 0 3 > d d m m y y

PV

TSH

TSE

T

T

PA

PBE

BPA

RVE EP

EK

BPV

PA

PBE

Double-Needle

BPA

HP

HP

PE

SAD RDV

Water Sub-Rack Wasser-Einschub

H

PV

PBS

SAD RDV SAKA

SAKV-SG

Single-Needle

DFSub-Rack DF-Einschub

C NSVB

A

UF Sub-Rack UF-Einschub

Pyrogen Filter Pyrogenfilter

Rinsing Bridge Spülbrücke

DDE VVB

RVK

RVB

VDE

TSD TSD-S BK1

VDEBK1

TSBIC BICLF

VABK1

FPE

ENDLF ENDLF-S

VBP FBK1

LAB1

Z.D.

VDABK1

VEBK1 MSBK1

Dialysator

VBKO B

VDEBK2

VABK2

VEBK2

VDABK2

VLA

V.D.

LAFS

BL

FVD

PDA

MSBK2

RVDA

WT VVBE

WasserZU Water Inlet Luft Air Wasser Water Bicarbonat Bicarbonate Konzentrat Concentrate Dialysierfluß 1 DialysateFlow 1 Dialysierfluß 2 DialysateFlow 2 Dialysierflüssigkeit Dialysate Desinfektionsmittel Disinfectant Optionen Options

LAB2

Dialysat AB Dialysate Outlet

C

VZ

Zentrale BicarbonatVersorgung Central VBKS Bicarbonate FBIC Supply

Luft Air SBS1

UFP

KSS

RVFPA

D e s c r i p t i o n

S1

VD

FD

FK

BE

KE

BIC-Konzentrat BIC Concentrate

Heparin

KVA Zentrale KonzentratVersorgung Central Concentrate Supply

Disinfectant (Rear Side of Unit) Desinfektionsmittel (Geräterückseite)

Konzentrat Säurekonzentrat Concentrate Acid Concentrate

1 / 200 3

2.15.1 LegendFlow Diagram Abbreviation

Description

BE

Bicarbonate Withdrawal Rod

BICLF

Bicarbonate Conductivity

BICP

Bicarbonate Pump

BICSS

Bicarbonate Rinsing Connection Sensor

BK1

Balance Chamber 1

BK2

Balance Chamber 2

BL

Blood Leak Detector

BPA

Arterial Blood Pump

BPV

Venous Blood Pump

BVA

Bicarbonate Supply Connection (Central Supply)

DBK

Throttle BicarbonateCartridge Holder

DDE

Throttle Dialyser Inlet

DMV

Pressure Reducer Valve

EK

Degassing Chamber

ENDLF

END Conductivity

ENDLF-S

END Conductivity Supervisor

EP

Degassing Pump

FB

Filter Bicarbonate

FBIC

Filter Bicarbonate Cartridge

FBK1

Filter Balance Chamber 1

FBK2


S2

1 / 2 0 0 3

2 2 2


LA

SBS2

BICSS

Blut Arteriell Blood Arterial Blut Venös Blood Venous

FPA

B

2 . T e c h n i c a l S y s t e m

LVD

FB

BVA

BKUS

*

FBK2

BK2 FM

VBICP

DMV

Dialyser

KP

BICP

B . B r a u n M e d i z i n t e c h n o l o g i e G m b H

F l o w D i a g r a m

SAKV-SG

VB TSHE T

DBK

2 .1 5

2 - 23


1 / 200 3

2 - 23

2.15.1 LegendFlow Diagram

MT-MD-DE08C M.KAY

Abbreviation

Description

BE

Bicarbonate Withdrawal Rod

BICLF


BICP

Bicarbonate Pump

BICSS

Bicarbonate Rinsing Connection Sensor

BK1

Balance Chamber 1

BK2

Balance Chamber 2

BL

Blood Leak Detector

BPA

Arterial Blood Pump

BPV

Venous Blood Pump

BVA

Bicarbonate Supply Connection (Central Supply)

DBK

Throttle BicarbonateCartridge Holder

DDE

Throttle Dialyser Inlet

DMV

Pressure Reducer Valve

EK

Degassing Chamber

ENDLF

END Conductivity

ENDLF-S

END Conductivity Supervisor

EP

Degassing Pump

FB

Filter Bicarbonate

FBIC

Filter Bicarbonate Cartridge

FBK1


FBK2


FK

Filter Concentrate

FM

Flowmeter

FPA

Outlet Flow Pump

FPE

Inlet Flow Pump

FVD

Filter from Dialysate

H

Heater

HP

Heparin Syringe Pump

KE

Concentrate Withdrawal Rod

KP

Concentrate Pump

KSS

Concentrate Rinsing Connector Sensor

KVA

Concentrate Supply Connector (Central Supply)

LA

Air Separator

LAB1

Air Separator BIC Cartrige Holder 1

LAB2

Air Separator BIC Cartrige Holder 2

LAFS

Air Separator Level Sensors

LVD

Light Barrier Disinfection Valve

MSBK1

Membrane Position Sensor Balance Chamber 1

MSBK2


NSVB

Level Sensor Upline Tank

PA

Arterial Pressure Sensor

PBE

Pressure Sensor Blood Inlet

PBS

Blood Pressure Control Sensor

PDA

Pressure Sensor Dialysate Outlet

PE

Degassing Pressure Sensor

PV

Venous Pressure Sensor



2. Technical System Description RDV

Venous Red Detector

RVB

Throttle Bicarbonate

RVDA

Throttle DialysateValve

RVE

MT-MD-DE08C M.KAY

Throttle Flow Pump Outlet

RVFPE

Throttle Flow Pump Inlet

RVK

Throttle Concentrate

RVUF

Throttle Ultrafiltration

SAD

Safety Air Detector

SAKA

Arterial Tubing Clamp

SAKV-SD

Venous Tubing Clamp Currentles Closed

SBS1

Rinsing Bridge Connector Sensor 1

SBS2


TSBIC

Bicarbonate Temperature Sensor

TSD

Dialysate Temperature Sensor

TSD-S

Dialysate Temperature Sensor Supervisor

TSE

Degassing Temperarture Sensor Thermal Fuse Heater Element

TSHE

Heater Inlet Temperature Sensor

UFP

Ultrafiltration Pump

VABK1

Outlet Valve Balance Chamber 1

VABK2


VB

Upline Tank

VBICP

Bicarbonate Pump Valve

VBKO

Bicarbonate Cartridge Holder Top Valve

VBKS

Bicarbonate Cartridge Holder Concentrate Rod Valve

VBP

Bypass Valve

V.D.

Dialyser Coupling (from Dialysate)

VD

Disinfection Valve

VDA

Dialyser Outlet Valve

VDABK1

Dialyser Outlet Valve Balance Chamber 1

VDABK2


VDE

Dialyser Inlet Valve

VDEBK1

Dialyser Inlet Valve Balance Chamber 1

VDEBK2


VEBK1

Inlet Valve Balance Chamber 1

VEBK2


VLA

Air Separator Valve

VVB

Upline Tank Valve

VVBE

Upline Tank Inlet Valve

VZ

Circulation Valve

WT

Heat Exchanger

Z.D.

Dialyser Coupling (to Dialysate)


2 - 24

Degassing Control Valve

RVFPA

TSH

1 / 200 3



2.16

1 / 200 3

2 - 25

Description Flow Diagram The flow diagramcan be divided into six sections: •


•


•


•

Balance Chamber

•

Ultrafiltration

•

Rinsing Bridge

2.16.1 Water Inlet Section with Upline Tank The water inlet section has the following components •

Pressure Reducer Valve DMV

•

Upline Tank Inlet ValveVVBE (2/2 way valve)

•

Upline Tank VB

•

Level Sensors Upline Tank NSVB

•

Heat Exchanger WT(Option)

Pressure Reducer Valve DMV

TSE

The pressure reducer valve DMV limits the pressure of the inlet water (e.g. osmosis water) KSS to a maximumof approx. 1.3 bar.

VB

NSVB

Upline Tank Inlet ValveVVBE

RVE

WT

VVBE

The valve VVBE is time-delayed controlled via the level sensor NSVB (top) in the upline tank VB. The delay time depends on the dialysate flow. Level Sensors Upline Tank NSVB

RVB VZ

The level sensors are mounted in the upline tank. NSVB top: closed

- VVBE is closed

NSV B bottom (monitoring low water level): NSVB closed (alarm) - Water inlet is disturbed - Heater is switched off Heat Exchanger WT(Option)

DMV RVDA

The cold inlet water can be warmed up via the optional heat exchanger WT. Thereby the heat consumption to heat up the water can be reduced.

Fig. : Water Inlet with Upline Tank

MT-MD-DE08C M.KAY




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2.16.2 Degassing Circuit with Temperature System The degassing circuit with temperature systemhas the following components:

Degassing Control Valve RVE Degassing Pressure Sensor PE Degassing Pump E P EP

•

Degassing Control Valve RVE

•

Degassing Pressure Sensor PE

•

Degassing Chamber EK EK

•

Degassing Pump EP EP

•

Thermal Fuse Heater Element T TSH

•

Temperature Sensor Heater Inlet T TSHE

•

Heater Element H

•

Degassing Temperature Sensor T TS SE E

The control valve RVE, pressure sensor PE, degassing chamber EK and degassing pump EP produce and measure a negative pressure respectively. The negative pressure is produced to separate the dissolved gas fromthe water. The control valve RVE reduces the flow (throttle principle) depending on the measured pressure at the pressure sensor PE. Thereby the desired negative pressure is gained between the control valve RVE and the degassing pump EP. The value of the negative pressure is approx. -500 mmHg and thus always higher than the lower pressure of the dialysate behind the dialyser. The degassing pump works with constant speed, which is determined by the dialysate, unless the negative pressure is insufficient at the smallest opening of RVE. Then the speed of EP is increased.

Heater Element H Thermal Fuse Heater Element TSH Degassing Tem Temperature Sensor TS E TSE

The heater H has an integrated thermal fuse TSH as a thermal cut-off. The temperature sensor TSE measures the actual temperature posterior to the heater.

Temperature Control

The temperature of the water inlet determines the amount of heat which the heater must supply, to replace the amount of heat (dialysate flow and dialysate temperature) withdrawn by the drainage. The differential temperature between the heater inlet (TSHE) and the heater outlet (TSE) determines the controlled variable for the heater, depending on the dialysate flow and dialysate temperature.

TSE

TSH

T

T

VLA RVE EP

EK

PE

H

T zumVB/to VB

TSHE

vomVB/fromVB

Fig. : Degassing Circuit with Temperature System

MT-MD-DE08C M.KAY




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2.16.3 Dialysate Processing The dialysateprocessing has the following components: •

Bicarbonate Concentrate Pump BICP

•

Bicarbonate Throttle RVB RVB

•

Bicarbonate Temperature Sensor T TSBIC

•

Bicarbonate Conductivity BICLF BICLF

•

Concentrate PumpKP

•

Concentrate Throttle RVK

•

ENDConductivity ENDLF ENDLF

•

ENDConductivity Supervisor ENDLFS ENDLFS

•

Dialysate Temperature Sensor T TS SD D

•

Dialysate Temperature Sensor Supervisor T TSD SDS

•

Inlet Flow Pump FPE

•

Inlet Flow Pump Throttle RVFPE RVFPE

The main components of the dialysate preparation are the bicarbonate concentrate pump BICP and the concentrate pump KP, with the conductivity cells BICLF and ENDLF and a flow pump FPE. The flow pump FPE delivers the dialysate. The bicarbonate concentrate, which is added via the bicarbonate pump BICP, is measured by the conductivity measurement cell BICLF. Thereby the pump can control the given conductivity set-point value. The concentrate or acid concentrate addition has the same working principle. The nonreturn valves RVB and RVK stablise the dosage of the bicarbonate and concentrate. The temperature sensors TSBIC and TSD are responsible for: •

the temperature compensation of the conductivity measurement and

•

temperature measurement TSD after the addition of cold concentrate (second measurement sensor for temperature system) and thus compensation of temperature loss.

The conductivity sensor ENDLFS is an independent monitoring unit (supervisor). The geometry of the ENDLFS sensor is different (but has the same cell constant) than the ENDLF sensor of the controller. Thereby a deposit on the sensor can be identified. The temperature compensation is carried out by the temperature sensor TSDS. The temperature sensor additionally monitors the dialysate flow temperature for the supervisor. The ENDLFS and TSDS sensors have no influence on the respective control. The throttle RVFPE prevents a high pressure build-up and thus a bursting of tubing if the flow path is blocked behind FPE. If the set pressure is reached RVFPE is opened and the fluid can circulate.

