Regenerative Overvoltage Trip During Deceleration (E.ov3 Display) [Demonstration] - Mitsubishi Electric FATEC FR-A800 Manual

5
BREAKDOWN MAINTENANCE
5.2.3 Regenerative overvoltage trip during deceleration (E.OV3 display)
[Demonstration]
Change F011 (Pr.8) (Deceleration time) from the initial value "5" to "1" second and turn ON STF and
high speed RH. Turn OFF STF after 60 Hz is displayed and check that E.OV3 is displayed.
The shorting bar between PX and PR on the terminal block on the rear side of the demonstration
machine is removed.
The shorting bar between PX and PR is detached.
P1 P
(1) Corrective action
1) Use FR Configurator2 to measure the timing when regenerative overvoltage trip during
deceleration (E.OV3 display) occurs, and the level of the converter output voltage.
Set the trigger position to 50%.
phase loss
PX PR
5.2 Troubleshooting by the demonstration machine
Motor PS and
SD short
Normal
Open
Converter output
voltage increases after
deceleration.
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