Not "similar". The model numbers are different, but if you look at their web sites, it is obvious that a number of their models are the exact same unit with a different label. Copley has the 412 series of velocity servo amps, with tachometer input. I don't recall the AMC number.
Jon
You have to "hot wire" the commutation inputs that would normally be provided by the Hall sensors on a brushless motor. This sets it to drive two of the 3 phase outputs and leave the 3rd one off. There should be a section in the manual for "operation of brush motors". Of course this puts all the load on 4 of the 6 power transistors in the servo amp.
Jon
Any "six step" drive that takes a Hall sensor signal from the motor can be set to run brush motors. Drives that run in sinusoidal commutation are another story, and you are generally right about them. If it has no input for "Hall" or "commutation" signals, then it probably cannot do this.
Jon
Brush type motors are generally easier to drive, since the brushes do the commutation. The amp just has to be configured to only drive one phase: the one you've hooked the motor to. According to that link, AMC provides a "phase setting switch" to do this. Amps without such a switch might still be foolable into driving a brush type motor, by connecting appropriately-chosen resistors to the hall sensor inputs. But that would take some research into exactly what voltages the amp expects on those inputs, and/or some trial and error; and it wouldn't work if the amp were too clever about interpreting those inputs -- if, say, it detected the lack of apparent motion, decided something was wrong, and shut down.
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