Vacon 20 CP, Installation, Technical And Maintenance Manual

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8
vacon • 87 Options
8.5 Fault tracing
Fault
code
Fault name Subcode Possible cause Remedy
1 Overcurrent
AC drive has detected too high a
current (>4*I
H
) in the motor cable:
• sudden heavy load increase
• short circuit in motor cables
• unsuitable motor
Check loading.
Check motor.
Check cables and connections.
Make identification run.
Check ramp times.
2
Overvoltage
The DC-link voltage has exceeded
the limits defined.
• too short a deceleration
time
• brake chopper is disabled
• high overvoltage spikes in
supply
• Start/Stop sequence too fast
Make deceleration time longer.
Use brake chopper or brake resistor
(available as options).
Activate overvoltage controller.
Check input voltage.
3
Earth fault
Current measurement has
detected that the sum of motor
phase current is not zero.
• insulation failure in cables
or motor
Check motor cables and motor.
84 MPI communication crc error
Reset the fault and restart.
Should the fault re-occur, contact the
distributor near to you.
89 HMI receives buffer overflow
Check PC-drive cable.
Try to reduce ambient noise
90 Modbus receives buffer overflow
Check Modbus specifications for
time-out.
Check cable length.
Reduce ambient noise.
Check baudrate.
8
System Fault 93 Power identification error
Try to reduce ambient noise.
Reset the fault and restart.
Should the fault re-occur, contact the
distributor near to you.
97 MPI off line error
Reset the fault and restart.
Should the fault re-occur, contact the
distributor near to you.
98 MPI driver error
Reset the fault and restart.
Should the fault re-occur, contact the
distributor near to you.
99 Option board driver error
Check contact in option board slot
Try to reduce ambient noise;
Reset the fault and restart.
Should the fault re-occur, contact the
distributor near to you.
100 Option board configuration error
Check contact in option board slot
Try to reduce ambient noise;
Should the fault re-occur, contact the
distributor near to you.
Table 39. Fault codes and descriptions.