Owner's manual

Type 8660 Control Center
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Figure 4: Plug wiring diagram for Control Center 2 and 3
(CC: Control Center)
Reverse polarity protection:
The supply inputs of the Control Center are permanently protected against reverse
polarity of ground and plus (up to +30 V DC).
Short circuit protection:
Terminals 35 and 36 (front box valve motor) are only protected against a short circuit
with ground, but not against a short circuit with +24 DC.
All of the other inputs and outputs of the Control Center are protected against a short
circuit with ground, as well as with plus (up to +30 V DC).
Plug wiring diagram for front box valve:
Pin Connection Color
1 valve motor
2 valve motor
3 shield
4 potentiometer, GND
5 potentiometer, sliding contact
6 potentiometer, +
Figure 5: Plug wiring diagram for front box valve (Hirschmann plugs)