Wiring Unidrive M100 VFD to MESA 7i76e

Hello,

I am trying to connect the original VFD that came with my milling machine to my 7i76e. Previously I borrowed my Huanyang VFD from my other mill to get things going, but the M100 has a somewhat different wiring requirement ( here's a link to the quick start / wiring ).

M100 Wiring Mode


7i76e Wiring Mode


If i connect ENA+ to PIN9, ENA- to PIN11 and short PIN9 & PIN12 or PIN9 & PIN13 it starts spinning forward/reverse.
I can't figure out how get a proper DIR+/DIR- connection to PIN12 & PIN13.

My last thought was using a relais, and wire NC=PIN12 (FOR), NO=PIN13 (REV) and use ENA- as COM.
I just don't know how to trigger the relais for either FOR or REV with DIR+ or DIR- then [it's late, i'm tired and i'm not an electronics expert :-/]

Anybody has a general idea for me on how to continue?

Thanks & best regards,
Pierre

Looks like PR11 set to 2 will set the drive to ENABLE/DIRECTION mode

Good find! I'll check that out later today. Also found this helpful wiring diagram today, so I may be able to figure it out,

Thanks to both you, I think i figured it out mentally. I also figured it out as it is, with two relais.

Will change the Parameter to 2 later, I guess I'll have to wire it like:

- SPIN ENA+ & SPIN DIR+ to T9
- SPIN ENA- to T11 & T12
- SPIN DIR- to T13

This way SPIN ENA closes enable & run when running and SPIN DIR closed is forward, open is reverse?
I'll later route the T9 to T11 separately through my security relais, so the spindle stops when i hit the ESTOP.

All right, that works flawlessly. Thanks for the hint to PR11!