Fault Tracing - Vacon 20 X Installation, Technical And Maintenance Manual

vacon • 65
7.4.8

Fault tracing

Fault
Fault name Subcode
code
1 Overcurrent
Overvoltage
2
Earth fault
3
8 System Fault
7
Possible cause
AC drive has detected too high a cur-
rent (>4*I ) in the motor cable:
H
• sudden heavy load increase
• short circuit in motor cables
• unsuitable motor
The DC-link voltage has exceeded the
limits defined.
• too short a deceleration time
• brake chopper is disabled
• high overvoltage spikes in sup-
ply
• Start/Stop sequence too fast
Current measurement has detected
that the sum of motor phase current
is not zero.
• insulation failure in cables or
motor
84 MPI communication crc error
89 HMI receives buffer overflow
90 Modbus receives buffer overflow
93 Power identification error
97 MPI off line error
98 MPI driver error
99 Option board driver error
100 Option board configuration error
Table 78. Fault codes and descriptions.
Options
Remedy
Check loading.
Check motor.
Check cables and connections.
Make identification run.
Check ramp times.
Make deceleration time longer.
Use brake chopper or brake resis-
tor (available as options).
Activate overvoltage controller.
Check input voltage.
Check motor cables and motor.
Reset the fault and restart.
Should the fault re-occur, contact
the distributor near to you.
Check PC-drive cable.
Try to reduce ambient noise
Check Modbus specifications for
time-out.
Check cable length.
Reduce ambient noise.
Check baudrate.
Try to reduce ambient noise.
Reset the fault and restart.
Should the fault re-occur, contact
the distributor near to you.
Reset the fault and restart.
Should the fault re-occur, contact
the distributor near to you.
Reset the fault and restart.
Should the fault re-occur, contact
the distributor near to you.
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.
Check contact in option board slot
Try to reduce ambient noise;
Should the fault re-occur, contact
the distributor near to you.