RVFPE

vomVB fromVB

ENDLF ENDLF-S

BICLF TSBIC

TSD TSD-S

T

T T

RVB

FPE

RVK

BICP

zu Bilanzierungskammern to Balance Chambers

KP vomBicarbonat fromBicarbonate

vomKonzentrat fromConcentrate

Fig. : Dialysate Processing

MT-MD-DE08C M.KAY




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2 - 28

2.16.4 Central Bicarbonate and Concentrate Supply A canister or central supply can be selected via the bicarbonate and concentrate supply connetion BVA and KVA. Thesupply connection is an option. The flow pump FPE guarantees a continuous control of the desired dialysate flow into the balance chambers. The flow rate is determined by the filling time of the balancechamber. The flow pump FPE is controlled via the predetermined volume of the chamber and a continuous detection of the position of the membrane.

2.16.5 BIC Cartridge Holder DBK DBK DBK

LAB1

T Throttle Bicarbonate Bicarbonate Cartridge Holder DBK ensures a constant pressure (approx. 200 mmHg) during the filling of the bicarbonate cartridge. Air Separator Sep Separa arator tor BIC BIC Cartrige Cartrige Holder Holder 1 1 Cartrige LAB1 ensures that only fluid can enter the bicarbonate cartridge.

VBKO

Bicarbonate Bicarbonate Cartridge CartridgeHolde Top Valve Valve Holderr Top The bicarbonate cartridge is filled to the limit presure (200 mmHg) after VBKO opens.

VBKS

Bicarbonate Bicarbonate Cartridge Holder Holder Concentrate Concentrate Rod Valve Valve Concen trate Rod The bicarbonatecartridge is vented during preparation and in therapy, i.e. VBKO closes and VBKS opens for a short time. This is repeated in regular intervals during threapy. VBKS is opened after the end of the therapy to empty the bicarbonate cartridge.

VBICP

Bicarbonate BicarbonatePump Valve If VBICP is opened the liquid level in LAB2 is increased. VBICP switches the BIC pump in bypass after the end of the therapy to empty the bicarbonate cartridge.

LAB2

Air Separator Sep Separa arator tor BIC BIC Cartrige Cartrige Holder Holder 2 2 Cartrige LAB2 serves as a buffer chamber for the bicarbonate cartridge (and canister) to prevent conductivity malfunctions/deviations during therapy.

VVB

Upline Tank Va Valv lve e VVB cuts off the main flow after the end of the therapy to empty the bicarbonate cartridge via FPE (VBICP and VBKS are opened).

BICLF

ENDLF

TSBIC

vomVorlaufbehälter fromUplineTank

VVB

DBK

TSD RVK

RVB BICP

FPE

ENDLF-S TSD-S

KP VBICP

LAB1

LAB2

VBKO

VBKS BVA

FBIC

FB BE

Fig. : BIC Cartridge Holder (Option)

MT-MD-DE08C M.KAY




1 / 200 3

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2.16.6 Balance Chamber System The balance chamber systemhas the following components: •

Balance Chamber BK1

•

Balance Chamber BK2

•

Balance Chamber Dialyser Inlet Valve VDEBK1 VDEBK1and VDEBK2

•

Balance Chamber Inlet ValveVEBK1 VEBK1and VEBK2

•

Balance Chamber Membrane Position Sensor MSBK1 MSBK1and MSBK2

•

Balance Chamber Dialyser Outlet ValveVDABK1 VDABK1and VDABK2

•

Balance Chamber Outlet ValveVABK1 VABK1 and VABK2

The measurement and control of the ultrafiltration rate is accomplished by the double balance chamber systemand the ultrafiltration pump UFP. Both balance chambers BK1 and BK2 are identical. The chambers have flexible membranes, which can be moved to both sides. The membranes devide the chambers into two sub-compartments. The flow direction is defined by the membranes and the eight solenoid valves. The position of the membranes is measured by inductive membrane position sensors MSBK1 and MSBK2. The membrane position sensors (ferrites) are connected to the membranes and each move in a respective coil MSBK1 and MSBK2.

2.16.7 WorkingPrinciple Balance Chamber System The balance chamber BK1 is filled with dialysate at the beginning of phase 1. The membrane is in right position. The valves VDEBK1 and VDABK1 are opened. The balance chamber BK1 is filled by the outlet flow pump FPA, via valve VDABK1. Simultaneously the dialysate is removed from the balance chamber BK1 via valve VDEBK1. Phase 1 is completed and the membrane is in left position (see figure).

Phase 1:

The balance chamber BK2 is filled with fresh dialysate during this period. The used dialysate from the previous phase 2 is drained (see description phase 2).

DDE

PE/RVE

VDE

FPE BK1

VDEBK1

VEBK1

MSBK1

VDABK1

VDEBK2

VABK2

VLA VDA

LA_FS

MSBK2

BL

VDABK2

VEBK2

BK2

RVDA

VBP

VABK1

VZ

FPA

UFP

PDA

LA RVFPA

open offen closed geschlossen

Fig. : Phase 1 Balance Chamber

MT-MD-DE08C M.KAY



2. Technical System Description Phase 2:

1 / 200 3

2 - 30

After phase 1 is completed there is an automatic switch to the filled balance chamber BK2 to obtain a constant flow in the dialyser. The complete cylce is repeated in phase 2, i.e. valves VDEBK2 and VDABK2 are opened. The balance chamber BK2 is filled via valve VDABK2. Simultaneously the dialysate is drained from the balance chamber BK2 via valve VDEBK2. Phase 2 is completed and the menbrane is in left position (see figure). Simultaneously the balance chamber BK1 is filled with fresh dialysate. Therefore valve VEBK1 is opened. Valve VABK1 is also opened, to initiate the flow path for the used dialysate to the drain. The membrane moves to the right position. The outlet fluid volume is equal to the returned fluid volume, due to the closed balance chamber system The fluid volume removed from the closed system via the ultrafiltration pump UFP is replaced from the blood in the dialyser and equals the precise ultrafiltration volume. The system is initialised in preparation, i.e. the membrane sensors are automatically calibrated and the speed of the flow pumps FPE and FPA are determined. Thus a synchronisation of the membranes is guaranteed, and the pump speeds for the desired flow are determined.

DDE

PE/RVE

VDE

FPE BK1

VDEBK1

VEBK1

MSBK1

VDABK1

VDEBK2

VABK2

VLA VDA

LA_FS

MSBK2

BL

VDABK2

VEBK2

BK2

RVDA

VBP

VABK1

VZ

FPA

UFP

PDA

LA RVFPA

open offen closed geschlossen

Fig. : Phase 2 Balance Chamber

MT-MD-DE08C M.KAY




1 / 200 3

2 - 31

2.16.8 Ultrafiltration and Rinsing Bridge The main flow path and bypass have the following components: •

Dialyser Inlet ThrottleDDE D DE DD

•

Dialyser Inlet Valve VDE VDE VD

•

Dialyser Outlet Valve VDA VDA

•

Bypass Valve VBP

•

Outlet Flow PumpFPA

The flow path for the main flow and bypass are determined by the valves VDE, VDA and VBP. The built up flow from the flow pump FPA is stabilised by the throttle DDE. Valves VDE and VBP are closed for sequential therapy (ultrafiltration without dialysate fluid flow). The ultrafiltrate removal is carried out by the ultrafiltration pump UFP. Further components are: •

Red sensitive blood leak detector BL

•

Pressure sensor PDA which monitors the dialysate pressure (also used to calculate TMP)

•

Air separator LA with built in level sensors LAFS and air separator valve VLA

•

Throttle RVDA functions as a resistance to stabilise the flow of FPE

The throttle RVFPE prevents a high pressure build-up and thus a bursting of tubing if the flow path is blocked behind FPE. If the set pressure is reached RVFPE is opened and the fluid can circulate. The fluid level is lowered in the air separator LA, due to air bubbles from the dialyser (degassing or possible leakages). The air separator valve VLA is opened if the fluid level is lower than the bottom level sensor. The fluid level is increased, due to the negative pressure for the degassing range, until the level reaches the upper level sensor of the air separator LA.

2.16.9 Disinfection and Cleaning Program The user can select a disinfection or cleaning program. The position of the couplings are checked by the sensors BICSS, KSS, SBS1 and SBS2. Then the UF pump UFP starts running and builds up a negative pressure against the closed disinfection valve VD. At approx. -200 mmHg VD opens and disinfectant is sucked in by the UFP. The circulation valve VZ is open and fluid flows into the upline tank VB, because the throttle RVDA acts as a forward resistance. Thereby a quicker heat-up in the hot cleaning program is achieved and thus a reduction of disinfectant. There is no flow of fluid to the drain during suction, heat-up and circulation.

MT-MD-DE08C M.KAY




2.17

1 / 200 3

2 - 32

Block Diagram

Fig. : Block Diagram

MT-MD-DE08C M.KAY




1 / 200 3

2 - 33

2.17.1 LegendBlock Diagram Supervisor Board SB Controller Sensoren BICLF BICSS ENDLF KSS NSVB PBE PE

Bicarbonate Rinsing Connection Sensor END Conductivity Concentrate Rinsing Connector Sensor Level Sensor Upline Tank Pressure Sensor Degassing Pressure Sensor

SBS1


SBS2


TSBIC

Bicarbonate Temperature Sensor

TSD

Dialysate Temperature Sensor

TSE

Degassing Temperarture Sensor

Supervisor Sensors ENDLFS TSDS Controller/Supervisor Sensors/Actuators BKUS BL

END Conductivity Supervisor Dialysate Temperature Sensor Supervisor

BottomBicarbonate Sensor Blood Leak Detector

FEDFFS

DF Filter Detection Sensor

FEDHDFS

HD Filter Detection Sensor

LAFS

Air Separator Level Sensors

MSBK1


MSBK2


PA PDA

Arterial Pressure Sensor Pressure Sensor Dialysate Outlet

PSABFS

Port Substition Drain Sensor

PSAUS

Port Substition Outlet Sensor

PV

Venous Pressure Sensor

RDV

Venous Red Detector

SAD

Safety Air Detector

TSHE

Heater Inlet Temperature Sensor

VBE

Filter Vent Valve

VBICP

BIC Pump Valve

VBKS

BIC Concentrate Suction Rod Valve

VBKO

MT-MD-DE08C M.KAY


Top BIC Cartridge Valve

VDFF

DF Filter Valve

VSAA

Substitution Connection Outlet Valve (drain)

VSAE

Substitution Connection Inlet Valve

VSB

Substitution Bypass Valve

VVB

Upline Tank Valve




1 / 200 3

2 - 34

Power Board 1 PB1 BPA EP

Arterial Blood Pump Degassing Pump

FPA

Outlet Flow Pump

FPE

Inlet Flow Pump

Power Board 2 PB2 BICP

Bicarbonate Pump

KP

Concentrate Pump

RVE SAKV-SG UFP

Degassing Control Valve Venous Tubing Clamp Currentles Closed Ultrafiltration Pump

VABK1


VABK2


VB

Upline Tank

VBP

Bypass Valve

VD VDA

Disinfection Valve Dialyser Outlet Valve

VDABK1


VDABK2


VDE

Dialyser Inlet Valve

VDEBK1


VDEBK2


VEBK1


VEBK2


VLA VVBE

Air Separator Valve Upline Tanke Inlet Valve

VZ

Circulation Valve

HP


Heparin Pump Comfort Board SN-Crossover Board BPV

Venous Blood Pump

PBS

Pressure Single Needle

PBS-S

Pressure Single Needle Supervisor

SAKA

Arterial Tubing Clamp

Power Supply H TSH

MT-MD-DE08C M.KAY


Heater Element Thermal Fuse Heater Element



2.18

1 / 200 3

2 - 35

TFT Monitor

2.18.1 Description TFT Monitor TFT Monitor The 15" TFT monitor (TFT=thin filmtransistor) has a resolution of 1024 x 768 XGA. The TFT housing can be swivelled. Keyboard The following settings can be performed via the keyboard: • Start/stop arterial blood pump BPA • Increase/decrease speed of arterial blood pump BPA • Acknowledge alarms • Acknowledge entries Display: +-

Battery Option Keys:

Decrease speed of arterial blood pump BPA Fig. : TFT Monitor witt Touch Screen

stop

+-

Start and stop arterial blood pump BPA

Increasespeed of arterial blood pump BPA

stop

Fig. : Keyboard Membrane

Acknowledgealarms

Acknowledge entries The

start stop

key has two integrated yellow LEDs. In both the

and keys two red LEDs are integrated. All keys switch a resistor on the supervisor communication board to ground GNDD.

