Binder KBF 720 - Interface Board IB3 (-7 N1) for Step Motor Valve

Repair work at the cooling system
10.6 Interface board IB3 (-7N1) for step motor valve
Figure 58: Interface board IB3 (-7N1 ) for step motor valve
- 4-20
white
green
black
red
IN
GND
24 V +
24 V -
+ 4-20
Step motor
valve
Input
0-10 V DC
Jumper CN2
Outside position: Normal operation
Middle position: step motor valve open
Jumper CN4 never placed
Jumper CN3
always placed
118 Service Manual KBF (E5.2) 04-2015