Brakes.
- jeffie-3
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27 Jan 2016 21:23 #69168
by jeffie-3
Brakes. was created by jeffie-3
Over time i have picked up a few servo motors. All in hopes of repairing a mill I have. I have noticed some have brakes and some don't. Does the Linux CNC support a brake on the servo? Is it something needed?
Thanks,
Jeff
Thanks,
Jeff
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- PCW
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27 Jan 2016 21:37 - 27 Jan 2016 21:37 #69169
by PCW
Replied by PCW on topic Brakes.
Brakes are often needed for the Z Axis of VMCs so the
Z axis doesn't coast down into the table at power off/servo disable
Z axis doesn't coast down into the table at power off/servo disable
Last edit: 27 Jan 2016 21:37 by PCW.
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- jtc
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27 Jan 2016 21:39 #69170
by jtc
Replied by jtc on topic Brakes.
You can use the signal "machine-is-enabled" to release the servo brake. But normally the brake is connected to the servo drive, when the drive is enabled it releases the brake.Over time i have picked up a few servo motors. All in hopes of repairing a mill I have. I have noticed some have brakes and some don't. Does the Linux CNC support a brake on the servo? Is it something needed?
Thanks,
Jeff
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28 Jan 2016 18:56 #69208
by jeffie-3
Replied by jeffie-3 on topic Brakes.
The couple of motors I have. Have separate wires coming off the brake.
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29 Jan 2016 14:41 #69233
by jeffie-3
So the brakes only engage when the machine is "Parked" and or turned off? So if I am making a 4 inch cut on the X axis. The Y and Z are held by the motor holding position and not by engaging the brake?
Replied by jeffie-3 on topic Brakes.
You can use the signal "machine-is-enabled" to release the servo brake. But normally the brake is connected to the servo drive, when the drive is enabled it releases the brake.Over time i have picked up a few servo motors. All in hopes of repairing a mill I have. I have noticed some have brakes and some don't. Does the Linux CNC support a brake on the servo? Is it something needed?
Thanks,
Jeff
So the brakes only engage when the machine is "Parked" and or turned off? So if I am making a 4 inch cut on the X axis. The Y and Z are held by the motor holding position and not by engaging the brake?
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29 Jan 2016 21:12 #69253
by jtc
This is the typical situation, so yes.
Replied by jtc on topic Brakes.
You can use the signal "machine-is-enabled" to release the servo brake. But normally the brake is connected to the servo drive, when the drive is enabled it releases the brake.Over time i have picked up a few servo motors. All in hopes of repairing a mill I have. I have noticed some have brakes and some don't. Does the Linux CNC support a brake on the servo? Is it something needed?
Thanks,
Jeff
So the brakes only engage when the machine is "Parked" and or turned off? So if I am making a 4 inch cut on the X axis. The Y and Z are held by the motor holding position and not by engaging the brake?
This is the typical situation, so yes.
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