Optical Status DisplaysOSD An optical status display OSD is integrated into the TFT housing (top left and right). The red LED is cyclically checked during therapy. The following operating statuses are displayed: Red: Alarm Red Yellow: Warning Yellow Green: Green Trouble-free operation

Touch Screen/Touch Controller Board TCB The touch screen has a resolution of 4096 x 4096 with a 4-wire to technique and has an RS 232 interface (9600 Baud).

Fig. : Rear TFT Monitor

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1 / 200 3

2 - 36

Backlight Inverter Board BIB

The backlight inverter board drives four lamps for the TFT monitor.

Front Panel Board FPB

The front panel board has five keys. If a key is pressed a signal is generated for the TLC and LLS. Three LEDs are integrated in each key. Thus the signals for the TLC are generated. The alarm acknowledge key additionally generates a signal for the LLS. A charge LEDis integrated on the FPB for the battery option. The volume can be set with a potentiometer. A signal is generated for the TLC. The LLS monitors the signal via the current and the pulse. The signals are generated for the TLC and LLS for the optical status displays OSDs. The signals for the brightness of the LEDs (OSD) are generated for the TLC. The signal (brightness for the TFT) for the backlight inverter board BIB is generated for the TLC. The signal for the parallel port is generated for the TLC. The signal for the RS 232 interface is generated for the LLS.

Loudspeaker

MT-MD-DE08C M.KAY


A loudspeaker for audible alarms is either integrated in the basic housing. The volume can be set with a potentiometer on the FPB (TFT housing, rear bottom left).



2.19

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ABPM Option (None-Invasive Blood Pressure Measurement) ABPM Option

A none-invasive blood pressure measurement is possible with the ABPM option (automatic blood pressure measurement). The ABPM option works on an oscillometrical basis for the automatical control of the symptomatic hypertonia during dialysis. The ABPM option can be retrofitted in the dialysis machine.

ABPM Module/ABPM Interface Board Dialog+

The ABPM option consistsof the ABPM module and the ABPM interface board. The ABPM option will be assembled in the basic housing (left side).

VoltageSupply

The ABPM module is connected to the switch mode power supply via the ABPM interface board (connector P8).

Multi I/O

The ABPM module is connected to the motherboard (COM3 port) via the ABPM interface board.

2.19.1 Wiring DiagramABPM Option

ABPM Module ABPM-Modul Floppy Disk Drive Diskettenlaufwerk

left sidebasic housing linke Seite Grundgehäuse

P2

ABPM Interface Board ABPM Interface-Board

P1

Motherboard GX1LCD Switch Mode Power Supply SMPS Schaltnetzteil SMPS

1 COM4 COM2

COM3 1 1 COM1

P8

Fig. : Wiring Diagram ABPM Option

MT-MD-DE08C M.KAY




2.20

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bioLogic RR Option (Automatic Blood Pressure Stabilisation) The bioLogic RR option can be installed and activated subsequently. The ABPM option must be present in the Dialog+to run the bioLogic RR option. The software for the bioLogic RR option is installed via an installation diskette. The diskette is automatically marked (assigned to the machine) during installation and subsequently can only be used for this specific Dialog+ machine. •

Installation diskette for bioLogic RR for SW ≥ 6.20

Note If the TLC software has to be reinstalled or the hard disk drive has to be replaced: Activate the option bioLogic RR, i.e. use the bioLogic RR installation diskette which belongs to the respective machine and activate again the option.

MT-MD-DE08C M.KAY




2.21

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2 - 39

Supervisor Board SB

2.21.1 Supervisor 2.21.1.1 Block DiagramSupervisor

E2PROM

RAM

SpeicherKarte Memory Card

Digitale Eingänge

Daten/Adressbus Data/Address Bus

Digital Inputs Digitale Eingänge Digital Inputs

CPU 80C535

Analoge Eingänge Analog Inputs Digitale Ausgänge Digital Outputs

ACIA DIABUS

Serielle Schnittstelle Serial Interface

TLCB

Serielle Schnittstelle Serial Interface Datenaustausch Controller Data Communication Controller

LLCB

E2PROM Digitale Ausgänge

Seriell Serial

Digital Outputs

Reset Generator Fig. : Block DiagramSupervisor Board

2.21.1.2 Description Supervisor The supervisor board connects the low level controller LLC with the peripheral. Additionally the supervisor (monitoring microprocessor) is integrated on the board. The following components are assembled on the board. The sensors are directly connected: • • • • • • • • • • • • • • •

Bicarbonate Conductivity Measurement END Conductivity Measurement Controller ENDConductivity Measurement Supervisor DegassingTemperature Measurement Bicarbonate Temperature Measurement Dialysate Temperature Measurement Controller Dialysate Temperature Measurement Supervisor Level Sensors Upline Tank Reed Contacts Rinsing Bridge Venous Pressure Sensor Arterial Pressure Sensor Level Sensors in the Air Separator Red Sensors Degassing Pressure Measurement Blood Inlet Pressure Measurement

Additionally the following components are available for monitoring and control: • •

MT-MD-DE08C M.KAY


Monitoring of analogue 12 V supply voltage Synchronisation of actual pump values



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The signal processing for the low level controller and supervisor are on the supervisor board. All sensors are connected to this board via plugs. The power board BP1 and PB2 are also connected to this board. Signals for single sensors of the processor system are also processed separately.

Microprocessor

The supervisor has the following components: •

80C535 CPU

•

E2PROM

Connection for:

80C535 CPU

•

Memory Card

•

Digital Inputs and Outputs

•

Analogue Inputs

•

Serial Interface

•

Communication with the Controller

•

Reset Generator

The supervisor CPU (central processing unit) has the following data: •

8 Bit Processor

•

256 x 8 RAM (internal)

•

6 8 Bit I/O Ports

•

3 16 Bit Counter

•

1 Serial Interface with max. 9600 Baud

•

8 Bit AD Converter with 8 Multiplexer Inputs

Address Decoding Logic

The processor is equipped with a 32 kB external RAM and a 1 MB E2PROM. The programcode is stored in the E2PROM. The RAM is used to store data.

Serial E2PROM

The serial E2PROM stores the supervisor sensor calibration data. The data is stored during calibration in the TSM service program and loaded before a therapyis activated.

Digital Inputs andOutputs

Additional signal memory (latches) for the in- and outputs are available, because the implemented ports of the 535 processor are limited. The outputs haveopen colectors. All inputs have TTL level.

Analogue Inputs

The processor has an internal 8 bit AD converter. The input voltage range is 0 to 5 V. The supervisor monitors the analogue sensors conductivity, temperature and pressure, these are directly connected with the inputs.

Serial Interface

The serial interface is used for the communication with the front panel board FPB (via the SUPBUS). The transfer rate is 9600 baud. The interface works in full duplex mode with V 24 level. An additional ACIA (asynchronous communications interface adapter) is implemented for the communication with the top level controller via the DIABUS. The ACIA works in full duplex mode with 19200 baud and 24 V level.

Communication with the Controller

The communication with the controller is realised by a parallel interface. The interface has signal memory (latches).

Reset Generator

The reset generator resets the processor after the supply voltage is switched on. Thereby the programcan start at a predefind address.

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2.22

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2.22.1 Block DiagramBicarbonate Conductivity Measurement +5 VREF Referenzspannung Reference Voltage

BICLF-A Sendeelektrode Transmitter Electrode

CLK4 Takt 4000 Hz Cycle 4000 Hz

Tiefpaß Low-Pass

Geschalteter Gleichrichter Switch Rectifier

Verstärker Amplifier

BICLF-C Empfangselektrode ReceiverElectrode

BIC-LF Ausgangssignal Output Signal Fig. : Block Diagram Bicarbonate Conductivity Measurement

2.22.2 Description Bicarbonate Conductivity Measurement The conductivity of the dialysate is determined by a resistance measurement. The measurement is performed by an alternating current with approx. 4 kHz. The calibration is accomplished by the controller. The measurement cell has two transmitter electrodes and a receiver electrode with a fixed cell constant. •

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A transmitter voltage for the transmitter electrode BICLF_A signal is generated from the +5 VREF reference voltage by the CLK4 signal (4000 Hz).

•

The signal runs through the fluid.

•

The received BICLF_C signal is amplified.

•

The switched rectifier converts the a.c. voltage to a d.c. voltage BIC_LF.

•

A d.c. voltage, which is proportional to the conductivity is fed to the AD converter.

•

The temperature compensation and linearisation of the conductivity is performed by the controller.



2.23

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2.23.1 Description ENDConductivity Measurement Controller The design of the END conductivity measurement controller is identical with the bicarbonate conductivity measurement in paragraph 2.22.

2.23.2 ENDConductivity Measurement Supervisor 2.23.3 Block DiagramEND Conductivity Measurement Supervisor

Taktgenerator 4000 Hz

Referenzspannung

Pulse Generator 4000 Hz

Reference Voltage ENDLF-S-A Sendeelektrode

Transmitter Electrode

END-S-LF Ausgangssignal Output Signal

Geschalteter Gleichrichter Switch Rectifier


ENDLF-S-C Empfangselektrode Receiver Electrode

Fig. : Block DiagramENDConductivity Measurement Supervisor

2.23.4 Description ENDConductivity Measurement Supervisor The END conductivity measurement of the dialysate by the supervisor is in principle identical with the controller. The differences are: • •

The independent generation of the reference voltage and the clock signal Dimension of the Measurement Cell

The calibration is performed by the supervisor software.

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2.24

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2.24.1 Block DiagramDegassing Temperature Measurement

+5 VREF Referenzspannung Reference Voltage

U/I Wandler U/I Converter

Offset

TSE, TSHE, TSBIC, TSD Ausgangssignal Output Signal

PTC


Tiefpaß Low-Pass

Fig. : Block DiagramDegassing Temperature Measurement

2.24.2

Design Degassing Temperature Measurement The temperature of the fluid is measured by a PTC resistor (PTC positive temperature coefficient). •

The PTC has a constant current flow of <0.1 mA

•

The voltage drop is measured and amplified in a differential amplifier

•

An offset voltage is added to lift the zero point. Thereby the measurement range of the ADconverter has an optimal working condition.

•

The output voltage is fed to the AD converter on the supervisor board via a low-pass filter.

2.24.3 Description Bicarbonate Temperature Measurement The design is identical with the degassing temperature measurement in paragraph2.24.1.

2.24.4 Description Dialysate Controller Temperature Measurement The design is identical with the degassing temperature measurement in paragraph2.24.1.

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2.24.5 Block DiagramDialysate Supervisor Temperature Measurement

ReferenzSpannung Reference Voltage

U/I Wandler

PTC

U/I Converter

Offset


Tiefpaß

TSD-S Ausgangssignal Output Signal

Low-Pass

Fig. : Block Diagram Dialysate Supervisor Temperature Measurement

2.24.6 Description Dialysate Supervisor Temperature Measurement The temperature measurement of the supervisor has an independent reference voltage source. Thus a cross-interference with the temperature sensors of the controller is excluded.

2.25

Level Measurement

2.25.1 Block DiagramLevel Measurement Upline Tank

+5 V

NSVBO NSVBU Fig. : Block Diagram Upline Tank

2.25.2 Description Level Measurement Upline Tank The level sensor in the upline tank has two reed contacts. The contacts are switched by an internal magnet in a float ball. Pull-up resistors are on the input. The query is carried out by the digital inputs of the controller.

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2.26

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Reed Contacts

2.26.1 Block DiagramCoupling Status

+5 V

SBS1 SBS2 KSS BICSS Fig. : Block Diagram Query Reed Contacts

2.26.2 Description CouplingStatus Magnets are integrated in the dialysate couplings und concentrate couplings. If the couplings are connected the reed contacts are switched. The query is performed by the digital inputs of the controller and supervisor. The inputs have pull- up resistors.

