I have a Rockwell Mill wiith the power table feed. The original feed
controller is history. I purchased a controller from Beel Industries. The
problem is the field of the motor is 60VDC and the Beel product puts out
90VDC. Instant short when voltage applied. If I back the input voltage down
to ~60 VAC with a Variac all is well. No short or blown fuses, speed control
works fine.

I would like to eliminate the variac.

How is the best way to do it?

I've considered a step down transformer (220-110) hooked to 110. I don't
know how the controller will like 60v in as far as power output (with the
variac the motor was running free, no load) Or even if this will work at
all.

A separate transformer for the field once I figure the current requirements
with it's own bridge rectifier and then the controller run on 110
separately.

I've even thought about having the field rewound to 90v.

Other ideas?????

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Clif Holland KA5IPF
www.avvid.com