AuCom MVE series User Manual page 68

Display Possible cause/Suggested solution
Current imbalance can be caused by problems with the motor, the environment or the installation, such
Current imbalance
as:
•
•
•
•
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.
Current Read Err
Lx
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.
This trip is not adjustable.
Related parameters: None
•
EEPROM fail
•
Reset the fault and then reload the default settings. If the problem persists, contact your local
distributor.
Related parameters: None
The motor was unable to accelerate to full speed in the time allowed.
Excess start time
Excess start time trip can occur in the following conditions:
•
•
•
•
Related parameters: 1A, 2A-2D, 4A, 16B
This is a name selected for a programmable input. Refer to Input A trip.
Feeder Prot
This is a name selected for a programmable input. Refer to Input A trip.
Field Trip
The mains frequency has gone beyond the specified range.
Frequency
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.
Ground fault
Test the insulation of the output cables and the motor. Identify and resolve the cause of any ground fault.
Related parameters: 4O, 4P, 16N
The soft starter is operating at a dangerously high temperature.
Heatsink
overtemperature
•
•
Related parameters: 4M
This is a name selected for a programmable input. Refer to Input A trip.
High Level
This is a name selected for a programmable input. Refer to Input A trip.
High Pressure
The soft starter's programmable input is set to a trip function and has activated. Resolve the trigger
Input A trip
condition.
Related parameters: 6A, 6B, 6C, 6D, 6E, 6F, 6G, 6H, 6I, 6J, 16G, 16H
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 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.
Motor Full Load Current
parameter 1A
Current Limit
parameter 2D
parameter 2B Start Ramp Time
setting
The motor may have experienced an abnormal increase in loading or might be jammed.
Check if ventilation and cooling are adequate.
Reduce the number of consecutive starts by increasing the value set in parameter 4M
Delay
.
is not appropriate for the motor
has been set too low
has been set greater than the setting for 4A
TROUBLESHOOTING
Excess Start Time
Restart
MVE User Manual (710-17074-00G) |
67