AuCom MVE Series User Manual page 67

TROUBLESHOOTING
Display
Current imbalance
Current Read Err
Lx
EEPROM fail
Excess start time
Feeder Protection
Field Trip
Frequency
Ground Fault
Heatsink
overtemperature
High Level
High Pressure
Input A trip
Input B trip
66
| MVE User Manual (710-17074-00H)
Possible cause/Suggested solution
Current imbalance can be caused by problems with the motor, the environment or the
installation, such as:
An imbalance in the incoming mains voltage
•
• A problem with the motor windings
• A light load on the motor
A phase loss on input terminals L1, L2 or L3 during Run mode
•
• An SCR that has failed open circuit. A failed SCR can only be definitely diagnosed by
replacing the SCR and checking the starter's performance.
Related parameters: 4H, 4I, 16E
Where 'X' is 1, 2 or 3.
Internal fault (PCB fault). The output from the CT circuit is not close enough to zero when
the SCRs are turned off. Contact your local supplier for advice.
Related parameters: None
• An error occurred loading data from the EEPROM to RAM when the controller powered
up.
• "Load User Set" has been selected but no saved file is available.
Reset the fault and then reload the default settings. If the problem persists, contact your
local distributor.
Related parameters: None
Excess start time trip can occur in the following conditions:
Motor Full Load Current
• parameter 1A
Current Limit
• parameter 2D
Start Ramp Time
parameter 2B
•
Start Time
Start Ramp Time
• parameter 2B
Adaptive Control
Related parameters: 1A, 2B, 2D, 3D, 3F
This is a name selected for a programmable input. Refer to Input A trip.
This is a name selected for a programmable input. Refer to Input A trip.
The mains frequency has gone beyond the specified range.
Check for other equipment in the area that could be affecting the mains supply, particularly
variable speed drives and switch mode power supplies (SMPS).
If the MVE is connected to a generator set supply, the generator may be too small or could
have a speed regulation problem.
Related parameters: 4J, 4K, 4L, 16F
• Ground current (monitored through a dedicated current transformer) has exceeded
the selected level. Test the insulation of the output cables and the motor. Identify and
resolve the cause of any ground fault.
The starter may also report a ground fault trip if one phase is lost. Check the supply
•
and the input and output connections at the starter and at the motor end.
Related parameters: 4O, 4P, 16N
The soft starter is operating at a dangerously high temperature.
• Check if ventilation and cooling are adequate.
Reduce the number of consecutive starts by increasing the value set in parameter 4M
•
Restart Delay
.
Related parameters: 4M
This is a name selected for a programmable input. Refer to Input A trip.
This is a name selected for a programmable input. Refer to Input A trip.
The soft starter's programmable input is set to a trip function and has activated. Resolve
the trigger condition.
Related parameters: 6A, 6C, 6D, 6E, 6F, 6H, 6I, 6J
is not appropriate for the motor
has been set too low
has been set greater than the setting for 4A
is set too short for a high inertia load when using
Excess