6 Troubleshooting
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Display Fault Name Possible Causes Solutions
Accumulative
running time
reached
Accumulative running time reaches the setting
value.
Clear the record through parameter initialization.
User-dened fault 1
User-dened fault 1 is input via DI.
Reset the operation.
User-dened fault 1 is input via virtual I/O.
User-dened fault 2
User-dened fault 2 is input via DI.
Reset the operation.
User-dened fault 2 is input via virtual I/O.
Accumulative
power-on time
reached
Accumulative power-on time reaches the
setting value.
Clear the record through parameter initialization.
Off load fault
The output current of AC drive is smaller than
F9-64 (load loss detection level).
Check whether the load is disconnected or the
setting of F9-64 and F9-65 (load lost detection
time) satises actual running conditions.
PID feedback lost
during running
PID feedback is smaller than the setting value
of FA-26 (detection level of PID feedback loss).
Check PID feedback or set FA-26 properly.
Quick current limit
The load is too heavy or locked-rotor occurs on
the motor.
Reduce the load or check motor and mechanical
conditions.
The rated AC drive power is low. Replace the drive by one with higher rated power.
Slave faulty in
speed synchronous
When speed synchronous is enabled, the
master receives CAN communication data
but does not detect the salve. Then Err55 is
reported.
1. Check the slave CAN communication cable
connection.
2. Check whether CAN communication of the
slave is normal.