Chapter 5 Trouble shooting and maintenance
5-12
Motor overheating
Motor runs unevenly
Is the load or the
current exceeding the
specified value?
Reduce the load
Increase capacities of
iDrive
and
the motor
Use forced cooling on motor
iDrive
fault
Check connections
Clear the problem
Poor connection between
iDrive
and motor
Does motor run
at low speed for
a long time
?
Are voltages between
even
?
Is there anything
preventing cooling
the motor?
YES
YES
YES
YES
YES (-3% of output voltage)
NO
NO
NO
Does it happen
when accelerating/
decelerating?
Is the load
fluctuating?
Vibration in
transmission parts
such as gears?
Is the
acceleration/
deceleration time
suitable?
Increase the acc/dec time
Reduce the load
Increase capacities of
iDrive
and the motor
iDrive
fault
Reduce the load fluctuation or
add a flywheel
Inspect the mechanical system
Contact
iDrive
supplier
YES (-3% of rated output voltage )
YES
YES
YES
NO
NO
NO
NO
Small
Large
Are output voltages
between
balanced?
No
