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

ok, operator error. I left out wire #6 on the adapter.

now when I turn it on it runs slow and errors the VFD. I think its the ramp up, but it just worked with the pins jumped.

update. I had set the VFD to high torque start, that was the issue. I then set it for scurve start 5sec, scurve stop 5sec and its all working great. It will start from 0 using the GUI tool and everything. So this is done I think.

Now I would like to have the encoder output displayed. I set this up using an AB with index encoder wired to the 7i76e encoder input pins but I dont know how to read it to see if it is operating properly. Any ideas?

You can use halmeter to check the encoder operation and scaling

Spindle encoders should be scaled so that 1 spindle turn reads as a feedback position change of 1.00
That is, hm2_7i76e.0.encoder.00.position should advance by 1.00 for each spindle turn

Index can be checked with halcmd (setting the index enable signal) and halmeter
(watching the index enable signal to see the it gets cleared on index detection)

PCW wrote: You can use halmeter to check the encoder operation and scaling

Spindle encoders should be scaled so that 1 spindle turn reads as a feedback position change of 1.00
That is, hm2_7i76e.0.encoder.00.position should advance by 1.00 for each spindle turn

Index can be checked with halcmd (setting the index enable signal) and halmeter
(watching the index enable signal to see the it gets cleared on index detection)

can I turn the encoder by hand or does the spindle need to be running (for enable signal)? If Im looking for the position change to be 1 on each turn sounds like it will be really fast if the spindle is running