Re: [CAD_CAM_EDM_DRO] Setco spindle wiring?

Tim Goldstein wrote:

> I just got a 3 phase Setco 6103 3 phase spindle and I am trying to figure
> out how to hook it up. It is rated as 230/460v 3phase. When I look at the
> wires coming out of the motor into the junction box there are 2 bundles. One
> has 5 wires and the other has 4. Anyone have any idea how I hook this up for
> 230 v usage?

9 wires pretty much pins down the winding pattern, but it doesn't help you
identify which one is which.

These motors are wired with one set of windings all brought out, so that's
6 wires - 2 ends of each of 3 coils. The other set of windings only brings
out 3 wires, and the other ends of the coils are all connected together
internally.

For 460 V operation, one of each of the second windings is connected to
one end of one of the first windings. the other end of the first winding is
the
line terminal. So, if you see 3 pairs of wires connected together and
taped, and 3 wires brought out for ecternal connection, that is set for
460 V.

For 230 V, the wires that were the line connection are still assigned to
that, but the wire to the second winding is also connected there.
the wires that were from the first winding and connected to the second
should all be tied together and insulated.

So, I can tell you how to convert from one to the other, if the connections
are made. if you just have 9 wires, not connected or identified at all,
you have a problem. there is a way to identify which wires go to which
coils, so you can identify all the A phase wires, etc. but it is pretty
difficult.

Jon