When you turn the shaft of a stepper motor, it acts like a generator and sends voltage back into the controller.
You could cause damage by doing that.
You could cause damage by doing that.
That should not being happening regardless. I've turned my Z axis by hand or moved the gantry by hand and never had that issue. Why would the rotary be any different?Ger, 4D and David,
I initially was turning the chuck to make sure my stock was centered in the jaws and at that time heard the dust collector momentarily turn on. I could hear a relay clicking in the controller as I turned the axis. I completely removed power from the system and when I turned the axis I saw LEDs on the back of the controller light up and the cooling fan spin. Obviously, the stepper motor is inducing a current in the controller causing odd behavior. Isn't electricity fun? I'll be careful not to turn it any more than I have to when it's off.
Jay
The rotary axis chuck is belt driven, stepped down for more torque. A spin of the chuck spins the rotary stepper far more than a direct spin of any other stepper would. It doesn't surprise me that this action would feedback to the controller more current than spinning the Z axis stepper by hand.That should not being happening regardless. I've turned my Z axis by hand or moved the gantry by hand and never had that issue. Why would the rotary be any different?
Still makes no sense to me. The stepper motor is connected to the stepper driver, not the relay that controls the vac, so wouldn't any energy be absorbed in the driver circuit? Can anyone else who has a Probotix machine AND a rotary confirm that this happens with their controller?The rotary axis chuck is belt driven, stepped down for more torque. A spin of the chuck spins the rotary stepper far more than a direct spin of any other stepper would. It doesn't surprise me that this action would feedback to the controller more current than spinning the Z axis stepper by hand.
4D