IMO iDrive - 5.3 iDrive Troubleshooting Flowcharts

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
D
oes mo
t
or run
at low speed for
a long time
?
Are voltages between
even?
Is there anything
p
reventing cooling
the motor?
YES
YES
YES
YES
YES (within +-3% of output voltage)
N
O
N
O
N
O
Does it happen
when accelerating/
decelerating?
Is the load
fluctuating?
Vibration in
transmission parts
such as gears?
Is the
acceleration/dec
eleration 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 (within +-3% of rated output voltage )
YES
YES
YES
N
O
N
O
N
O
N
O
Small
Large
A
re output vo
l
tages
between
balanced?
N
o