6XD - AC Servo drive (single-ended and differential signal)

Zseven

@Zdenko Can you upload a picture of how you installed the resistors ?

Zdenko

It is a bit messy as all of it is outside of the encolure now, there are two resistors, one for STEP and one for DIR, I soldered them on the wire terminals and insert them in a connector, you will need to put some shrinking tube so that you don't short the pins/wires.

@dc42 Hi,

I received Duet 3 Mini5+ and Duet 3 Mini 2+, I managed to get it working without any issues for now, first I was super scared as the conveyor width stepper was making super weird noise then I researched a bit and found out that I needed this:

M569 P05.0 D3 H50 v50 S0; Conveyor_Width
M915 P05.0 T50

After adjustment, the motor is working well, no more weird noises, now I need to finish 3 "Zones" of the conveyor, and sensors and put all the electronics in the Industrial enclosure, this should all be easy.

https://www.youtube.com/watch?v=PELvjKmPtk0&feature=youtu.be

This combination of Duet 3 Mini5+,Duet 3 Mini 2+,6XD and 2x3HCs, was a super nice decision, thank you.

Zdenko,

Zseven

@Zdenko Thank you very much !

Zseven

Hello ,
I have this servo controller, can I connect it directly to the 6Xd ? Because that stands for Puls and Signal max 3.6V.

Zseven

Or is it better to go via open-collector ?

dc42

@Zseven sadly there is no standard interface for external drivers or servo drives. There are at least 4 different ones:

Opto isolated inputs requiring 5V input at 5 to 10mA, intended to be driven by open collector/open drain outputs.
Standard 3V differential inputs as used by RS422/RS485 systems.
Differential inputs but requiring more than 3V drive (e.g. Clearpath servos need 5V).
As #1 but requiting 24V drive, intended to be driven by PLCs.

The most common is #1 so Duet 6XD supports it directly. Duet 1XD supports #1 and #3, and will generally work with #2 as well because the inputs don't normally mind being overdriven a little (if they do then series resistors can be added).

From the information you posted, it appears to me that your drivers support #2 and #4. The 6XD doesn't support either directly, because the open drain outputs are rated to 5V not 24V.

We made provision on the 6XD to add a daughter board to generate different signal levels, but we haven't produced any such daughter boards yet.

Zseven

@dc42 What other information do you need?

Can't I just convert the 5v to 3v with a 10ohm resistor?

I have a 6xd board ..that is supposed to drive xyz with servo motors .

I have chosen these faithfully as they have a save torque off function. So that the drives can offer when the door is open.

Render from the printer that ist in work

Zseven

@dc42

Here is the plan from the documentation

Zseven

@dc42

I have spoken to the manufacturer on the phone.
The documentation is wrong. They say it has to be at least 2.8-3.6 volts and a maximum of 5 volts.

p_vnct

@Zdenko

hi,

I am trying to use the same AC servo drive and motor, but i am a bit lost with the motion controller settings.
Could you let me know what's your's.
I am trying to connect this using a 1xd formelly used to run an external nema driver but i am here lost with AC servo motors.
For now it is wired in single ended mode, would you recommend differential mode ?

thanks for the help !