TROUBLESHOOTING
70
| MVE User Manual (710-17074-00G)
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Possible cause/Suggested solution
Pump Fault
This is a name selected for a programmable input. Refer to Input A trip.
Starter
communication
(between device
and soft starter)
There could be a problem with the connection between the soft starter and the optional communications
module. Remove and reinstall the module. If the problem persists, contact your local distributor.
The communications module has been powered down while the soft starter remains powered up.
Related parameters: 16J
Starter Disable
This is a name selected for a programmable input. Refer to Input A trip.
Undercurrent
The motor has experienced a sharp drop in current, caused by loss of load. Causes can include broken
components (shafts, belts or couplings), or a pump running dry.
Related parameters: 4C, 4D, 16C
Undervoltage
Mains voltage has fallen below the level selected in parameter 4Q. Causes can include an undersized
supply or adding a large load to the system.
•
Check that the starter is configured appropriately for local conditions.
•
Monitor the mains voltage to determine the cause of the voltage fluctuation, and resolve the cause.
Related parameters: 4Q, 4R, 16V
Vibration Alarm
This is a name selected for a programmable input. Refer to Input A trip.
VZC Fail Px
Where 'X' is 1, 2 or 3.
The voltage detection system has failed.
The voltage dividing resistors have failed or the power interface board may be faulty.
Contact AuCom for advice.
9.3
General Faults
This table describes situations where the soft starter does not operate as expected but does not trip or give a warning.
Symptom
Probable Cause
The soft starter does not respond to the
START or RESET button on the
controller.
•
The soft starter may be in Remote control mode. When the soft starter is in
Remote control mode, the Local LED on the starter is off. Press the LCL/RMT
button once to change to Local control.
The soft starter does not respond to
commands from the control inputs.
•
The soft starter may be in Local control mode. When the soft starter is in Local
control mode, the Local LED on the starter is on. Press the LCL/RMT button once
to change to Remote control.
•
The control wiring may be incorrect. Check that the remote start, stop and reset
inputs are configured correctly (refer to
Control Wiring
on page 19 for details).
•
The signals to the remote inputs may be incorrect. Test the signalling by activating
each input signal in turn. The appropriate remote control input LED should activate
on the starter.
The soft starter does not respond to a
start command from either the local or
remote controls.
•
The soft starter may be waiting for the restart delay to elapse. The length of the
restart delay is controlled by parameter 4M
Restart Delay
.
•
The motor may be too hot to permit a start. If parameter 4N
Motor Temperature
Check
is set to Check, the soft starter will only permit a start when it calculates that
the motor has sufficient thermal capacity to complete the start successfully. Wait
for the motor to cool before attempting another start.
•
The starter may be disabled via a programmable input. If parameter 6A is set to
Starter Disable and there is an open circuit on C53, C54, the MVE will not start. If
there is no further need to disable the starter, close the circuit on the input.
NOTE
Parameter 6Q
Local/Remote
controls when the LCL/RMT button is
enabled.
