Panasonic AAD03011 - MCCB Trips; Motor Has over Temperature; Communication Is Not Available

Troubleshooting㽳
1. MCCB trips
Is the capacity selection of MCCB correct ?
Yes
Is input/output terminal wiring correct?
Yes
Does a ground fault exist in main circuit wiring?
MCCB failure or inverter malfunction.
(Contact us.)
Note) Use a current leakage circuit breaker
that supports the inverter.
No
2. Motor has over temperature
Is the motor overloaded?
No
Are voltage/frequency characteristics correct?
Yes
Is the load factor reduction correct for
continuous operation at low frequency?
Inverter malfunction
(Contact us.)
Yes
䊶 Reduce the motor load factor.
䊶 Increase the motor capacity.
(If the motor capacity exceeds the inverter
capacity, increase the latter as well.)
No
䊶 Reduce voltage/frequency characteristics.
Does an open phase exist in the
output of the inverter?
Yes
No
No
䊶 Reduce the motor load factor, or
carry out forced cooling.
䊶 Increase the motor capacity.
(If the motor capacity exceeds the inverter
capacity, increase the latter as well.)
䊶 Check if output frequency can be
increased for use.
3. Communication is not available
Is wiring correct?
Yes
Is communication setting correct?
Yes
Does noise exist?
Inverter malfunction
(Contact us.)
No
Yes
䊶㩷Reduce the noise around the inverter.
䊶㩷Separate the communication cable
and the other wirings.
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