PWM and direction Spindle control method

[fudgtastic]

Hello,

This might be a bit fundamental to some. It took me a little longer than anticipated to figure out spindle PWM+direction control from my T41U5XBB than I was anticipating, so I wanted to make a post for posterity.

Analog speed control: wire the "0-10V" and "G" terminals of the T41U5XBB the "analog speed input" & GND terminals of the VFD.

Direction and Enable control
Key detail is that I used an opto-isolated relay control board to control the Digital Input pins on the VFD. I wired the COM terminal from the VFD to the COM positions of 2 relays on the relay module. I wired the VFD terminal corresponding to "FWD" in the VFD control to Relay 1's NO terminal. I wired the VFD terminal corresponding to "REV" in the VFD control to Relay 2's NO terminal.

I then connected the "En" terminal of T41U5XBB to IN1 of the relay module, and the "Dir" terminal of the T41U5XBB to IN1 of the relay module.

I used a 12V relay module, so I put the +12V jumper into that position.

[phil-barrett]

Thank you very much. This is great! With your permission, I will use it for a blog post (and credit you, of course).

One thing to be aware of is M4 (reverse direction) is often used while in Laser Mode so if you mount a laser along with a spindle it might be a good to not connect Rev.

[fudgtastic]

Hi Phil,You certainly may feel free to use the information for a blog post or however else may be useful. I would be glad to help take photos, provide more details parts info I have used, etc. if you need.Thank you for the warning about the laser dependency on M4. I do not have a laser planned for right now. I will note that I have one very distinct use for the reverse spindle, and that it is to (try to) integrate a RapidChange ATC magazine. This is on my list of things to do, and I will add a post in the GitHub if I am successful.Best regards,DrummondOn Feb 2, 2025, at 14:57, phil-barrett ***@***.***> wrote: Thank you very much. This is great! With your permission, I will use it for a blog post (and credit you, of course). One thing to be aware of is M4 (reverse direction) is often used while in Laser Mode so if you mount a laser along with a spindle it might be a good to not connect Rev. —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you authored the thread.Message ID: ***@***.***>