Troubleshooting㽲
Wait at least 5 minutes after turning the power supply OFF before starting
maintenance and inspection.
Failure to do so could lead to electric shock.
Maintenance, inspection and part replacement must be done by qualified persons.
[Remove all metal personal belongings (watches, bracelets, etc.) before
starting work.]
(Use tools treated with insulation.)
Failure to do so could lead to electric shock or injury.
Caution
1. The motor does not rotate(when fault display is not lit).
Is the power voltage normal?
Yes
Is "000" displayed on the panel?
Press the MODE button to display "000".
No
Yes
Turn the local or external run signal ON.
Set the frequency setting value to 0.5Hz or more.
The frequency does not appear, or there is no output voltage.
The inverter is faulty.
(Contact us.)
Voltage is supplied to the motor.
The motor is faulty.
Yes Yes
2. The motor does not rotate(when fault display is lit).
If the phenomenon occurs for the first
time or immediately after installation.
Remove power supply (U, V and W) on
the inverter load side.
Yes
Turn the local or external run signal ON.
Appear OC1, etc. displayed on the pages 84 and 85.
Yes
Inverter malfunction
(Contact us.)
When one of the faults on pages 89 and 90 is displayed and the motor has not rotated,
check the following two points:
㽲 Check the malfunction occurs for the first time (after installation) or it has been in
use for a period.
㽳 Check if this is an inverter malfunction (failure), a wiring, or a motor malfunction.
䋪Check the run signal and setting data.
䋪Check the frequency setting signal and setting data.
䋣
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