Grubbs1960's latest activity

Baluncore said: Does the current fall, under no load, as you increase the running frequency from 50 Hz to 100 Hz ? Yes. At 50 Hz, the...

Done, see my reply above to Baluncore. During discussion with the VFD tech, he suggested the same thing, so it was in that mode when I...

If I understand this correctly, you are suggesting that I can reduce the amp draw at the lower frequencies by lowering the output...

One thing that I did notice is that the voltage on the tag reads 220v. I had been thinking it was 230v, which is what I set that...

Not sure what happened there. Hopefully it will work this time. Yes, new drive, configured for US and 60Hz It is in general mode. I...

I hope it’s perfectly normal. I was able to set up and turn an approximately 2.5” (525mm) diameter red oak cylinder with amp draw never...

After 7 minutes of continuous running at no load, the stator temp rose from 22.9C to 23.6C. At the end of this trial, the copper wire of...

I perused my manual again and found no input parameter that would allow me to enter the number of poles. Here’s a link to the...

I will try running a little longer while monitoring this. Thanks for the wiki link as well.

Grubbs1960 said: Perhaps it is as simple as even when the switchgear is operated, causing momentary break of main motor with VFD, the...

I have not noticed any wires getting hot, but I have not left it powered on for more than a minute or so. Would there be some other...

Yes to phase and voltage. I am not familiar with AT1 type designation. Yes Thanks for this, although I still don’t have the...

I do not have access to a megger. But I would like to understand this better. My perhaps incorrect/incomplete understanding is that a...

I have done some additional testing of the motor and observed some things that are puzzling/concerning: 1. When wired in the 600 rpm...