2.27

Pressure Measurement

2.27.1 Block DiagramVenousPressure Measurement

+5 VREF

+1,2 VREF

Offsetspannung

+5 V

Offset Voltage

Differenz Verstärker Differential Amplifier

Begrenzer Ausgangssignal PV Limiter ReferenceVoltage

Druckaufnehmer Pressure Sensor Fig. : Block Diagram Venous Pressure Measurement

2.27.2 Description VenousPressure Measurement The pressure sensor has a resistance bridge. The resistance value changes in accordance with the present pressure value. A constant +5 VREF is connected to the bridge.

MT-MD-DE08C M.KAY


•

The measurement signal is tapped and amplified in the differential amplifier.

•

An offset voltage is added to lift the zero point. Thereby the measurement range of the AD converter has an optimal working condition.

•

The voltage is limited to +5 V by a clamp circuit on the output, in the event of a fault condition. A damage of the following circuit components is thereby prevented.



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2.27.3 Block DiagramArterial Pressure Measurement +5 VREF

+2,5 VREF

Offsetspannung Offset Voltage


+5 V

Begrenzer Limiter

Ausgangssignal Reference VoltagePA

Druckaufnehmer Pressure Sensor Fig. : Block Diagram Arterial Pressure Measurement

2.27.4 Description Arterial Pressure Measurement The design of the arterial pressure measurement is identical with the venous pressure measurement in paragraph 2.27.2, with the exception of the offset voltage.

2.28

Blood Inlet Pressure Measurement

2.28.1 Block DiagramBlood Inlet Pressure Measurement

+5 VREF

+1,8 VREF



+5 V

Begrenzer Limiter

Ausgangssignal Reference VoltagePBE

Druckaufnehmer Pressure Sensor Fig. : Block Diagram Blood Inlet Pressure Measurement

2.28.2 Description Blood Inlet Pressure Measurement The design of the blood inlet pressure measurement is identical with the venous pressure measurement in paragraph 2.27.2, with the exception of the offset voltage.

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2.29

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Level Sensors

2.29.1 Block DiagramLevel SensorsAir Separator

Hochpaß High-Pass

Hochpaß

LAFSO-EL

Gleichrichter Rectifier

Tiefpaß Low-Pass

Komparator Comparator

LAFSO

LAFSU-EL

Gleichrichter Rectifier

Tiefpaß Low-Pass


LAFSU

Oszillator Oscillator High-Pass

Fig. : Block Diagram Level Sensors

2.29.2 Description Level Sensors Air Separator The query of the fluid level in the air separator behind the balance chamber is accomplished by the conductivity of the dialysate. •

The oscillator generates an a.c. voltage with a frequnecy of approx. 8 kHz.

•

The d.c. voltage part is removed by a high-pass.

•

The output voltage is fed to the electrode.

•

2.30

If the electrode immerses into the fluid due to an increase of the fluid level, the voltage at the electrode is decreased.

•

The voltage is rectified for evaluation and smothed by a low-pass

•

This d.c. voltage is compared with a reference voltage by a comparator.

Red Detector

2.30.1 Block DiagramRed Detector

LEDAnsteuerung

CLK4

Grün Green

LEDDrive

RDV

Ausgangssignal Output Signal

Tiefpaß Low-Pass

Verstärker

Empfänger Receiver

Amplifier

Fig. : Block DiagramRed Detector

2.30.2 Description Red Detector The red detector works as a light barrier with a triggered 4 kHz green light. •

The received signal fromthe photo transistor is amplified.

•

The signal is only evaluated, if the green LED is also driven.

•

External interferences are thereby prevented.

The venous red detector RDV has an additional preamplifier.

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2.31

Degassing Pressure Measurement and Dialysate Pressure Measurement

2.31.1

Block DiagramPressure Measurement +5 VREF

+2.5 VREF



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+5 V

Begrenzer Limiter

Ausgangssignal Reference VoltagePE/PDA

Druckaufnehmer Pressure Sensor Fig. : Block Diagram Pressure Measurement

2.31.2

Description Pressure Measurement The respective pressure sensor has a resistance bridge. The resistance value changes in accordance with the present pressure value. A constant +5 VREF is connected to the bridge.

2.32

•

The measurement signal is tapped and amplified in the differential amplifier.

•

An offset voltage is added to lift the zero point. Thereby the measurement range of the AD converter has an optimal working condition.

•

The voltage is limited to +5 V by a clamp circuit on the output, in the event of a fault condition. Thereby a damage of the following circuit components is prevented.

Monitoring Analogue 12 V VoltageSupply

2.32.1 Block DiagramMonitoring of Analogue 12 V VoltageSupply

+12 VAN

Überwachung

P12ANOK

Monitoring -12 VAN

M12ANOK

Fig. : Block Diagram Analogue 12 V Voltage Supply

2.32.2 Description Monitoring Analogue 12 V VoltageSupply The analogue +12 VAN and -12 VAN supply voltages are monitored by two voltage monitoring components against deviation. The components have an internal reference voltage source. Thereby the connected voltage can be constantly monitored. The P12ANOK and M12ANOK signal are switched at the output, if the voltage is lower than 10.8 V.

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2.33

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Safety Air Detector SAD and Venous Red Detector RDV

2.33.1 Block DiagramSAD/RDV

Fig.: Block Diagram Safety Air Detector SAD/RDV

2.33.2 General Information SAD Decrementation of Detected Air Volume

Flow Dependent AlarmLimits

If an alarm was not previously activated, the detected and added air volume from both the LLC and LLS systemis decremented with a rate of 1 µl s-1 Thus air bubbles which may have gathered in the venous bubble catcher and are accumulated in larger time intervals, do not automatically lead to an alarm, because the detected air volume is continuously subtracted by 1 µl s-1. The alarmlimits for the air alarmdepend upon the flow through the detector: • • •

50 ..... 200 ml min-1 blood flow =0.2 ml 200 ... 400 ml min-1 blood flow =0.3 ml 400 ... 850 ml min-1 blood flow =0.5 ml

Example -1 • set blood flow =250 ml min • no substitution -1 − Flow through the sensor =270 ml min : -1 -1 (270 ml min =250 ml min set blood flow +20 ml min-1 additional flow possible by external infusion devices, e.g. HDF − Alarm limit value =0.3 ml air

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Event Chart

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Example 200 ... 400 ml min-1 blood flow =0.3 ml: • • •

at t =0 an air bubble with 0.2 ml is detected after t =3 min a second air bubble with 0.2 ml is detected after time t =4 min a third air bubble with 0.2 ml is detected

Ergebnis: t [min]

Detected Air Volumein Software Counter [ml]

AlarmLimit Value [ml}

SADAlarm yes/ no

-1 0 1 2 3 4 6

0 0 +0,2 air 0,14 0,08 0,02 +0,2 air 0,16 +0,2 air 0 after acknowledgement

0,3 0,3 0,3 0,3 0,3 0,3 0,3

no no no no no yes no

After t = 3 min a second air bubble with 0.2 ml is detected. An alarm is not activated, because the first detected air volume is decremented with a rate of 1 µl s-1, during t =3 min =180 s (i.e. 0.18 ml). After t =4 min an SAD alarm is activated, because the limit of 0.3 ml is exceeded..

2.33.3 Description Safety Air Detector SAD Principles of Air Monitoring

The monitoring of air is performed by ultrasonic transmitting between two piezo elements. The piezo elements work as trasmitter and receiver. The transmitter piezo element transmits pulses. These pulses are transmitted through the tubing, which is filled with blood (air), to the receiver piezo element. The filled tubing is the transmitting path. If the tubing is filled with blood the transmitting signal is only slightly attenuated (so-called coupling resistance). If the tubing is filled with air the transmitting signal is attenuated very strongly. The received amplitude is evaluated. Thus the condition (attenuation) of the transmitting path can be derived. This received amplitude is compared with an alarmthreshold: •

Blood in tubing (no attenuation): Amplitude of receiver signal >alarm threshold.

•

Air in tubing (large attenuation): Amplitude of receiver signal
If air is in the tubing the alarm threshold is not reached and the SAD indicates air in system.

SAD Function

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The ultrasonic transmitting pulse is triggered cyclically. The transmitting pulse is variably attenuated, depending on the air concentration in the tubing. The received voltage amplitude is compared with an alarm threshold. If the voltage drops below the alarm threshold the SAD and SAD_S signals of the flip-flops are set. The SAD signal is checked cyclically by the low level controller LLC and then reset by the SADRESET signal. Simultaneously the low level supervisor LLS checks cyclically the SAD_S signal and is then reset by the SADRESET_S signal. The LLC checks cyclically the function of the SAD during operation by switching from the alarm threshold to the test threshold. LLC and LLS expect an air signal after the activation of the test threshold. An air signal is present at the flip-flop SAD_S, due to the cyclic test, until the SADRESET_S signal resets the air signal. The LLS monitors cyclically if at least air was detected once in 1.5 s. If air was not detected an SAD alarm is activated.



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SADCalibration

The test threshold and alarm threshold for the SAD are calibrated in the TSM service program. In dialysis the test threshold is cyclically checked to guarantee that the sensitivity of the SAD has not been reduced compared to calibration. Thus a reduction of sensitivity is detected caused by operation and ageing. The alarm threshold is cyclically measured (250 ms) by the LLS during therapy and compared with the fixed alarm threshold. The calibration threshold is the maximum sensitivity which can be reached. An individual calibration value is set in the TSM service programfor the calibration ex works.

Control Logic

In the control logic the signals are linked for programming the shift register and to generate the process control for the SAD. Additionally the transmitter pulses are triggered and the receiver window is closed or opened.

Divider and Oscillator 3.6864 MHz

A quartz oscillator with a divider generates the necessary clock signals.

Transmitter

The tramsmitter piezo element oscillates via an induction voltage (piezo effect) and transmits ultrasonic waves.

Receiver

The transmitted pulses from the transmitter are converted into a voltage in the receiver piezo element (piezo effect). The receiver voltage is fed to the comparator input.

Programming of Shift Registers 1 and2

The shift registers are selected by the SADSEL signal to enable dataloading. The USDI signal is loaded into the shift register by the clock pulse signal USCLK. The outputs of the shift registers are fed to the low-passes.

Shift Register 1 andLow-Pass1 (AlarmThreshold)

The output of the shift register 1 controls the control input of the multiplexer. A pulse width modulated voltage PWM is present at the output of the shift register 1. The low-pass 1 smooths the voltage which is fed to the multiplexer. This voltage is the alarmthreshold for the comparator.

Shift Register 2 andLow-Pass2 (Test Threshold)

The output of the shift register 2 controls the control input of the multiplexer. A pulse width modulated voltage PWM is present at the output of the shift register 2. The low-pass 2 smooths the voltage which is fed to the multiplexer. This voltage is fed to the comparator, during the cyclic SAD test.

Comparator

The comparator compares the receiver voltage with the alarm threshold. The receiver voltage is smaller than the alarm threshold if the transmitter signal is attenuated, due to air in the tubing. Together with the function of the receiver window the output signal of the comparator (to the flip-flop) becomes logic 1. The receiver signal is larger than the alarm threshold if blood is in the tubing. The output signal of the comparator (to the flip-flop) becomes logic 0.

SADSignal for LLC

The SD signal is fed to the flip-flop and sent to the LLC as SAD signal. The SAD signal is checked cyclically by the LLC. The LLC resets the flip-flop via the SADRESET signal. If air is detected at any time during a cycle the SAD output changes to logic 0. Thereby the LLC evaluates the complete last cycle as air.

SAD_S Signal for LLS

The SD signal is fed to the flip-flop and sent to the LLS as SAD_S signal. The SAD_S signal is checked cyclically bythe LLS. The LLS resets the flip-flop via the SADRESET_S signal. If air is detected at any time during a cycle the SAD_S output changes to logic 0. Thereby the LLS evluates the complete last cycle as air.

Test SAD and SAD_S

The voltage of the low-pass 2 is switched cyclically to the comparator output by the USTEST signal. Thus the comparator, the coupling and the dynamic of the circuit is checked. The alarm threshold and the test threshold (voltage of low-pass 2) is switched by the multiplexer.

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SADREF Signal

The amplifier is a differential amplifier with follow-up impedance. The difference between the voltage at the comparator input and the voltage at the voltage divider is amplified. LLS ckecks cycliccally (250 ms) the alarm threshold with the calibrated alarm threshold during therapy. If the value is out of limits a reference alarmis activated.

