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Trips and Fault Finding
7-5
650S AC Drive
ID
Trip Name
Possible Reason for Trip
13 LOST COMMS
Lost communications:
•
COMMS TIMEOUT parameter set too short
•
Master device failed
•
Wiring broken
•
Incorrect Comms setup
14 CONTACTOR FBK
Contactor feedback signal lost:
•
Check connection to the terminal wired to "contactor closed" parameter in
Sequencing Logic (non-standard configuration)
15 SPEED FEEDBACK
Speed feedback:
•
SPEED ERROR > 50.00% for 10 seconds
17 MOTOR OVERTEMP
The motor temperature is too high:
•
Excessive load ( Thermal switch )
•
Excessive load ( I2T software protection )
•
Motor voltage rating incorrect
•
Prolonged operation of the motor at low speed without forced cooling
•
Break in motor thermistor connection
18 CURRENT LIMIT
Software overcurrent trip:
•
If the current exceeds 180% of stack rated current for a period of 1 second,
the drive will trip. This is caused by shock loads. Remove the shock load.
•
ACCEL TIME and/or FIXED BOOST set too high
•
DECEL TIME set too low
21 LOW SPEED OVER I
•
The motor is drawing too much current (>100%) at zero output frequency