Troubleshooting; Activation Of Protective Function - GE AF-300 P11 User Manual

7. Troubleshooting

7.1 Activation of Protective Function

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