Controle nema 23 brake

[Amagatth]

@droftarts i change my 24 V now the board is on 24V ( 48V before) so i can direct command brake with out 9 in 24V

and i delet the line no pb

[dc42]

@Amagatth Brake PWM is implemented on the EXP1HCL and on the M23CL. I have used PWM to run a 24V brake with 48V supply. It appears to work properly although the brake makes a slight hum at the PWM frequency.

Which board are you using to drive the motor and brake?

[Amagatth]

@dc42 Its ok i put my card in 24 V i use a duet 3 6hc + 3hc with brake on duet 6hc and motor on 6hc

[droftarts]

@Amagatth And the brake is working now?

Edit:
I've updated the M569.7 entry to say:

Vnn (optional, supported in RRF 3.5 and later on EXP1HCL and M23CL that accept 48V VIN) Brake voltage.

And added a second example:

M569.7 P0.2 C"out9" S20 ; driver 2 on mainboard uses port out9 to control the brake, with 20ms delay

Ian

[Amagatth]

@droftarts no if i make a m18 moto are disable but dont active 24 v for brake

[droftarts]

@Amagatth okay, @dc42 has it on his list to fix. See https://github.com/Duet3D/RepRapFirmware/issues/1023

Ian

dc42 created this issue in Duet3D/RepRapFirmware

closed M17 doesn't re-engage motor brake #1023

[Amagatth]

@droftarts if i understand this post he say effect is on duet 3 expansion board ... i have my motor on the duet 3 6hc

[droftarts]

@Amagatth he added code to enable PWM on 1HCL and M23CL. From what I understand, the code has broken turning off motor and enabling brake on other boards, like your 6HC, and the 6XD. But I see from the other thread there is a temporary fix from @timschneider that works for you.

Ian

[Amagatth]

@droftarts i apply the new .bin file and it work perfectly !

[dc42]

I have now implemented a fix (the same as Tim's fix) for this issue in the 3.5-dev and 3.6-dev source code, so it will be included in the next builds. I can provide temporary 3.5.2+1 builds if anyone needs them.