Service
Manual
23
23. Programme unit
4
438 9145-41/03
03.11
5370
Door lock controller
A31
Motor
controller
U1
Level
guard B2
Heater
elements
Voltage
supply
K21
M1
Door lock
A41
Programme unit
A1
Transformer
T10
Communication card
A21
Water
valves
Drain
valves
Temp.
Level guard
Emergency
stop
I/O card 1
A11
I/O card 2
A12
Display card
Card reader
Control panel
Communication card A22
• I/O cards A11 and A12
Most smaller machines have only one card: A11. On some machines,
there is a greater need for outputs, in which case two I/O cards are
used.
The I/O cards are controlled by the CPU card via a serial interface. The
I/O cards feature outputs, which, via the communication cards in the rear
electric box, control various machine functions, such as the water
valves, heater connection and drain valve. On the input connection
blocks of the communication cards, it is possible to connect signals for
control of e.g. the detergent supply.
The cards also have inputs for emergency stop and door lock ACK.
2
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