Dyna mechtronics DM3000 lathe , mach conversion

[dazza]

thanks for the reply mc I have no experience with electronics what so ever.
my limited understanding is for things like threading I want closed loop?
should I be looking at something like this for the spindle motor
DCser004# Dc servo motor driver, closed loop controller-in Motor Driver from Industry & Business on Aliexpress.com

edited yes your right it seems they all have a built in tach,i managed to find an exploded drawing of one not quite identical,
http://www.hhrobertsmachinery.com/Ac...tor_parts.html

[Jonathan]

That driver is the right sort of thing, but the rated voltage of the motor is 140V, so you want one around that voltage. It's about 1.4kW. It looks like the big transformer might be supplying the motor - does the transformer say on it what the output voltage is? It might be supplied without a transformer... not sure.

[dazza]

thanks jon,
yes the transformers feeding the motor via various other bits not sure what the are yet, but theres no info on the transformer output theres two conversion threads on the zone they use something called a bardac 1600i board in post 53 The Dyna Myte 3000 Project - Page 5 this fella says the output of his bardac is 80vdc and doesnt notice any reduction in speed.,
I will aim to get the correct rated drive.. im still looking.
edited I came across this 160v servo driver also sold on ebay Europe,any good?
http://www.cnc4pc.com/Store/osc/prod...roducts_id=636