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Gday Marcus
"Most" precision direct drive motors are to all intents and purposes just bloody big steppers with advanced microstepping mechanisms to control speed.
Depending on the design, the motors used in the ASA may actually have a holding torque ( like a std stepper ) that defaults to keep it stable when the coils are no longer energised??? Dunno, but if anyone has an ASA mount, maybe they could advise what happens if deenergised???
Ie if the clutches are left locked, and the mount isnt powered,
how much torque is reqd to make the axis rotate ( if at all )?
Andrew
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