Emcoturn 120 lathe retrofit

graphic for direct wire connection. I may still do the rs-485 later since I bought the hardware but this is easier for me to wrap my head around

I connected the VFD and programmed it per the previous posts. The fwd/rev is working perfectly, but enable is not working. It may be the Linuxcnc tool, Im not sure. I tried to enable it by shorting the DCM/D2 and that does change the VFD to run state. I left them crossed and used the spindle tool to try to turn the spindle and it errored the VFD. I think the problem is the spindle tool starts at 0 rpm. You set the direction then have to hit the (+) button to increase speed from 0, this causes the VFD to overload. I assume this is what blew out the Chinese VFD. SO obviously I dont want to do this anymore. Is there another tool I can add that will set the speed then direction then so go? I thinks thats what I need to do. If there is a gcode/mcode series I could enter in the midi line that would be OK too.

I think you need to set the "ramp up" to at least 5 to 10 seconds, since it has a lot of weight to move. I had it set at 7 for a drill with gear reduction, otherwise it would overload always at start.
Tom

update.

by typing s1000, m3 I get nothing

I jumped DCM/D12 (VFD start/stop)

then s1000 m3 I get 1000rpm fwd, m5 stop, m4 1000 reverse.

so everything is working except enable signal from 7i76e. I assume it is a programming issue for the HAL pin. Any suggestions?

If the analog output works, enable is asserted
Another forum poster had a problem with the 8 pin plug on a a 7I76E
you might check continuity through the plug.

We have not seen any problems we these before but we may have a bad lot

let me check again