Z-brake on OAK

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pascalken
Posts: 18
Joined: Fri Dec 17, 2021 6:02 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: No
Oak CNC controller: Yes
CNC Control System Serial Number: none
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Z-brake on OAK

Post by pascalken »

Is there a provision for the Z-axis brake control or should I control the brake with the drive enable signal?
cncsnw
Posts: 3763
Joined: Wed Mar 24, 2010 5:48 pm

Re: Z-brake on OAK

Post by cncsnw »

Many -- but not all -- Oak Mill PLC programs use OUT9 for Z axis brake release.

In most, it simply echoes the CNC12 drive enable output.

If you are using drives such as Yaskawa Sigma or Delta ASDA, which can provide a brake-release request to pin 17 of the Oak axis header (yellow wire in factory cables), then you can make your PLC program release the brake in response to "!Axis3StatusBRAKE" instead, so the brake is released whenever the drive says it is enabled.

All that said, if your drives have provision for switching an external circuit in response to their enabled state, then you could just as well use that, and save a PLC output.
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