@o_lampe

That is a smart solution, however I have a short demo in a few days and need something temporary to achieve a small print. Because the motor can typically hold its position for 5-10 seconds that should provide enough time to use M571. Will M571 send a signal even while travelling/not extruding during a layer?

I am building a large format FDM printer and am using Clearpath servos with belts to move each axis. The Z motor does not have enough holding torque to keep the build plate elevated, nor does the inline brake. I recently added a piston to counterbalance the build plate weight, which allowed the motor to move and hold in place occasionally (had to keep adjusting piston force up or down).

The brake is connected via 24v mosfet to the servo's feedback circuit which is setup in "servo on" mode. The brake is always able to hold the build plate now, but only activates when the servo is disabled, which is not useful during operation.

Without spending more money on a high flow air system for the piston or buying a new motor or gearbox, how can I always activate the brake between every Z move operation?

Thanks!