What is Negative Slip F Alarm on a Parker AC Drive?

[rickpend]

What is Negative Slip F Alarm on a Parker AC Drive?

What is Parker NEGATIVE SLIP F alarm mean on a Parker AC drive? I'm looking for a simple explanation as to what Negative Slip F means.

And how do you clear the "negative slip f" alarm from a Parker AC drive?

[tomtester]

What is Negative Slip F Alarm on a Parker AC Drive?

Here's what the manual says: 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.

This seems like a calibration issue with the RPM setting, you'll need to look at this value and see where you have it set..