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At occurrence of an instantaneous power failure alarm or power supply alarm, the inverter output may
be shut off to coast the motor before the power regeneration common converter outputs an alarm.
In a system where an alarm will cause an emergency stop, configure up a system that will not only
provide alarm outputs of the power regeneration common converter and inverter but also make a stop
if the RUN signal of the inverter turns off.
3.1.2
Alarm symptoms and check points
Symptom
Operation is not normal.
The CHARGE lamp is not lit.
The reactor becomes abnormally hot. Check connection.
The inverter cannot be run.
CAUTION
Check connection.
Check for incorrect wiring.
Check that a normal power supply voltage is applied.
Check that the phase sequence matches.
Check for a short across terminals RES-SD.
Check connection.
Check for incorrect connection.
Check that the main circuit terminals R2/L1, S2/L2, T2/L3 are wired correctly.
Check for incorrect connection.
Check that the phase sequence matches.
Check setting.
For the FR-A700, F700, A500, F500 or V500 series inverter, check that the Pr. 30
"Regenerative function select" setting is 2 (high power factor converter, power
regeneration common converter).
31
Errors (Alarms)
Check point
3
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