TIMECONTRSignal

The quartz oscillator monitors the SAD sampling frequency. If the control logic and quartz oscillator work correctly the divider is reset by the SADX signal. The counter output becomes logic 1 if the SADX signal is not present or the time between two reset pulses is too long. Thereby a drop below the SAD sampling frequencyis reported to the LLS. The TIMECONTR signal becomes logic 1 and inhibits the CLK input of the counter. Thereby an overflow of the counter and a removal of the TIMECONTR alarmis prevented. Furthermore the SADRESET signal of the LLC is monitored. If the SADRESET signal becomes logic 0, due to an error, the SADX signal cannot reset the counter. This leads to a TIMECONTR alarm.

2.33.4 Description Venous Red Detector RDV Assignment and Function RedDetector

The venous red detector RDV detects blood with a certain concentration. The RDV assists the user during the connection of the venous line to the patient and after therapy during disconnection with sodium chloride bags. The amplified RDV signal is processed on the supervisor board and sent to the TLC via the DIABUS.

Principle of Venous RedDetector RDV

The RDV consistsof a transmitter (green LED) and a receiver (phototransistor). A tubing is between transmitter and receiver. Blood, colourless turbid fluid or air can be in the tubing. The RDV generates a signal to detect red fluid or colourless fluid. The function principle of the RDV is based on the fact that blood absorbes all colours with the exception of red. The green light is attenuated if blood enters the RDV. Blood or colourless fluid can be distinguished with the phototransistor and the comparator.

RDV Signal

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The receiver signal of the phototransistor is amplified. The RDV signal is fed to the supervisor board SB for further signal processing. The signal is fed to the low level controller LLC which provides the signal to the top level controller TLC.



2.34

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Blood Leak Detector

2.34.1 Block DiagramBlood Leak Detector

BLRG

Auswahl rote oder grüne LED Selection red or green LED

Pulsweitensignal BLPWM Pulse-Width Signal

LEDAnsteuerung LED Drive

Ausgangssignal BLREC Output Signal

Tiefpaß Low-Pass

Rot Red

Grün Green


Fig. : Block DiagramBlood Leak Detector

2.34.2 Description Blood Leak Detector The drive and evaluation circuit is mounted on the sensor head. The amplified signal of the receiver is fed to the supervisor board. The blood leak detector works with red and green light. The transmitter LEDs are mounted opposite to the receiver diodes (transmitted light). The drive and evaluation is carried out by the controller. The actual value is also fed to the supervisor.

MT-MD-DE08C M.KAY

Drive Principle

The drive of the LEDs is performed alternately by the BLPWM signal. The red LEDis used to level any turbidity.

Calibration

For calibration the red and green LED are driven by the BLRG signal, until both have identical output voltage. If a turbidity occurs, both drive signals are increased. If the dialysate is stained by blood only the green LED signal is attenuated. Theoutput signal is reduced and blood is thereby detected.




2.35

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Controller Board CB

2.35.1 Block DiagramController Board

3

EEPROM

RTC A/D

MFP

n

o i ß t u a l n h i c s m r b e a T s u s B u

+5 VG P / REM 2 P

MUX

B n o i ß t u l a n h i c s m r b e a T s u s u B B

50 MHz

/2 K L C U P C

s u B a t a D t i B 6 1

K L C U P C

SCC

CIO

/ 1 P 16 Analoge Leitungen (P1) g u l 16 Analog Lines(P1) P l a 8 Leitungen (P3) n 8 Lines(P3) g i S 3 P / 2 P / 1 P r e k c e t s l a n g i 20 Leitungen/Baustein (P2) S 20 Lines/Component (P2)

s l e l a a n n g i g i S s l r e o r u t e t n o S C

Steuerlogik Control Logic

Puffer Buffer

RAM 512 K

CPU

Flash 521 K n

r r e e f f f f u u B P

24 Bit Address Bus

o i ß t u l a n h i c s m r b e a T s u s u B B n

32 Bit Data Bus

o i ß t u l a n h i c s m r b e a T s u s B u B

Erweiterungsstecker P4 Extension Plug P4

Fig. : Block Diagram Controller Board CB

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2.35.2 Description Controller Board Microprocessor

CPU

The low level controller board has the following components: •

CPU

•

Clock Generator

•

Control Logic

•

Memory (RAM/Flash EPROM)

•

Counter/Timer and Parallel I/O Ports CIO

•

Serial Communication SCC SCC

•

AD Converter AD

•

Multiplexer MUX

•

System Clock Generation MFP

•

E2PROM

•

Real Time Clock RT RTC C

•

Extension Connection, i.e. for Second Microprocessor

The 68020 CPU (central processing unit) has the following data: •

32 Bit Processor

•

16 MB Address Range

•

32 Bit Data Bus (external)

•

24 Bit Address Bus

The 32 bit data bus is connected unbuffered to all memories and is shielded against the remaining peripheral by drive components. The data bus is terminated by special terminator components. Thereby the signals are terminated and in case of a tristate condition the last level is held. The 24 bit address bus is buffered by drive components and is terminated by diodes, to prevent reflections. All control and clock lines that are connected to several consumers are terminated by RC elements.

Clock Generation

The clock generation for the microprocessor and control logic is generated from a 50 MHz oscillator. A D flip-flop generates two opposite phase clock signals of 25 MHz. Thereby the necessary phase accuracy and rise times for the microprocessor is achieved. For peripheral components a 4 MHz and a 2 MHz are generated by a second 8 MHz oscillator. All clock lines are terminated.

Control Logic

The control logic is responsible for decoding and access control. All signals required for decoding are unbuffered and come directly from the CPU and from an other microprocessor. The access control implements wait cycles depending on the addressed component.

Memory (RAM/Flash EPROM)

The memory has four flash EPROMs and four static RAMs. The memories are connected parallel to the data bus. Both memory work with a 32 bit data bus.

Counter/Timer and Parallel I/O Ports (CIO)

Eight parallel ports are available as CIO components (counter/timer/parallel inputs and outputs). The CIO components have the following parts: •

two 8 Bit Ports

•

one 4 Bit Port

•

three 16 Bit Timers

The ports can be operated in different modes.

Serial Communication (SCC)

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A SCC component (serial communication controller) is available for serial communication. The two channel controller can handle asynchronous and synchronous protocols.



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AD Converter AD

The analogue signals in the range of 0 to 5 V are converted by a 2 MHz triggered AD converter. A 16 channel multiplexer MUX is connected prior to the AD converter. All 12 bits are transmitted simultaneously to the DIABUS by a read command.

Multiplexer MUX

The inputs of the multiplexer are connected to the signal plug P2. The input voltage range is 0 to 5 V. The inputs are protected against over voltages of ±20 V.

SystemClock Pulse Generator MFP

A multi function peripheral component MFP is available for the internal system clock generation. The MFP has the following parts: •

three 8 bit timers

•

one serial channel

•

eight in/out ports

A timer is pulsed with 3.68 MHz for the baud rate of the serial channels. Two timers are in series with the time basis of the software operating system. The serial interface is reserved for debugging information. The real time clock RTC and the serial E2PROM are connected to the port pins.

E2PROM

MT-MD-DE08C M.KAY

Specific parameters of the boards are stored in the serial E2PROM.

Real TimeClock RTC

The alarm output of the real time clock RTC is directly connected to plug P3. The mains power supply can thereby be switched on automatically. The voltage supply is buffered by +5 VG in the mains power supply.

Extension Port

The available extension port is related to the signals parallel to the microprocessor. A second microprocessor could have access to the board via this port.




2.36

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Power Board 1 PB1

2.36.1 Block DiagramPower Board 1

EC-Motor Ansteuerung EC Motor Drive

Sollwert

Set Value

UND-Glied AND Element

MotorRegler Motor Controller

Tiefpaß Low-Pass


Stop

Istwert Actual Value

BPADS

Treiber Drive



Meßwiderstand

EC-Motor EC Motor

PGND

Measurement Resistor

Tiefpaß Low-Pass NICHT-Glied NOT Element nur BPA only BPA NICHT-Glied NOT Element

NICHT-Glied NOT Element Komparator Comparator

BPAIMP

MotorAdapter Motor Adapter

Hallsensoren

Hall Sensors

PumpenklappenSchalter Pump Cover Switch GabellichtSchranke Light Barrier

Fig. : Block DiagramPower Board 1

2.36.2 Description Power Board 1 Drive Circuit for Pumps

The following drive circuits for the d.c. motors are on power board 1: •

Arterial Blood Pump BPA

•

Degassing Pump EP EP

•

Outlet Flow PumpFPA

•

Inlet Flow Pump FPE

The drives are controlled by the controller board via the supervisor board. The output signals are evaluated by the supervisor and controller board.

EC Motor with Hall Sensors

The electronic commutator d.c. motor has three hall sensors. The position of the magnetic rotors are detected with the hall sensors. The three phase motionless coils are fed with current according to the position of the rotors. The motor adapter detects the revolution. The speed dependent output signal is pulse width modulated. The sensitive degree and frequency are speed proportional. The signal is fed to the motor controller via a passive and active low-pass filter.

Asynchronous Actual Speed BPAIST_US Signal of Arterial Blood Pump

The BPAIST_US signal is generated by a NOT element from the speed dependent output signal of the motor adapter.

Stop BPASTOP Signal of Arterial Blood Pump

The EC motor can be stopped by the BPASTOP signal or by opening the pump cover. If the BPASTOP signal has logic 1, the EC motor is stopped.

Cover Switch BPADS Signal of Arterial Blood Pump

A permanent magnet is integrated in the pump cover. If the pump cover is closed a reed contact is closed. This signal is linked with the BPASTOP signal after a comparator and fed to the motor controller. If the pump cover is opened the motor is switched off.

MT-MD-DE08C M.KAY




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BPAIMP Signal of Arterial Blood Pump

The supervisor monitors the rotation of the arterial blood pump BPA via a slot disc. Theslot disc runs in a fork light barrier. The post comparator generates the BPAIMP signal.

BPA Signal of Arterial Blood Pump

The set-point value for the speed of the EC motor is available as a pulse width modulated (PWM) BPA signal. The BPA signal is converted to an analogue voltage by a low-pass filter and fed to the motor.

Current Limitation of EC Motor

A voltage which is proportional to a coil of the EC motor is present at a measurement resistance. A comparator compares this voltage with a reference voltage. The reference voltage is equivalent with the maxium motor current. The voltage of the measurement resistance is fed to a comparator via a lowpass filter. The low-pass filter prior to the comparator prevents an activation of the current limitation during short period load peaks of the EC motor.

Signals Input Signals

Description

BPA

Set-point value for motor speed of arterial blood pump

PWM signal

FPE

Set-point value for motor speed of inlet flow pump

PWM signal

FPA

Set-point value for motor speed of outlet flow pump

PWM signal

EP

Set-point value for motor speed of degassing pump

PWM signal

PUMP STOP Start/stop signal

MT-MD-DE08C M.KAY


Signal Type

Logic 1=Stop

HS1

Hall sensor signal (integrated in motor)

-

HS2


-

HS3


-

Output Signals

Description

-IST

Proportional frequency signal for motor speed

-

BPADS

Pump cover position of arterial blood pump (BPA)

Logic 1=cover closed

BPAIMP

Processed signal of forklight barrier

-

L1

Coil control

-

L2

Coil control

-

L3

Coil control

-

Signal Type



2.37

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Power Board 2 PB2

2.37.1 Block DiagramPower Board 2

2-Wege-Ventile 2 Way Valve Ventil Valve

NICHT-Glied NOT Element


VS




Vref Meßwiderstand Measurement Resistor

Regelventil Entgasung (RVE) Degassing Control Valve (RVE) NICHT-Glied NOT Element

Strombegrenzung Current Limiter Komparator Comparator



VS


Strombegrenzung Current Limiter


Treiber Drive

PGND Ventil Valve


Ventil-Vorlaufbehälter-Eingang VVBE (2-Wege-Ventil) Upline Tank Inlet Valve VVBE (2 Way Valve) VVBE

Ventil Valve


RVE

Treiber Drive


Treiber Drive

PGND

Ventil Valve



Venöse Schlauchabsperrklemme Venous Tubing Clamp SAKV


Treiber Drive

SAKV_S


Treiber Drive

PGND

Ventil Valve

Schrittmotor KP/BICP/UFP Stepper Motor KP/BICP/UFP F-schritt Isel


GAL



Meßwiderstand /Measurement Resistor Meßwiderstand /Measurement Resistor

Motor PGND PGND

Fig. : Block DiagramPower Board 2

MT-MD-DE08C M.KAY




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2.37.2 Description Power Board 2 Circuit Power Board 2 Drives

Drive circuits are on the power board 2 for the following actuators: •

15 2 way solenoid valves

•

one proportional control valve

•

one tubing clamp

•

threebipolar stepper motors

The 2 way valves are used e.g.: •

To control the inlet/outlet of the balance chambers

•

To switch the dialysateflow between main and by-pass

The proportional valve controls the degassing pressure The stepper motors are used for: •

Concentrate pump

•

Ultrafiltration pump

The drives are controlled by logic signals from the supervisor and controller board.

