Z-Motors don't drive powered by external stepper driver
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Hi,
I see a few things that I believe need fixing.
As I recall the Duet 2 WiFi does not support any values other than 16 in M350.
And you don't include external drives there either.
So I think you need to change it to M350 X16 Y16 I1
Again as I recall when you have drive mapping like Y1:4 or Z5:6:7:8 you only using single values in M92, M566, M203, M201, M906.
And you don't include external drivers in M906.
So I think you would use the following:
M92 X286.72 Y204.80 Z576.00 E420.00 ; set steps per mm M566 X900.00 Y900.00 Z12.00 E120.00 ; set maximum instantaneous speed changes (mm/min) M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; set maximum speeds (mm/min) M201 X500.00 Y500.00 Z20.00 E250.00 ; set accelerations (mm/s^2) M906 X1800 Y1800 E800 I30
At least that is how my configuration is setup and the external drives work.
The only other change you might want to try is the T values in the M569 commands.
The values suggested to me were T2:2:10:10 since I had no specifications for my external drivers.
If you have the specs and you know your current values are correct of course you should leave them as they are.
Frederick
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Hi Frederick,
Thanks for your help.
I changed the M92, M566, M203, M201, M906 to single values, as you said.
But the Z-Motors are still not running.
Do you have another Idea?
Many Thanks!
Lars -
@Inno-3D said in Z-Motors don't drive powered by external stepper driver:
Hi Frederick,
Thanks for your help.
I changed the M92, M566, M203, M201, M906 to single values, as you said.
But the Z-Motors are still not running.
Do you have another Idea?
Many Thanks!
LarsI just noticed the printer dimensions - that is huge!
Anyway have the Z steppers ever worked?
Frederick
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Yes before the ampere of the one external stepper driver was changed while the system was running. It was changed to 4 ampere.
I changed the motor after I saw, that the motor was damaged and changed the ampere to 1.5.
But after that none of the 4 Motors will drive again.
Thanks
Lars -
@Inno-3D said in Z-Motors don't drive powered by external stepper driver:
Yes before the ampere of the one external stepper driver was changed while the system was running. It was changed to 4 ampere.
I changed the motor after I saw, that the motor was damaged and changed the ampere to 1.5.
But after that none of the 4 Motors will drive again.
Thanks
LarsOn my external driver I have to set the active state of the Enable input to match the active state of the Enable output from the Duet.
Perhaps that setting in your driver has changed?
Frederick
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I haven't this setting. I can only change the ampere and the microstepping.
Thanks
Lars -
@Inno-3D said in Z-Motors don't drive powered by external stepper driver:
I haven't this setting. I can only change the ampere and the microstepping.
Thanks
LarsSo you are not using the enable inputs on the driver?
Frederick
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I'm sorry that I haven't answered.
Of course I'm using the enable inputs. That was my fault. Can I check there, if they work?
Lars
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@Inno-3D said in Z-Motors don't drive powered by external stepper driver:
I'm sorry that I haven't answered.
Of course I'm using the enable inputs. That was my fault. Can I check there, if they work?
Lars
The examples given in the driver docs show connecting the controller (the Duet) to the driver via Open Collector outputs and Open Emitter outputs.
The docs also mention a logic high as being 4 to 5 volts.
The Duet breakout board provides 3.6 volt differential signals.
If the driver docs are accurate the 3.6 volt signals from the breakout board are not going to provide the needed voltage for a driver logic one.
How do you have the drivers wired to the breakout board?
Frederick
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I use Leadshine D808 stepper drivers and I had a problem of the pulselength of my signals. They required to be a minimum of 5.0 us. Right now you have M569 P* T2.5:2.5:5:5, you could try that. It also recommends that in the manual of your stepper driver: https://www.damencnc.com/userdata/file/1750-1_DM556_datasheet.pdf
When using external stepper drivers, the M305 does not do anything since you use the dipswitches on your driver.
what is your wiring setup, do you have power-sourcing or sinking? I have all my + pins (EN+, DIR+, PUL+) powered on 5V, where I use the - pins for pulses.
Did you check the fuses on your board?
I would really like to see a picture of your printer if possible! I have one of X900 Y1400 Z400 and thought that was already massive!
I also use the expansion breakout board and that gives me 3.3V but using the 5V setup as previously explained, I can change the difference in voltage which makes a switch.