Why NLP status comes in Schneider ATV630 VFD.

Описание к видео Why NLP status comes in Schneider ATV630 VFD.

Reasons of NLP status in Schneider ATV630 VFD:
1. Input line voltage RMS is low.
2. DC Bus Voltage is low.
3. DC Bus Voltage = Input Line Voltage (RMS) * 1.414
4. Rectifier is damage.
5. Build-in Main Switch contact is damage.
6. Pre-fuse may be damage.
7.LC ckt may be damage.

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