63
Continued from previous
4. Replace X3. Remove the contactor X312
and measure the resistance of the contactor
with the motor cabling between X312:4 - 5.
Contact Interruption
Defective cabling
between motor
controller and motor.
Inspect the cabling and
replace if necessary.
Internal error in the thermal sensor of the motor
controller detector.
5. Switch of the wall-mounted power switch. Undo
the contactor at X3 on the motor. Use an ohmmeter to
measure the resistance towards the motor. Measure
between 1-2, 1-3, and 2-3.
Resistance
SU620 4 ohm
SU630 2 ohm
SU645 1.2 ohm
SU660 0.8 ohm
SU677 0.8 ohm
Correct resistance One of the resistance values is
incorrect
The motor is probably
defective.
Troubleshoot the cabling between the motor and motor
controller.
34
3402
Contactor X3, female towards motor
Measure resistance between
pins 1, 2 and 3
33
5181
X312
33
34
1
3
Troubleshooting
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