Driver 2 Way Valve

Each valve has a current limitation (mono-flop) integrated in the driver. The current limitation can be activated/deactivated by the VS signal. The valve current is determined indirectly via a voltage drop over a measurement resistor. The measurement resistor is in series with the valve coils. The voltage is compared with a reference voltageat a comparator. If the valve current reaches a limit value the output signal of the comparator switches and triggers a mono-flop. The current is cut-off for a short time, thus preventing an over load of the valves.

Driver 2 Way Valve VVBE

The driver for the upline tank inlet valve VVBE has an additional watchdog. The watchdog is triggered by a negative edge pulse of the VS signal. If the signal is not switched the valve closes after approx. 1.5 s. Thus an over flow of the upline tank is prevented.

Driver Proportional Valve

The proportional valve is driven by a pulse width signal. The current in the valve coil is controlled. The design of the current limitation is identical with the 2 way valve.

Driver Tubing Clamp

The SAKV and SAKVS signals for the tubing clamp are fed to switch transistors via an inverter. The switch transistors can close the clamp independently.

Driver Stepper Motor

The drive for the stepper motor has a GAL (generic array logic) and an integrated motor controller. The GAL generates the logic signals for the motor controller fromthe frequency signal of the stepper motor and the control signal of the coil current. The motor controller has an internal phase current limiter. The motor coil is thereby constant.

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Signals Input Signals


Signal Types

SAKV

Switch signal for tubing clamp (controller)

Logic 1=Clamp open

SAKVS

Switch signal for tubing clamp (supervisor)

Logic 1=Clamp open

VB1

Switch signal for 2 way valve

Logic 1=Valve closed

VB2



VB3



VLA



DV



DV1



VE1



VE2



VA1



VA2



VDE1



VDE2



VDA1



VDA2



Current limitation for 2 way valve

Logic 1=Valve current not limited

RVVB

Control proportional valve

PWM signal

RVE

Control proportional valve

PWM signal

BICP

Control Stepper motor

Frequency signal

KP


Frequency signal

UFP


Frequency signal

IBICP

Control stepper motor

Logic 1=large Coil current

IKP



IUFP



VS

MT-MD-DE08C M.KAY

Description

Output Signals

Description

Signal Type

ventil-IST

Actual value switch condition of 2 way valve


schrittPOS

Reed contact signal on the axis of the stepper motor

-

-Q11

Connection for stepper motor coil

-

-Q12


-

-Q21


-

-Q22


-

ventil-

Connection for valves

-



2.38

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2.38.1 Block DiagramHeparin Pump Compact

+24 VGB HP HPMORI HPISEL HPHALT DREHS FORMS

SchrittMotor Stepper Motor


GAL

HPIST HPR HPKRALO Lichtschranke Kolbenplatte Light Barrier Piston Panel

KOLBS

HPKOLB

Fig. : Block Diagram Heparin PumpCompact

2.38.2 Description Heparin Pump Compact Stepper Motor

The stepper motor is controlled by a motor controller and a GAL (generic array logic). The logic signals for the motor controller are generated from: •

Direction of rotation HPMORI signal

•

Step frequency HP signal

•

Coil current HPHALTand HPISEL signal

The stepper motor works in a half step mode. An internal phase current limiter of the motor controller is kept constant depending of the sensor resistors. The current of the stepper motor can be set by the HPISEL and HPHALT inputs. The internal stop signal of the motor is linked with the following signals: •

Positive locking signal FORMS

•

Direction of rotation signal HPR

•

Stop signal HPHALT

The motor control is switched off if HPHALT is active or the positive locking is opened and the direction of rotation is set to closing.

Speed Recognition

After processing the DREHS signal with a schmitt-trigger (signal of the light barrier for detection of rotation) it is fed to a GAL. The level is only transferred with a pulse from HP. Thus mechanical vibrations of the slot disc are filtered, and the output signal is HPIST.

Plunger Plate, PositiveLocking

The plunger plate signal KOLBS and the positive locking signal FORMS for the light barrier signals are processed with a schmitt-trigger and are available as output signals HPKOLB and HPKRALO.

Syringe Sizes

MT-MD-DE08C M.KAY


Syringe sizes of 10, 20 and 30 ml can be used in the heparin pump Compact.



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Signals Signal HP

Set-point frequency for stepper motor

HPR

Direction of rotation via slot disc of stepper motor Setting of the phase current for the stepper motor driver

HPHALT

HPIST HPKRALO

MT-MD-DE08C M.KAY


Description

Signal of the light barrier at motor Status of claw

HPKOLB

Status of plunger plate

HPMORI

Direction of rotation of stepper motor

HPISEL

Setting of the phase current for the stepper motor driver

Signal Type Step is performed at falling edge Logic 1=Drive running Logic 1=Stop=Phase current stepper motor =0 (INH of TCA3727) Updated only with HP pulse Logic 1=Positive locking is open Logic 1 =Plunger plate ist pressed Logic 1 =Drive opening Logic 0=100% current Logic 1=66% current



2.39

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Single Needle Cross Over

2.39.1 Block DiagramSN Cross Over

+24 VGB

BPV


UND-Glied PWM Tiefpaß Low-Pass AND Element UND-Glied AND Element

BPVSTOP

Endstufe End Stage Meßwiderstand

Komparator mit Tiefpaß Comparator with Low-Pass


Tiefpaß Low-Pass

GNDL

Measurement Resistor

V ref MotorAdapter Motor Adapter

PWM

Tiefpaß (passiv)

Low-Pass (passive)


BPVIST-US Komparator Comparator

Pumpenklappenschalter mit Reedkontakt Pump Cover Switch with ReedContact


BPVDS

EC-Motor EC Motor Hallsensoren Hall Sensors

Schlitzscheibe Slot Disk


BPVIMP

Offsetspannung

+5 VREF

+5 V

Offset Voltage


Begrenzer Limiter

Druckaufnehmer Pressure Sensor

PBS Offsetspannung

+5 VREF

+5 V

Offset Voltage


Begrenzer Limiter

Druckaufnehmer PressureSensor

PBS_S

+12 VAN 5 V Referenzdiode 5 V Referance Diode

Impedanzwandler Impedance Converter

+5 Vref

+24 V Arterielle SchlauchAbsperrklemme Arterial Tubing Clamp

SAKA

FET-LeistungsSchalter FETPower Switch

Fig. : Block Diagram SN Cross Over

MT-MD-DE08C M.KAY




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2.39.2 2.39.2 Description SN Cro Cross Over EC Motor with with Hall Sensors

Th The electro tronic commutator tor d.c. motor tor has thr three hall sensors. The positio ition n of the the magnetic rotors rotors are detected wit with the hall hall sensors. The three phase motionl oti onles ess coils are fed with current according to the position of the rotors. The motor adapter detects the the revolut olutiion. The speed dependent output signal signal is is pulse width width modulated. The sensitive tive degree and freque frequency are speed proporti proportional. The sign ignal is fed to the the motor contro trolle ller via a passive and activ tive low low-pa -pass filt filte er.

Stop BPVSTOPSignal Signal of Venous Blood Blood Pump

The EC motor tor can be stop topped by the the BPVSTOP sign ignal or or by opening ing the the pump cover. If If the BPVSTOP signal has logic logic 1, the EC motor is stopped.

Cover Switch BPVDS Signal Signal of Venous Blood Blood Pump

A permanent magnet is is integrated integrated in the the pump cover. If If the pump cover is is close closed a reed contact is closed. This his signal is is linked linked with with the the BPVSTOP signal after after a comparator and fed to the motor control controlller. If If the the pump cover is opened the motor is switched off.

BPVIMP VIMP Signal of VenousBlood Blood Pump

The superviso isor monito itors the the rotatio tion of th the venous bloo lood pump BPV via a slot lot disc. Theslot disc runs in in a fork fork li light barrier. barrier. The post post comparator parator generates the BPVIMP signal.

BPV Signal Signal of VenousBlood Blood Pump

The set-po t-point int value lue for for the the speed of th the EC motor tor is available as a pulse lse width idth modulated odulated (PWM) BPV signal. signal. The BPV signal is converted rted to an analogue voltage by by a low-pa low-pass ss fil filter and fed to the the motor.

Current Limitati Limitation of EC Motor

A voltage which is proportional to a coil of the EC motor is present at a measurement resist resistance ance. A comparator compares this this voltage voltage with with a reference voltage voltage. The reference reference voltage voltage is equiva quivalent wit with the maxium motor current. current. The volta ltage of the the measurement re resista istance is fed to a comparator tor via a low lowpass pass filter. The The low-pa low-pass ss filter prior prior to the the comparator parator prevents prevents an activa activation tion of the current limitation during short period load peaks of the EC motor.

PBS andPBSSSignal Signals s of Singl Single e Needle dle Pressure Sensors

Each pressure sensor has a resistance resistance bridge bridge. The resistance resistance value changes in in accordance wit with the the present pressure val value. A constant +5 VREF is is connected to the bridge. •

SAKA Signal of Arterial Arterial Tubing Clamp



The measurement sign ignal is tapped and amplifie lified in the the diffe ifferentia tial amplifi lifie er

•

An off offset voltage voltage is added to li lift the the zero point. point. Thereby the measurement range of the the AD converter rter has an optim timal working working condit condition.

•

The volta ltage is limite ited to +5 V by a clam lamp circ ircuit on the the output, in the the event of a fault fault condi condition. tion. Thereby a damage age of the the foll following circuit circuit components is prevented.

The arterial ial tub tubing ing clam lamp is activ tivated by the the SAKA sign ignal via a FET tra transisto istor.



2.40

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2 - 66

Staff Call (O (Optio tion)

2.40.1 2.40.1 Block lock DiagramStaff taff Call

PERSR

>1

PERSR- S PERSR-HU SR-HUP

P5 BR STAT BR: Soldering ringBridg Bridge Lötbrücke

P6 BR

1 sec

DYN

Voltage Monitoring Spannungsüberwachung

>1

1 sec

5

P7 BR DYNAUS

1

K1

3

Fig. : Block Diagram Staff Call

2.40 2.40.2 .2 Descrip criptio tion n Staff taff Call Operati rating Modes

The operatin ting modes static tic with ithout OFF alar larm, dynamic with ithout OFF alarm or dynamic with OFF alarm are set with soldering bridges on the staff call board. The defau fault settin tting g ex works is static tic with ithout OFF alar larm.

P5BR:

static without OFF alarm (default)

P6BR:

dynamic without without OFF alarm

P7BR:

dynamic wit with OFF alarm

Static without Off Alarm

The relay lay K1 switc itches as lon long as one of th the thr three inp inputs PERSR-S, -S, PERSR-HU -HUP or PERSR are acti active ve.

Dynamic withou without Off Alarm

If at lea least one input input PERSR-S, R-S, PERSR-HUP SR-HUP or PERSR PERSR changes from from active ctive to inactive nactive the relay relay K1 is switched switched for 1 second. The mono-f ono-flop U1 generates a switch switch tim time of one second.

Dynamic with Off Off Alarm

If at lea least one input input PERSR-S, R-S, PERSR-HUP SR-HUP or PERSR PERSR changes from from active ctive to inacti nactive ve the relay K1 is swit switche ched d for 1 second second or if the +12 + 12 VD VD voltag oltage e drops more than 10 %. The mono-f ono-flop U1 generates a switch switch ti time of one second. The supply supply vol voltage for the staff call circuit circuit is decoupl coupled by the diode V1 from the +5 V volt voltage and buffered buffered by a 1 F capacit capacitor C1.





1 / 200 3

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2.40.3 2.40.3 Operating Mod Modes Staff Call System tem

/ AQ key to reset the alarm in the Press the operati operating mode static static without OFF alarm.

