GE Fuji Electric AF-300ES Instructions Manual page 105

Troubleshooting
If the function of the drive is lost by a failure or if an abnormal phenomenon has occurred, refer to the following diagnosis
for its probable cause. If the cause does not fall under the following explanation, or if the drive is damaged, please contact
your distributor.
1 Diagnosis and remedy in case protective function activation.
( 1 ) Overcurrent
acceleration
Reduce the
torque boost
setting
Yes
Is the torque
Can the torque
No
boost setting
boost setting
correct?
be reduced?
No
There is a
Is the
possibility of
acceleration
No
drive failure
time setting too
or a motor
short for the
noise problem.
load?
Please contact
GE Fuji
Can the
acceleration
Yes
Increase the
time be
set time.
increased?
Reduce the
load or
increase the
drive
capacity.
( 2 ) Ground Fault
E F
Is drive output
grounded?
Yes
Repair short-circuit
and/or grounding sections.
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Overcurrent
Overcurrent
during
during
deceleration
O C 1 O C 2
Is motor circuit (U, V, W) of motor shorted or grounded?
No
Is the load too large?
No
Is the
deceleration
time setting
too short for
the load?
Yes
Yes
Can the
Yes
deceleration
time be
increased?
No
No
Review the
system
application
method.
Please
contact GE Fuji
No
There is the possibility of failure in
the drive or a noise problem.
Please contact GE Fuji
No
No
There is the
possibility of
No
failure in the
drive or a
noise problem.
Please contact
GE Fuji
Yes
Prolong the
setting time.
8-9
Overcurrent
steady state
running
O C 3
Repair
short-circuit
Yes
and/or
No
grounding
sections.
Yes
Reduce load
or increase
No
drive
capacity.
Does the load
No
change
suddenly?
Yes
Reduce the
load
fluctuation
or increase
the Drive's
capacity rating.