Posts made by Abdul Lutfi

@dc42:

It's not usual to run stepper motors at their full rated current, because they get very hot if you do. A maximum of 80 to 85% is more usual.

The current firmware limit of 2.4A would be 80% of your 3A motor rating, which may be as high as you want to go anyway. Alternatively, are there any Nema 23 motors with a slightly lower current rating that would meet your requirements? I use 2.8A 56mm long Nema 23 motors for firmware and Duet testing.

I don't know actually…...
Usually a cartesian printer will have the X-axis (Extruders) riding on a Z-axis (Up-down). And the bed running along the Y-axis.

Mine is X-axis (Extruders) riding on a Z-axis (Up-down) running along the Y-axis.
So that means the bed is stationary. The Whole moving Gantry is really heavy considering all parts are machined aluminum and having a 40w laser tube attached.
The Whole Gantry will run along the Y-Axis using ballscrews, powered by 2 Nema 23, one on each side.

I'm looking at 115mm long Nema 23 3A. each.
Is that Overkill?

btw, I really wish I could share with you a rendering of it (uploading a picture)...... how do I do it?

@ampex_fhm:

I'm not sure if the steppers can be configured beyond their rated amperage. I would suggest you invest in external stepper drivers instead. This is probably going to be cheaper than cooking up a watercooling solution for the TMCs, too.

I have looked around the forum. It looks so daunting and difficult configuring the firmware and all others…....

I'm actually designing a 3D Printer cum Laser Cutter.

Idex each with dual extruders. Hence 6 Nema17 and 4 Heater (6? in future)
Z-axis is powered by 2 Nema23 rated 2A.
Y-axis is powered by 2 Nema23 rated 3A.

Duet3D is THE only board that can fulfill my hardware requirements. But I'm just troubled by the difficulty that may come with needing External Drivers......

Can I run the built in TMC 2660 stepper drivers of the Duet controller boards at 3A beyond their maximum of 2.8A if they are actively water cooled?

Hello!

I had a bit of confusion on which one to use. Thank You so Much of the Quick Reply!!!

I will need help in configuration soon…. Anyways, Many thanks for enlightening me.

Many Thanks,
Abdul Lutfi

Hello All!

I need help. I'm designing a 3D printer and looking at the Duet3d controller board.

First:

The 3D printer I'm making will need make use of nema 23 motors for both the Y-axis (forward and backward) and Z-axis (up and down).
For each axis stated above, two stepper motors are needed all of which having current rating more than internal drivers can handle.

Second:

It will have two independent X-carriages. each carriage will be a dual extruder system.

Though the designing stage is still not complete, I will need help.
Using more extruder means having to use the duex 2 or 5. But I need the 50pin expansion to route Pulse and Direction signal wires to the 4 external drivers for the Y-axis and Z-axis.

Is there a way for me to do so?

Many Thanks in advanced!
Abdul Lutfi
abdul.lutfi146@gmail.com