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Author Topic: Six wire motor wiring  (Read 2886 times)

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Six wire motor wiring
« on: January 28, 2008, 04:31:39 PM »

I am retrofitting a Shizouka cnc knee mill with a Bandit controller
which has some 6 wire steppers on it and I am trying to figure out
whether I should wire them in full or half winding. The drives that
were on there have inputs for A1, A2, Acommon, B1, B2, Bcommon, so I
can't tell from the previous wiring scheme. I have 203V's. Looking at
the schematic for the old drives, for each winding, there is a diode
between the common and each side of the winding. The diagram shows
the diode inside a dotted line rectangle with a transistor as well.

The rated amperage on the motors is 3.1 and the rated voltage is 4.5 (I
think).  The power supply on the machine is 45 Volts.

Any ideas?



Offline stirling

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Re: Six wire motor wiring
« Reply #1 on: January 30, 2008, 04:30:10 AM »
As you're about to use 203Vs, you can ignore all the stuff about your old drives - it's now irrelevant. Half winding will have half the resistance and therefore twice the current and therefore twice the power of full winding. With a 45V PS your supplying 10* the rated V - not huge but whether it's enough to give you the highest speed you require depends on the drive geometry of your mill.

Re: Six wire motor wiring
« Reply #2 on: January 30, 2008, 12:23:50 PM »

Thanks a lot.  I'm going to give half winding a shot.