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Fuji Bikes FRENIC 5000G11S/P11S Benutzerhandbuch

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7-1
7.Trouble shooting 
7.1  Protective function activation 
(1) Overcurrent 
YES
NO
NO
NO
YES
NO
NO
NO
YES
YES
YES
Are the motor connecting terminals (U, V, W) short-circuited or grounded?
 Reduce the load or increase
 the inverter capacity.
Is the load excessive?
Can the torque boost
amount be reduced?
Remove the short-circuit 
and ground fault.
Prolong time settings.
Faulty inverter or error
 due to noise.
Consult with Fuji Electric.
Reduce the load or increase
 the inverter capacity.
Is the torque boost
correct?
Reduce the torque boost. 
Is the acceleration time 
setting too short 
compared with the load?
YES
Has the load changed
 suddenly?
NO
NO
NO
YES
NO
Can the deceleration time
 setting be prolonged?
YES
NO
The braking method 
requires inspection.
Contact Fuji Electric.
Reduce the load or increase
 the inverter capacity. 
YES
Overcurrent 
during acceleration
OC1
Is the deceleration time 
setting too short compared
 with the load?
Can the acceleration time
 setting be prolonged?
YES
Overcurrent
during deceleration
OC2
Overcurrent
running at constant speed
OC3
NO
 
(2) Ground fault   
 
Note:The ground fault protective function is provided only for inverter for nominal applied motors rated at 40HP or more.
 
 
 
(3) Fuse brown 
Fuse brown
FUS
Possible short-circuit
within the inverter.
Contact Fuji Electric.
 
 
 
Ground fault 
EF
 
 
Remove the grounded part. 
 
YES
Faulty inverter or error due to noise. 
Contact Fuji Electric.
 
NO 
 
Is a part in the inverter output 
circuit (cable, motor) grounded?