Unit ON/G N/Gerät EIN EIN Alarm

static

without OFF alarm larm ohneAUS-Alarm AUS-Alarm

dynamic

without OFF alarm larm ohneAUS-Alarm AUS-Alarm

dynamic with OFF alarm mit AUS-Alarm AUS-Alarm

Alarm Operation Betrieb

1s


1s


1s

Fig. : Operating Modes Staff Call System

Signals: PERSR- S

Staff call input of low level supervisor LLS

PERSR

Staff call input of low level controller LLC Staff call input of power supply

PERSR-HUP SR-HUP

(This li line is also acti active ve if the mains power suppl supply buzzer is is switched on or iif f there is is no WDlevel change in 0.7 s.)

2.40.4 2.40.4 Block DiagramAlarm AlarmMonitor itoring Legend:

Top Level Controll Controller TLC A- S

PERSR-T

WD

A

AKAL

PERSR-S R-S

A-S A-S:

LLS alarms (by data transm transmission)

AKAL:

LLC audible alarm

AKAL-S: AL-S:

LLS audible audible alarm alarm

transmiss ission ion) PERSR-T: SR-T: TLC staff call (by data tra

Low Level Controller LLC

Low Level Supervisor LLS AKAL-S L-S

transmission) A: LLC alarms (by data transm

PERSR

PERSR:

LLC staff call (hardware (hardware))

PERSR- S:

LLS staff call (hardware (hardware)

Voltage suppl upply staff call (hardware) are) PERSR-HUP: Vol PERSR

Power Supply PS

PERSRHUP

WD:

Staff Call Board PR

LLS watchdog connection connection (hardware)

Fig. : Block Diagram Alarm Monitoring Staff Call

2.40.5 2.40.5 Pin Assign ignment

5 green/grün

5 1

1

1brown/braun

AlarmTa Alarm Table:

3

3 white/weiß

TopView View Draufsicht

Cable Kabel

3 Medical Device medizin. zin. Gerät

5

The pin assign ignment is shown in the the fig figure.

Alarm Operation

Connector

Cable

1- 3 3- 5

white-brown white-green

Fig. : Pin Pin Assignment Staff Call Connector Connector





F i g . : B l o c k D i a g r a m S w i t c h M o d e P o w e r S u p p l y S M P S

2 2 .4 .4 1 1 .1

F1 T6.25A

Filter (EMC) Filter

L Mains Netz

N

(EMV)

F2 T6.25A

PE

L1

F5 M10A (230V) F20A (110V)

Heater Heizung N1

F6 M10A (230V) F20A (110V)

F5

F6

K4

DC

K3

0V

F_bat Battery 24V Akku 24V (Option)

PE1 F3 T3.15A

DC

Power Factor Correction PFC

+5VD +5VD

20..30Vdc

+5VD

I_bat

F4 T3.15A

ForwardConverter Abwärtswandler

B l o c k D i a g r a m S w i t c h M o d e P o w e r S u p p l y

S w i t c h M o d e P o w e r S u p p l y S M P S ( B e n n i n g )

+5VD 0V


+12VD

GND

0V +12VD 0V

L3


DM i T a l o g M + _ D s mD _ E C 0 h a 8 p C t M e r 2 . _ K 1 A -2 Y 0 0 3 . d o c / p d f < 0 1 1 0 0 3 > d d m m y y

+12VA 0V

Fluid N3 Warmer

-12VA

PE3

Signals Signale 20

Primary Primär

1 / 2 0 0 3

F301 - Power Board 1/2 - Hard Disk Drive - Floppy Disk Drive - Ext. - P14 F302 - Supervisor/Controller F303 - Motherboard F304 - ABPM - P7 - P8

1

Secondary Sekundär

2 6 8

F i g .: S y s t e m

Battery Akku

LC Display

I n t e g r a t i o n

2 .4 1 .2 S y s t e m I n t e g r a t i o n

LVDS

BIB

Backlight Inverter Board

LowVoltageDifferential Signal Adapter

TCB Touch Controller Board

F

TLC

Battery Option Akku-Option

Top Level Controller (GX1LCD Motherboard)

FPB

Charge LED Lade LED

Front Panel Board

FluidWarmer

Fan Mains Switch Lüfter Netzschalter

L N PE

L N PE

X3

Mains Input Netzeingang X1


-12VD

0V

Logic Logik


L N PE

X2

L

Heater Heizung

SMPS Power Board Primary/ Primär

N

SMPS Power Board Secondary/ Sekundär

W 0 0 8 1

Power

P3 P9

Power

T1 K1

24 V Control 24 V Steuerung

Logic Logik Aux. Voltage Hilfspannung

T4 Thermal Fuse Thermosicherung

24V

Message Output MeldungenAusgang

2 x 1F

Heater / Heizung

5V Buzzer Summer Uamax

U Control U-Regler

P2 Heater Control Input

G K O N DHeizungssteuerung Eingang I L C R D D _ _ P _ N G H H H D

Drive for Battery, Buzzer, Clock Ansteuerung für Akku, Summer, Uhr

PFail

P2

P101 Watchdog

+5VD +12VD -12VD +12VAN -12VAN 24VL 24VGB 24VGD

P2

Machine Monitoring Input Geräteüberwachung

N F E S F _ S F _ F O D L L U O _ 4 M N A A K 4 D E G K K 2 K 2 B R / D A A / D A W

B24OK D24OK /PERSR_N /AKKU_OK PF PGD +5VG

2 . T e c h n i c a l S y s t e m D e s c r i p t i o n

1 / 2 0 0 3

2 6 9


F i g .: S y s t e m I n t e g r a t i o n

2 .4 1 .2

Battery Akku

LC Display LVDS

BIB

Backlight Inverter Board

LowVoltageDifferential Signal Adapter

TCB

F

TLC

Touch Controller Board

Battery Option Akku-Option

Top Level Controller (GX1LCD Motherboard)

FPB

Charge LED Lade LED

Front Panel Board

FluidWarmer

L N PE

X1 L N PE



X3

Mains Input Netzeingang

X2

L

Heater Heizung

SMPS Power Board Primary/ Primär

N

SMPS Power Board Secondary/ Sekundär

Aux. Voltage Hilfspannung

Heater / Heizung

U Control U-Regler

P2 Heater Control Input

Heater

PFail

X2 F4 X3 X1.3 X1.1 X1.2 X1.6 X1.5 X1.4 X1 F3 F5 F6 F2 F1 N

Machine Monitoring Input N F E F S F _ F _ S D Geräteüberwachung L L U O _ O 4 M N A A K 4 D 2 E G K K 2 K B R / D A A / D A W

Fluid Warmer

PE3 N3 L3 N2 L2

L

P2

2 6 9

2 .4 1 . 3

Pay Attention to Pin Assignment! Auf Pinbelegung Achten! PE

P2

Watchdog

1 / 2 0 0 3

B24OK D24OK /PERSR_N /AKKU_OK PF PGD +5VG

Drive for Battery, Buzzer, Clock Ansteuerung für Akku, Summer, Uhr

P101

G K L O N DHeizungssteuerung Eingang I C R D D _ _ P _ N G H H H D


Message Output MeldungenAusgang

5V

Uamax

+5VD +12VD -12VD +12VAN -12VAN 24VL 24VGB 24VGD

24 V Control 24 V Steuerung

Logic Logik

Buzzer Summer

Mains Input

Power

P3 P9

2 x 1F

W 0 0 8 1

F i g . : L a y o u t S w i t c h M o d e P o w e r S u p p l y S M P S

24V

Power

T1 K1

T4 Thermal Fuse Thermosicherung


Fan Mains Switch Lüfter Netzschalter

L N PE

DM i T a l o g M + _ D s mD _ E C 0 h a 8 p C t M e r 2 . _ K 1 A -2 Y 0 0 3 . d o c / p d f < 0 1 1 0 0 3 > d d m m y y

S y s t e m I n t e g r a t i o n

PE L1 N1

Regulator Regler

+12VD/ F401 - T3.15A TR5 +12VD/ F402 - T5.00A TR5 +12VAN / F403 - T1.25A TR5 +5VD/ F303 - T3.15A TR5 +5VD/ F302 - T5.00A TR5 +5VD / F301 - T3.15A TR5 +5VD/ F304 - T3.15A TR5 +24 VGD/ F602 - T3.15A TR5 +24VGB/ F601 - T3.15A TR5

LED

F401 F402

3

F403 F303 F302

1


P10

Voltages PC

P4

Voltages Power Board 1/2

P5

Voltages Sup./Contr. Board

3

+24VL


P12

+5V +12V -12V

1

1

F301 F304 3

F602

1

F601

3

1

+

2

P13

P3 1 1

4

P7

P8 1

X100 Fan

Mains Switch/ Fan Voltage FDD Signals Supervisor Board

P9

1

3

1 2

1

P2

31

P101 3

Battery

L a y o u t S w i t c h M o d e P o w e r S u p p l y S M P S


1 / 2 0 0 3

1

Option Option Watch- EXT_ON Voltages ABPM dog HDD 2 7 0


F i g . : L a y o u t S w i t c h M o d e P o w e r S u p p l y S M P S

Mains Input

Heater

2 .4 1 . 3

Fluid Warmer Pay Attention to Pin Assignment! Auf Pinbelegung Achten! PE3 N3 L3 N2 L2

X2 F4 X3 X1.3 X1.1 X1.2 X1.6 X1.5 X1.4 X1 F3 F5 F6 F2 F1 PE

L

N

PE L1 N1

Regulator Regler

+12VD/ F401 - T3.15A TR5 +12VD/ F402 - T5.00A TR5 +12VAN / F403 - T1.25A TR5 +5VD/ F303 - T3.15A TR5 +5VD/ F302 - T5.00A TR5 +5VD / F301 - T3.15A TR5 +5VD/ F304 - T3.15A TR5 +24 VGD/ F602 - T3.15A TR5 +24VGB/ F601 - T3.15A TR5

LED

F401 F402

3

F403 F303 F302

1

P10

Voltages PC

P4

Voltages Power Board 1/2

P5

Voltages Sup./Contr. Board

3

+24VL

1

F301 F304


3

F602

1

F601

3

1



P12

+5V +12V -12V

1

+

2

P13

P3 1 1

4

P7

1 2

P8 1

Fan

1

P2

31

P101 3

X100

Mains Switch/ Fan Voltage FDD Signals Supervisor Board

P9

1

3

Battery

L a y o u t S w i t c h M o d e P o w e r S u p p l y S M P S


1 / 2 0 0 3

1

Option Option Watch- EXT_ON Voltages ABPM dog HDD 2 7 0


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2.41.4 Wiring DiagramSwitch Mode Power Supply SMPS with Battery Option

LC Display

J1

J1

(left) (links)

(right) (rechts)

J1

J3

J5

J7

Charge LED Lade LED

J9

2 - 71


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2.41.4 Wiring DiagramSwitch Mode Power Supply SMPS with Battery Option

LC Display

J1

J1

(left) (links)

(right) (rechts)

J3

J1

J5

J7

J9

Charge LED Lade LED

LED

P12

F401

PE3 N3 L3 N2 L2

X2 PE L N PE L1 N1 F4 X3 X1.3 X1.1 X1.2 X1.6 X1.5 X1.4 X1 F3

F402 F403

P10

F303 F302

Battery

F301 F304

2 x 12V

P4

F602 F601

Switch Mode Power Supply SMPS

P13

P5 P3

P9 P7 P8

X100

- -=blue + +=brown Pin 1/2 Charge LED Lade LED

P2

P101

Fig. : Wiring Diagram Switch Mode Power Supply SMPS with Battery Option

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2.41.5 Description Switch Mode Power Supply The switch mode power supply SMPS is assembled in the rear door. The battery option can be retrofitted in a Dialog+. 110/120/230/240 V 50/60 Hz

Rated Voltage: Fuses: F1/F2

6.25 AT (6.3x32)

Mains input

F3/F4

3.15 AT (TR5)

Fluid warmer

F5/F6

230/240 V: 10 AM (6.3x32) 110/120 V: F20 A (6.3x32)

Heater 1800 W/240 V Heater 1800 W/110/120 V

F301

3.15 AT (TR5)

+5 VD

F302

5.00 AT (TR5)

+5 VD

F303/F304

3.15 AT (TR5)

+5 VD

F401

1.25 AT (TR5)

+12 VD

F402

5.00 AT (TR5)

+12 VD

F403

1.25 AT (TR5)

+12 VAN

F600

10 AM (6,3x32)

+24 VL

3.15 AT (TR5)

+24 VGB

F601/F602

The filter is required for EMC measures (EMC =electromagnetic compatibility).

