Thread: 525 UDFB in CCW
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Old December 7th, 2017, 05:52 AM   #11
PLC Pie Guy

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Join Date: Jun 2013
Location: Halifax
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"As my speed ramp up and down as per my PID the drive frequency stay at 50HZ because it speed reference is no longer 1 its 2 which mean speed reference 2."

I'm not clear on this.

Are you saying that the drive parameter for speed reference is changing from 1 to 2?

Did you set your drive parameters up for Eth I/P control ?

P46 - start source and P47 - Speed reference?

Also make sure that the Min freq. P43 is not set to a high value. Iv seen that happen before. Min = 60HZ so the drive will never ramp down.
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