Monarch 10EE and VFD conversion

Jon Anderson · 2010-11-03T16:09:42+00:00

Found a 10EE in the SF Bay Area on Craigslist, model, says ready for VFD conversion.What all is involved in doing this conversion and what is it likely to cost me assuming I don't have lots of time to shop for bargains on any needed components?Will the 10EE cut metric threads native, or does it require transposing gears? If the latter, how hard is it to locate the required parts?Anyone here see this lathe in person and know anything about it's overall condition? The trip down would burn a day for me and I've got lots of work. Looking for an engine or toolroom lathe and there's a few on CL that look promising. Might come down to what comes with the most tooling ready to run. I've always wanted an HLVH, but a 10EE is something I think I could live with... Jon

Nov 03, 2010 62 Replies

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Ignoramus26353 15 years ago

John, then it would seem that a drive like that, in a 10EE monarch, should be more or less perfect for the job? Am I wrong?

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John 15 years ago

Yup, all you need to do is add a tach generator so you have better speed control even though it would work without the tach. All the field generating ckts are in the drive. The most critical is field loss detection. Brush type DC motors are not that maintenance intensive. you check the brushes once in a while and replace when necessary,blow out the carbon, usually with about five years of continuous use. As far as alignment, you only have to set the field current as stamped on the motor and set the crossover at the base speed of the motor as stamped on the motor tag the crossover being when the armature current is at the max and the field current is reduced to further increase the speed of the motor.

John

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