I finally was able to test the motor, and there is a problem.
The WS55-180 blinks red. With the Enable switch in one position I get repeated single blinks. In the other position I get what appears to be groups of 7.
The power supply gives 48.1vdc, and the motor windings are each about 4 ohms.
There are no hall effect wires from the motor. Do I need to do something with the terminals on the WS55-180?
Is there a list of blink codes somewhere?
Thanks.