Instruction manual

245
Check first when you have a trouble
6
TROUBLESHOOTING
Parameter
setting
Inverter decelerated to a stop when power failure
deceleration stop function is selected.
When power is restored, ensure the safety, and turn
OFF the start signal once, then turn ON again to restart.
Inverter restarts when Pr. 261="2".
186
Performing auto tuning.
When offline auto tuning ends, press on the
operation panel for the PU operation. For the Network
operation, turn OFF the start signal (STF or STR).
This operation resets the offline auto tuning, and the
operation panel monitor display returns to the normal
indication.
(Without this operation, next operation cannot be
started.)
146
Automatic restart after instantaneous power failure
function or power failure stop function is activated.
(Performing overload operation with single-phase
power input model may cause voltage insufficiency, and
results in a detection of power failure.)
 Disable the automatic restart after instantaneous
power failure function and power failure stop function.
 Reduce the load.
 Increase the acceleration time if the automatic restart
after instantaneous power failure function or power
failure stop function occurred during acceleration.
180,
186
Load
Load is too heavy. Reduce the load. —
Shaft is locked. Inspect the machine (motor). —
Others
The program, which starts inverter operation, has not
been designed correctly.
Design the program correctly. 67
The program, which starts inverter operation, has not
been executed correctly.
Execute the program correctly. 67
Operation panel display shows an error (e.g. E.OC1).
When any fault occurs, take an appropriate corrective
action, then reset the inverter, and resume the
operation.
233
Check
points
Possible Cause Countermeasures
Refer
to
page