The only purpose of a "voltage rating" is to give an idea of what is the maximum power supply voltage the motor should be run at.
The ultimate limit is the motor case temperature. This limit will be approached (85C) when the supply voltage is around 20 times the motor's rated voltage.
This is an empirical number based on lab tests; it may not exactly apply to your motor but it will be close.
To simplify, the higher the supply voltage the greater the the power output from the motor. However, the higher the supply voltage the hotter the motor will be. Again, the limit to all this is the rated maximum temp of the motor.
The overdrive ratio (20 times the motor's rated voltage) is based on the unipolar voltage. I based it on that since most motors are 6-wire and I thought that would be the most helpful for the majority of people.
When I get the time (when the G2002 firmware is ready for prime time), I will run a new series of detailed lab tests on the new octagonal and cruciform motors. My data is based on the old, round motors. These new tests will take frame-size into account as well.
Until then, figure your motor as being 1.84V in parallel (unipolar I*R) and 3.68V in series (twice the unipolar value). This yeilds 36.8VDC and 73.6VDC using the present 20:1 ratio for max supply voltage.
Mind that PacSci rates their motors at a 65V max limit. PacSci is a class act that never indulges in specmanship. This limit is to guarantee the windings will not arc at max temp and destroy a drive in the process. PacSci motors are the Rolls-Royces of step motors; they give realist specs and limits most other mfgs won't to make their motors look better then they are. Observe that limit.
Mariss  |