Filter (EMC)

PFC circuits are used for switch mode power supplies and ensure that the line current is drawn sinusoidally and in phase with the sinusoidal line voltage.

Power Factor Correction PFC

The forward converter (Buck converter also called down switcher) converts an input voltage into a lower output voltage, i.e. the 24 V is converted into ±12 V and +5 V.

ForwardConverter

2.41.6 Pin Assignment Switch Mode Power Supply P2 – Signals to Supervisor Board Pin Signal 1a PF 2a /REM

Description Power Fail Remote control power supply

3a WD_S

Supervisor WATCHDOG

I/O Pin Signal O 1b B24OFF_S I 2b D24OFF_S I

3b AKAL

4a nc 5a nc

I

4b AKAL_S 5b +5VG

Data for shift register 6a H_DIN 7a EXT_STATE Statusfor external switch-on possibility Voltage monitoring blood side 8a B24OK

I 6b PERSR_N O 7b AKKU_EN O 8b D24OK

9a H_DCLK 10a /AKKU_OK

I 9b H_PROG O 10b GND

Clock to load shift register Battery status

Description I/O Switch-off 24 Vsupervisor bloodside I Switch-off 24 V supervisor dialysate I side Audible alarm I Audible alarmsupervisor I Voltage supply for clock on controller O board Signal to activate the staff call O Enable battery operation I Voltage monitoring dialysate O Programming mode for shift register

I

P3 - Battery Connection (ScrewTerminal) Pin Signal Type 1 +24VAKKU stabilised 2 GNDAKKU

MT-MD-DE08C M.KAY


Description Tolerance Charge and dischargecurrent 21 V ... 28 V Ground power

Current [A] 15



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P4 - Voltage Supply Power Board 1/2 Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Signal +5VD GNDD -12VAN +5VD GNDD GNDL +12VAN GNDL GNDL +24VL +24VGB +24VGD +24VL +24VGB +24VGD

Type stabilised

Pin 1 2 3 4 5 6 7 8 9 10 11 12

Signal +12VAN -12VAN GNDAN +12VD -12VD GNDD +24VGB +24VL GNDL +5VD GNDD GNDL

Type stabilised stabilised

Pin 1 2

Signal +5VD GNDD

Type stabilised

Description +5 V digital Ground digital

Pin 1 2 3 4 5 6 7 8 9

Signal +5VD nc GNDD +12VD -12VD GNDD +12VAN -12VAN GNDAN

Type stabilised

Description +5 V digital

Pin 1 2 3 4 5 6 7 8 9

Signal +5VD nc GNDD +12VD -12VD GNDD +12VAN -12VAN GNDAN

Type stabilised

stabilised stabilised

stabilised

rectified rectified rectified rectified rectified rectified

Description +5 V digital (PB1) Ground digital (PB1) -12 V analogue (PB1) +5 V digital (PB2) Ground digital (PB2) Ground power (PB1) +12 V analogue (PB1) Ground power (PB1) Ground power (PB2) +24 V power (PB1) +24 V switched blood (PB1) nc (PB1); +24 V switched dialysate (PB1) +24 V power (PB2) +24 V switched blood (PB2) +24 V switched dialysate (PB2)

P5 - VoltageSupply Supervisor/Controller Board

stabilised stabilised 20...30 V 20...30 V stabilised

Description +12 V analogue -12 V analogue Ground analogue +12 V digital -12 Vdigital Ground digital +24 V switched blood side +24 V power Ground power +5 V digital Ground digital Ground power

P6 - 3½" FloppyDisk Drive

P7 - VoltageSupply Options

stabilised stabilised stabilised stabilised

Ground digital +12 V digital -12 Vdigital Ground digital +12 V analogue -12 V analogue Ground analogue

P8 - VoltageSupply Option ABPM (Automatic Blood Pressure Measurement)

MT-MD-DE08C M.KAY


stabilised stabilised stabilised stabilised

Description +5 V digital Ground digital +12 V digital +12 V digital Ground digital +12 V analogue -12 V analogue Ground analogue



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P9 - Mains Switch andVoltage Supply Fan Pin 1 2 3 4 5 6 7 8 9 10 11 12

Signal AKKU_Laden GND Mains Switch Mains Switch +12VD +12VD Mains Switch nc GND GND Mains Switch nc

Description Display "Charge Battery" Digital ground Logic (1st level) +12 VH (1st level) +12 V digital (fan) +12 V digital (fan) Logic (2nd level)

Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Signal +5VD nc GNDD +5VD nc GNDD +5VD nc GNDD +12VD nc GNDD -12VD +12VD GNDD

Type stabilised

Pin 1 2 3 4

Signal +5VD +12VD GNDD GNDD


Description +5 V digital +12 V digital Ground digital Ground digital

Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Signal +5VD +12VD GNDD +12VAN -12VD GNDD -12VAN GNDAN GNDD +24VL nc GNDL +24VGB +24VGD GNDL


Description +5 V digital +12 V digital Ground digital +12 V analogue -12 Vdigital Ground digital -12 V analogue Ground analogue Ground digital +24 V power Coding Ground power +24 V switched blood +24 V switched dialysate Ground power

Digital ground (fan) Digital ground (fan) GNDH (2nd level)

P10 - Voltage Supply PC Description +5 V digital

stabilised

Ground digital +5 V digital Coding Ground digital +5V digital

stabilised

Ground digital +12 V digital

stabilised

stabilised stabilised

Ground digital -12 Vdigital +12 V digital Ground digital

P11 - VoltageSupply Hard Disk Drive

P12 - VoltageSupply Options

stabilised stabilised stabilised

20 ... 30 V

20 ... 30 V 20 ... 30 V

P13 - Connection Monitor Booster Pin Signal + 24 V (20 .... 28 V 1 GNDD 2 /HSS_ON 3 GNDD 4

MT-MD-DE08C M.KAY


Type

Description Ground digital Ground digital



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P14 - Input Signal /EXT_ON (Switch-on machine fromexternal source) Pin 1 2 3 4 5 6

Signal GNDD /EXT_ON EXT_STATE

Type

Description Ground digital Open collector input Input

+5VD

+5 V digital

ScrewTerminal: X1 - Mains Input, Heater Pin 1.1 1.2 1.3 1.4 1.5 1.6

Voltage L N PE N1 L1 PE

X3 - Fluid Warmer, Relay Monitor Booster Pin Voltage 3.1 L3 3.2 N3 3.3 PE3

Inputs: Mains Switch

2nd level

H_DIN

Data for shift register and watchdog controller

WD_S

Watchdog supervisor

/REM

Remote (clock on controller board)

AKAL

Audible alarm (controller)

AKAL_S

Audible alarm (supervisor)

MSWITCH

Mains switch

B24OFF

+24 VGB ON/OFF (supervisor)

D24OFF

+24 VGD ON/OFF (supervisor)

H_DCLK

Clock for programming shift register

H_PROG

Programming mode shift register

AKKU_EN Rated Mains Voltage

Enable battery operation (only possible in therapy mode ) 110/230 V 50/60 Hz

/EXT_ON The machine can be switched on with this signal (see menu 1.26 Battery Option: external ON ). EXT_STATE

MT-MD-DE08C M.KAY


Status for external switch-on possibility (e.g. central disinfection), simultaneously input and output; the signal is looped through (connector P14/3 =input).



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Outputs: OK B24OK +24VGB

D24OK PERSR_N

+24VGD OK

Staff call

/AKKU_OK Load status of the battery PF Connections Voltages

Power fail (power failure) Fluid warmer, heater +5 VD: ±12 VD: ±12 VAN: +24 VL: +24 VGB: +24 VGD:

Digital Digital Analog Power (non-regulated) Switched blood side Switched dialysis side

EXT_STATE

External machine switch-on (information for TLC), simultaneously input and output; the signal is only looped through (connector P2/7a =output).

Mains Switch ON/OFF

If the Dialog+is switched off via the Automati c Swit ch-Off function in therapy the machine is in standby mode, e.g. the Dialog+can be switched on and off via the disinfection program. The Dialog+is only disconnected from mains if the mains plug is pulled out of the mains socket.

Standby

The power consumption is ≤ 10 W in standby mode.

H_PROG

The H_PROG signal is an open-collector signal and is generated by the LLC.

H_DIN

H_DCLK

0

No programming mode: Data rotate in shift register

1

Programming mode: Shift register can be written

The H_DIN signal is an open-collector signal and is generated by the LLC (data for the shift register to drive the heater).

0

Half-wave of mains voltage for heater switched off

1

Half-wave of mains voltage for heater switched on

The H_DCLK signal is an open-collector signal and is generated by the LLC. The pending data at H_DIN are shifted into the shift register with the H_DCLK signal to drive the heater.

0, 1 Watchdog

Rectangular signal to shift the data into the shift register

A watchdog is integrated to prevent a permanent unitentional drive of the heater in case of a LLC reset. The watchdog is retriggered by the LLC with <2 s. The H_DIN signal is used for triggering. After switching on the switch mode power supply the watchdog prevents a drive of the heater for t =10 s. The watchdog has no safety function and is therefore not tested before the therapy starts.

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2.42

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SafetyConcept

2.42.1 Block DiagramSafety Concept

Controller-Kanal

Supervisor-Kanal

Controller Channel

Supervisor Channel

LC Display

Touch Screen

Supervisor-Fenster Supervisor Window

Controller-Fenster Controller Window Touch Controller Board TCB

LowVoltage Differential Signal Adapter LVDS

Front Panel Board FPB Supervisor/Controller Tasten Supervisor/Controller Keys

AQ

EQ

stop

BP

BP

Video Controller RAM

Controller-Fenster

UI-SW

Diskettenlaufwerk Floppy Disk Drive Festplatte Hard Disk Drive

Supervisor Window

SW-SC

SUPBUS

Top Level Controller

TLC DIABUS Low-Level-Controller

BUS

Low Level Controller

LLC

Motoren Motors

Low Level Supervisor

LLS

S M V

Sensoren Sensors

Low-Level-Supervisor

Ventile Valves

S

Sensoren Sensors

S

Sensoren Sensors

SR

Sicherheitsrelais Safety Relay

24 V Versorgungsspannung 24 V Supply Voltage Fig. : Hardware Safety Concept

MT-MD-DE08C M.KAY




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2.42.2 Description Safety Concept The complete control and monitoring of the system is performed by the controller. The supervisor is an independent protection system and controls the safety relevant process parameters. The double channel design of the hard- and software guarantees the monitoring of the safety relevant input and output values. The input of the setpoint value, the fault free transmission and monitoring of the output values are thereby guaranteed. The safety concept has the following processor systems: •

TopLevel Controller

Top level controller on the top level controller board T TLC

•

Low level controller on the low level controller board LLC LLC

•

Supervisor on the supervisor board LLS

The top level controller TLC consists of: •

PC hardware

•

Operating system(QNX, multi-tasking real time operating system)

The top level controller TLC has the following functions: •

Communication with the user

•

Processing of the process parameters for the LLC

•

Control of the ABPM

•

Balance of ultrafiltration/substitution

The input of the set-point values is performed by: •

Low Level Controller

Touch screen (colour TFT)

•

Floppy disk drive

•

LAN (local area network)

The low level controller LLC has: •

68020 microprocessor system

The low level controller LLC has the following functions:

Software Supervisor Communication Module SW-SC

•

Control of motors and valves

•

Monitoring

The software supervisor communication module (SW-SC module) is a safety independent software module within the TLC. The SW-SC module logically belongs to the supervisor. It has the following functions: •

Front Panel Board FPB

Supervisor

Display of safety relevant data from the supervisor on the TFT

The front panel board FPB has the following functions: •

Interaction with the user via front panel keys and LEDs

•

Drive of loudspeaker

The supervisor consist of: •

80535 microprocessor system

The supervisor has the following functions:

Enter of Set-point Values

•

Signal processing of the sensors

•

Monitoring of the safety relevant process pararmeters

The acquisition of the set-point values (therapy parameters) is performed as follows: •

MT-MD-DE08C M.KAY


Set-point values can be entered by the TLC for preparation of a therapy. The data is transmitted to the LLC and supervisor via the DIABUS.


Braun Dialog +Renal Dialysis Machine Manual

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