GE Industrial Solutions AF-300 G11 - Manual (Page 102)

7-1
Data subject to change without notice 7/07. © 2007 GE Drives
7. Troubleshooting
7.1 Activation of Protective Function
(1) Overcurrent
Overcurrent during
acceleration OC1
(2) Ground fault
(3) Fuse brown
Note: The ground fault protective function is provided only for drive for nominal applied motors rated at
40 HP or more.
Overcurrent during
deceleration OC2
Overcurrent running at
constant speed OC3
Are the motor connecting terminals (U, V, W) short-circuited or grounded?
Is the load excessive?
Overcurrent during
acceleration OC1
Is the acceleration time
setting too short
compared with the load?
Is the deceleration time
setting too short
compared with the load?
Has the load changed
suddenly?
Can the acceleration time
setting be prolonged?
Remove the short-circuit
and ground fault.
Reduce the load or increase
the drive capacity?
Can the torque boost
amount be reduced?
Reduce the torque boost.
Faulty drive or error due to
noise. Consult with GE Drives.
Prolong time settings.
Reduce the load or increase
the drive capacity.
Can the deceleration time
setting be prolonged?
The braking method
requires inspection.
Contact GE Drives.
Remove the grounded part.
Ground fault
EF
Is a part in the drive output circuit
(cable, motor) grounded?
Faulty drive or error due to noise.
Contact GE Drives.
Reduce the load or increase
the drive capacity.
Possible short-circuit
within the drive.
Contact GE Drives.
Fuse brown
FUS
YES
NO
YES
YES
NO
NO
NO NO NO
NO
NO
YES
YES
YES
YES
NO
NO
YES
NO
YES
NO
YES
NO