Brake connection for stepper motor

Dep · 22 Jan 2021, 16:30

How can a permanent brake be connected?

I need to supply power to the solenoid before the steppers starts moving (Z motors).

Is it possible?

Phaedrux · 22 Jan 2021, 20:56

Yes, if you do a forum search you will find some examples of brakes being used on the z axis.

Dep · 25 Jan 2021, 12:05

@Phaedrux I searched the forum and found nothing. Can you provide a link?

I understand that I can insert brake release commands into the homing files. But maybe there are standard functions for the brake?

Phaedrux · 25 Jan 2021, 18:22

In that case best provide some more details.

What is the configuration of your Z axis stage?
What solenoids are you using?
What Z motors?
Can you already control the solenoids?
How are things wired?
Firmware version?
Duet board?

Tell us what you have to work with and how far you've got.

Phaedrux · 25 Jan 2021, 18:23

searching for the work brake gives these results: https://forum.duet3d.com/search?term=brake&in=titles

Might be a starting point in there?

Dep · 28 Jan 2021, 16:45

@Phaedrux Thank you, I unfortunately did not find the answer to my question in the search.

I am planning to use a NEMA23 motor (with gear), this one

Here is a permanent brake that is released when power is applied to the solenoid.

The printer has 4 Z motors connected to the Duet 3 board, each to its own driver.

I want to connect the brake power to the bed heater on the Duet3 board.

The question is, is it possible to somehow turn on the power to the solenoid when the Z motors are activated?

Phaedrux · 28 Jan 2021, 20:07

Well if you can provide some more information on the solenoids we might be able to come up with a way to control them. Perhaps it could be scripted with gcode commands depending on how they are setup so that they are active or not when necessary.

Dep · 30 Jan 2021, 14:38

@Phaedrux The brake is permanent. That is, if there is no power on the solenoid, then the brake is on.

When power is applied, the brake is released. The power supply is 24 volts, the same as on the motherboard.

All I need to do is turn on the power before the Z motors turn on. Is there such a possibility?

If not then I use the M42 command inside homez.g

But if there is such a function, then I would like to use it.