GE Fuji Electric AF-300ES Instructions Manual page 106

( 3 ) Overvoltage
O U 1
No
Failure in the
drive or
misoperation
due to electrical
noise can be
considered.
Contact No
Will action take place after rapid
GE Fuji.
acceleration is completed?
Can the acceleration time be
increased?
Can the load inertia be decreased?
Is the braking unit and braking resistor installed and activated?
Review the control and system application again. Contact GE Fuji
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Is the power supply voltage within the specified limits?
Yes
Will fault take place when the load is removed suddenly?
No
Was DC bus voltage above alarm level when alarm occurred?
Yes
Yes
No
No
8-10
O U 2
O U 3
Yes
No
Can the deceleration time be
increased?
No
Yes
No
Yes
The power
supply
No
voltage
should be
Yes corrected.
Yes
No
Yes
Yes
Increase
the timed
setting
No
Yes
Decrease until the
failure does not
No occur.
No
Investigate braking unit,
braking resistor or DC
Yes
brake for correct
connection rating and
control settings.