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HOME ⊙ Other Brands ⊙ Fuji FRENIC Mini inverter troubleshooting
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Fuji FRENIC Mini inverter troubleshooting

F: | Au:FANS | DA:2026-05-29 | 47 Br: | 🔊 点击朗读正文 ❚❚ ▶ | Share:

Check the alarm history (menu # 6, latest alarm record) and confirm that it is 0c1 (accelerated overcurrent).

Measure the output current, and the peak value at the moment of startup reaches 18A (rated 12A for the frequency converter, with a 150% overload capacity of 18A for 1 minute), but the fan is only 5A during normal operation.

Check that the length of the motor cable is about 80 meters and no output filter has been added. Long lines cause excessive distributed capacitance, resulting in a spike in charging current during startup.

Solution: Reduce the carrier frequency F26 from 8kHz to 4kHz and set H12=1 (enable instantaneous overcurrent limitation). At the same time, an output reactor (OFL) is installed on the output side of the frequency converter. After adjustment, 0c1 disappeared.

Inspiration: When driving with a long line, it is necessary to reduce the carrier frequency and consider the output reactor, and the motor tuning should be carried out after the line is connected.

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