Emco Mentor Mill conversion

[Ross77]

Thanks Swarfing and John. I always seem to miss the easy solutions, although I was hoping to make all mods reversible. Didnt want to hack up something that I might be able to sell. Are 415v motors for these machines worth anything?

I'll have another look and see if the end plate will come off without destroying the motor, that would be the best out come.

Thanks again

[Swarfing]

If it wires 230 - 240v delta then just wack a vfd on it and away you go :-)

[Ross77]

If it wires 230 - 240v delta then just wack a vfd on it and away you go :-)

How can I tell? motor plate says 440v and there isnt the normal terminal box for changing star or dlta configurations. will a 440v motor run on 240v not be half as slow?

Cheers

[Lee Roberts]

Nice to see you back Ross, was reading some of your threads the other day and said to myself "i wonder what hes upto these days".

.Me

[Swarfing]

If there is no obvious opening or cap to reconfigure then maybe not? google mot or details and see what comes up.

[GEOFFREY]

I think you probably can still reconfigure it , but you will need to find the star point on the windings and the rewire as delta. G.

[m_c]

Whether the motor can be altered to run on 240V depends on if it's wired as Star or Delta 440V.

It's a case of carefully dismantling the motor, and seeing where and how the coils are connected. If all the coil wires ultimately end up with 3 going to the power feed, and 3 joined together in at one point, it can be changed to run on 240V. However, if each of the three going in split to two, then it's already in delta and can't be changed.

[Ross77]

Thanks Lee, good to be back. Been converting a barn for the last 3 years and still not quite finished but need some down time to try and keep me sane.

Progress will be slow but I have a lot planned for this mill, essentially it will be full cnc but with a Arduino (or similar micro processor) to monitor speed, axis DRO and act as a standalone controller for quick manual use.