General Faults - AuCom MVE Series User Manual

Display
PLC
Power loss
Pump Fault
Starter
communication
Starter Disable
Undercurrent
Undervoltage
Vibration Alarm
VZC Fail Px

11.3 General Faults

This table describes situations where the soft starter does not operate as expected but does not trip or give a
warning.
Symptom
The soft starter does not respond
to the START or RESET button on
the controller.
The soft starter does not respond
to commands from the control
inputs.
Possible cause/Suggested solution
This is a name selected for a programmable input. Refer to Input A trip.
This trip is not adjustable.
The starter is not receiving mains supply on one or more phases.
Check that the main contactor closes when a start command is given, and remains closed
until the end of a soft stop. Check the fuses. If testing the soft starter with a small motor, it
must draw at least 10% of the starter's programmed FLC setting on each phase.
Related parameters: None
This is a name selected for a programmable input. Refer to Input A trip.
There is a problem with the connection between the soft starter and the optional expansion
card. Remove and reinstall the card. If the problem persists, contact your local distributor.
Related parameters: None
This is a name selected for a programmable input. Refer to Input A trip.
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: 5C, 5D, 6D
Mains voltage has fallen below the level selected. Causes can include an undersized supply
or adding a large load to the system.
Related parameters: 5G, 5H, 6F
This is a name selected for a programmable input. Refer to Input A trip.
Where 'X' is 1, 2 or 3.
Internal fault (PCB fault). Contact your local supplier for advice.
Related parameters: None
Probable Cause
• 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 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
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 controller.
• If no external reset is connected, use parameter 6M to set the reset input to
normally open or fit a link across terminals C41, C42 on the controller.
TROUBLESHOOTING
Control Wiring
on page 18 for
MVE User Manual (710-17074-00H) |
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