Duet 3 1XD board Bed leveling problem
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Yes the brakes are normally engaged and we supply power for release them
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In fact I made tests on my development machine because a customer already has a big machine with external stepper drivers that's run with Repetier firmware and he though to switch to Duet3 and RRF3. As the Motors need 6A and more and brakes (like in my development machine). It is not possible to use the Duet3 drivers.
You think there is no possibility to use external drivers for Z and ZProbe ? -
@Philippe71 said in Duet 3 1XD board Bed leveling problem:
Yes the brakes are normally engaged and we supply power for release them
Currently there is no facility to de-energise the brake solenoids on an emergency stop, but we could add that to the firmware.
@Philippe71 said in Duet 3 1XD board Bed leveling problem:
In fact I made tests on my development machine because a customer already has a big machine with external stepper drivers that's run with Repetier firmware and he though to switch to Duet3 and RRF3. As the Motors need 6A and more and brakes (like in my development machine). It is not possible to use the Duet3 drivers.
You think there is no possibility to use external drivers for Z and ZProbe ?Do the motors really need more than 6A peak current? The drivers on Duet 3 supply up to 6.3A peak. It's rare to run stepper motors at their full rated current, because they get very hot if you do.
Did you check what timing the external stepper drivers need, and adjust the M569 T parameter for them accordingly? Duet 3 can generate step pulses very fast, and although we slow them down to 2.7us for external drivers by default, this isn't enough for some external drivers. That's why we provide the M569 T parameter.
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Thanks, it is Nema 42... Data sheet said 6A
The datasheet of external driver said :
For reliable response, the pulse width should be greater than 2.5μs
On the 1XD board, does it means the M569 T parameter is automatically set to 2.7µs ?
In that case it should work no ? or do I have to setup M569 T2.5 ?
