1XD Closed Loop Servo Setup

ShaunCro

@shauncro I see my enable motor in the pic is active high, this should be set to low.

But what I find weird, is I only get movement for a 1/4 of the motor, so 50mm to -250mm if I disable motors and turn it to the next pole, I can move with in that pole, but the numbers are different. 50-350 etc currently have my Gear numerator set 1:1 with the denominator. Motor movement is slow though.

code7

@alankilian Thanks for double checking. Everything is connected properly.

With everything connected or disconnected I am still receiving the blinking green light with no errors. I'm going to try a simpler motor/driver for now and I may come back to the Leadshine system later.

@shauncro Thanks for the details. I tested your config.g and servo driver settings with my Leadshine setup and am not getting any movement. If I come back to this setup and have success I'll let you know.

alankilian

@code7 said in 1XD Closed Loop Servo Setup:

Thanks for double checking. Everything is connected properly.
With everything connected or disconnected I am still receiving the blinking green light with no errors. I'm going to try a simpler motor/driver for now and I may come back to the Leadshine system later

If you want to send one motor driver and one motor to me I'll hook it up and getting working for you and send it back. No charge for postage or anything.

I only have a Duet2, but getting it working on that system will certainly get it working on your system also.

I've done this for other people in the past and have had success.

I'm in Cambridge, MA so you can estimate postage.

Let me know if you want to try this to get you a jumpstart on getting this working.

code7

That's really kind @alankilian. I'll let you know if I decide to try this again.

alankilian

@code7 OK, I've got your system setup on my bench.

I can connect using the Leadshine software on a Windows-10 computer using a USB-to-RS232 and your cable and I can read values from the stepper driver and I can command motion and the motor turns.

I also hooked up a pulse-generator and I can enable the stepper driver and the motor turns when I generate step signals.

So...... I don't have a Duet-3 so I can't hook up the 1XD board you sent, but I'll hook up my Duet2 and see if I can get the motor to move using GCODE from the Duet2.

alankilian

@code7 I now have the Duet controlling the stepper motor through axis U driver 5 step/direction outputs.

I'll go back through this thread and see what I have hooked up differently than you did.

I really just hooked:

Hooked PUL+ to Duet2 Step
Hooked PUL- to Duet2 Ground
Hooked DIR+ to Duet2 Direction
Hooked DIR-- to Duet2 Ground
Hooked ENA to Leadshine ground
Hooked the COM+ to leadshine 24 Volts DC

I'll read some more and get back to you.

alankilian

@code7 said in 1XD Closed Loop Servo Setup:

With everything connected or disconnected I am still receiving the blinking green light with no errors.
...
Leadshine contacted me and recommended the Differential Connection option wired as follows:

The blinking green light means the Leadshine motor driver is not enabled.
The green light needs to be solid on when the driver is enabled.

You absolutely must NOT connect EN+ to COM-IN since COM-IN is between 24 and 70 Volts! You might have dodged a smoke-event because you may not have had a common ground between the 1XD and the Leadshine power supply.

I'll look in to how to hook up the enable properly and write again.

coseng

I know you may have different hardware, but I have 2 Clearpath SDSK servo/steppers running from Duet step and direction outputs and they are providing awesome acceleration, no vibration and near zero noise at any speed.

They are a bit expensive and the specs are quite overkill, but they are highly recommended.

code7

@alankilian Thanks for the update. Is there any other straightforward way to test the LeadShine encoder on the Duet2 or would you need a Duet3?

code7

@coseng said in 1XD Closed Loop Servo Setup:

They

Thanks - I'll keep this in mind for future projects.

alankilian

@code7 Everything works perfectly using my Duet2.

I think you just had the enable signal hooked up incorrectly.

Hook COM+ from the Leadshine to +5 Volts on the 1XD
Hook DI3/ENA from the Leadshine to the enable output on the 1XD

After that, you should be ready to roll.

I'll ship everything back to you soon.

code7

@alankilian I sure appreciate your help on this. Thanks