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Re: Anilam (Baldor) DC Servo Power

Posted: Wed Oct 13, 2021 8:33 am
by jaystew324
Hello,

I just ordered an Allin1DC to retrofit my Anilam 1100 as well. Just wondering if you ended up needing a step down transformer or if you were able to run the 160VDC directly.

thanks,
Jason

Re: Anilam (Baldor) DC Servo Power

Posted: Wed Oct 13, 2021 4:43 pm
by CRM
The initial config included a step down X-former. I could not achieve full rapid speed, so I took it out and am running about 6 volts above the max rated voltage for the servos. I do this at my own risk.

Re: Anilam (Baldor) DC Servo Power

Posted: Fri Oct 15, 2021 9:54 am
by jaystew324
My servos show a max voltage of 140VDC on the name plates. If I rectify the 120VAC line voltage I would get 168VDC (120VAC x 1.4 = 168VDC). As far as I can tell this seems to be what Anilam did because I do not see a large transformer anywhere in the cabinet. Could they really have been running 28VDC over the motor rating? Seems like a lot to me. Am I missing something?

thanks for your help,
Jason

Re: Anilam (Baldor) DC Servo Power

Posted: Fri Oct 15, 2021 10:12 am
by CRM
Centroid will say for liability reasons that you need a step down transformer. So that's what I did at first. But I could not achieve the rapid speeds I had prior to swapping the old Prototrak control with the All In One DC control. Further inspection showed SouthWest Industries was using direct rectification, so I eliminated the step down X-former, after which I could again achieve 150 IPM rapids. I believe my previous posts show a pic of the servo motor nameplate, (Magnetek, 140VDC). That would be comparable with your Baldors.

Re: Anilam (Baldor) DC Servo Power

Posted: Fri Oct 15, 2021 10:22 am
by jaystew324
Thanks for your help. I guess I'll give it a shot directly rectifying the line voltage. Fingers crossed that I don't smoke a servo.

Re: Anilam (Baldor) DC Servo Power

Posted: Fri Oct 15, 2021 10:44 am
by CRM
It is my understanding that you won't get full current unless you are loading at near full thrust. Lots of rapids ot motion reversals. Feel the servos for heat build up.