Cooling Unit Control - Kemppi WeldForce KPS 3500 Service Manual

Cooling unit control

d
e
a)
Voltage on connector X010 between pins 2-6, measuring point d:
a) Pump motor ON
b) Pump motor OFF
c) Pump motor continous run selected
e
a)
Voltage on connector X010 between pins 1-6, measuring point e:
a) Pump motor is ON, monitoring OK
b) Coolant has overheated > + 60º C
c) Coolant pressure < 1 bar.
400 V ∼
400 V ∼
+ 24 V
Pump control
GND
Monitoring (pressure / temperature)
d
b)
b)
d
c)
e
c)
d
e
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