Parker AC690, AC890, AC30, AC10 & Fastpack Drive
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Apr 29, 2025 11:02 am
ATN5 NEGATIVE SLIP F fault in Parker AC890 drive - This fault comes when autotune has calculated a negative slip frequency, which is not valid.
- Nameplate rpm may have been set to a value higher than the base speed of the motor.
- Check nameplate rpm, base frequency, and pole pairs are correct.
