Fuji Electric FVR-E11S-7EN User Manual

7-1
7. Troubleshooting
7-1 When Protective Function Goes Active
(1) Overcurrent
Overcurrent during
acceleration OC1
Overcurrent during
deceleration OC2
Overcurrent during
constant s peed operation
OC3
Remove a short circuit or
the part including a
ground fault.
Check if the motor connection terminal (U, V, W) circuit includes a
short circuit or ground fault.
Reduce the load or
increase the inverter
capacity.
Check if the
torque boost
amount can be
decreased.
Check if the load is too large.
Check if the torque
boost amount is
proper.
Decrease the torque
boost amount.
Check if the
acceleration time
is too short for the
load.
Failure of the inverter or
malfunction caused by
electric noise or other
cause can be probable.
Contact Fuji Electric.
Check if the
deceleration time is
too short for the
load.
Check if the
acceleration time can
be made longer.
Check if the
deceleration time
can be made
longer.
Set a longer time.
Reduce the load or increase
the inverter capacity.
The braking method
must be examined.
Contact Fuji
Electric.
Reduce the load
fluctuation or
increase the inverter
capacity.
Check if there has
been an abrupt
change in the load.
YES
YES
NO
NO NO NO
NO NO NO
YES
YES
YES
YES
NO
NO
NO
YES
NO
NO
YES
YES
NO

Fuji Electric FVR-E11S-7EN Specifications

General

Brand	Fuji Electric
Model	FVR-E11S-7EN
Category	Inverter
Language	English