Mitsubishi Electric FATEC FR-A800 Manual page 80

5
BREAKDOWN MAINTENANCE
(1) Procedure on the instantaneous power failure
1) Use FR Configurator2 to check the graph when E.IPF is displayed.
Set the trigger position to 50%.
2) Check that the operation continues when setting the instantaneous power failure time setting
timer to 0 second and pressing the instantaneous power failure button.
3) Use FR Configurator2 to check the period of time that Err. display continues after restarting,
when setting the instantaneous power failure time setting timer to 0.1 seconds or more and
pressing the instantaneous power failure button.
4) To prevent instantaneous power failure, a stable power supply is required (such as installing
UPS and switching to DC auxiliary power supply).
5.2 Troubleshooting by the demonstration machine
Instantaneous power
failure occurs.
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