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I don't know that I can help with the motor wiring other than to reveal how I wire mine to get the motor to spin. If anyone's interested, email me and I'll write more.

I can run my motor off of the Copley 503 using a 48vdc power supply rated at 3 amps, although the driver can drive more (and of course, consume more) than the supply I'm using. For testing, I use a potentiometer, a couple of AA batteries, a switch, and some wiring to provide a reference from -1.5vdc to +1.5vdc across J2-10 and J2-11 ('Ref -' and 'Ref +') on the Copley 503. When I measure, I find that +0.65vdc across the reference inputs will get the motor going full speed in one direction, and -0.65vdc will get it going full speed in the other direction. With the voltage on the reference inputs at 0, the motor doesn't spin, of course. 

 

The encoder on my version is a Renco 77822-033 and has a DB9-male connector. It pins out thusly:

 1 - red - +5vdc input

2 - yellow - I output

3 - blue - Q output

4 - orange - index output

5 - brown - *index output

6 - no connect

7 - white - *I output

8 - green - *Q output

9 - black - ground

 
 The signals shown above with the "*" in front of them are the inverse of the corresponding signal without the "*". The outputs are 0-5vdc, and for example, whenever the 'Q output' is at +5vdc, the '*Q output' will be at 0vdc.
 
 I looked at mine with an analog o'scope, and it appears (from my very rough calculations) that there are around 831 pulses on I and Q per index pulse. The index pulse occurs once per revolution of the motor.
 
 I can run my motor off of the Copley 503 using a 48vdc power supply rated at 3 amps, although the driver can drive more (and of course, consume more) than the supply I'm using. For testing, I use a potentiometer, a couple of AA batteries, a switch, and some wiring to provide a reference from -1.5vdc to +1.5vdc across J2-10 and J2-11 ('Ref -' and 'Ref +') on the Copley 503. When I measure, I find that +0.65vdc across the reference inputs will get the motor going full speed in one direction, and -0.65vdc will get it going full speed in the other direction. With the voltage on the reference inputs at 0, the motor doesn't spin, of course.

I looked at the signals driving the motor, and just as you heard from someone else, they are trapezoidal. Basically, the drive on the U,V, and W outputs from the amp are made to kind of emulate 3-phase AC. So yeah, all evidence suggests the motors are brushless DC motors. (Maybe someone else can explain how BLDC motors are different from permanent magnet AC (PMAC) motors. Some think the two terms are inter-changeable.)