GE VAT200 Quick Start Manual page 104

The motor is overheated
Is load or current
exceeding the specified
value?
NO
Is it running at low
speed for a long
time?
NO
Are voltage between
U-V,V-W,W-U correct?
YES (within ±3% of the normal value)
Is there any
deterrence preventing
cooling the motor
NO
Bad connection between
and the motor
VAT200
Motor runs unevenly
Does it happen
in decelerating?
NO
Are output voltages
between U-V,V-W,W-U
balanced?
YES (within ±3% of rated output voltage
Is the load
floating?
NO
Vibration degree in transmission
parts such as gears?
Small
YES
YES
YES
YES
Is the
YES
acceleration time
correct?
NO
YES
5-12
Chapter 5 Troubleshooting and maintenance
Reduce the load.
Increase capacities of
and the motor.
VAT200
Select the motor again
faults
VAT200
Clear the deterrence
Correct the bad connection
NO
Increase the acc/ dec time
Reduce the load.
YES
Increase capacities of
and the motor.
VAT200
VAT200 faults
Reduce the load floating or
add a flywheel.
Input the mechanical system
VAT200
faults