Appendix 2 Alarm Code List
Appendix 2 Alarm Code List
Code Screen Display Cause Troubleshooting
ERROR
1. Under-voltage for power
supply
2. The reset function “RES”
is on
3. Bad connection between
the operation panel and
main machine
4. Internal circuit malfunction
5. Wrong CPU operation
1. Provide a normal power supply
2. Shut off “RES”
3. Ensure firm connection
between the operation panel
and the main machine
4. Replace the inverter.
5. Restart the inverter
Over-current
The output current is two times
larger than the rated current of
the inverter.
Please restart the inverter. If the
alarm repeated, please send the
inverter back to the factory.
Over-current
during
acceleration
1. In case the time for
acceleration or deceleration is
too short, extend it as
necessary.
2. Avoid abrupt increase of load.
3. Check Terminals U/T1, V/T2
and W/T3 for short circuit.
Over-current at
Over-current
during
Over-voltage
Over-voltage between
Terminals P and N.
Check whether the power supply is
normal or abnormal.
Over-voltage
during
1. In case the time for
acceleration or deceleration is
too short, extend it as
necessary.
2. Check the brake resistor
between Terminals +/
for loose connection.
3. Check whether the values
of P.30 and P.70
are correct or
not.
Over-
voltage at
constant speed
Over-voltage
during
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