Lagunmatic 3516-SX Retrofit

Good news - I found the problem and fixed it! No surprise, it was a wiring error.

Once I started disconnecting wires and searching for the source of the problem I found it pretty quick. Turns out the wire I had plugged into TB2 pin 1 was mistakenly connected to the Common line for the control panel buttons. Dumb, I know. Moving that 1 wire from pin 1 to pin 8 fixed everything.

I fixed one other 24v connection and everything works great so far - I can jog all axes, tuned the Z, all limit/home switches work, Machine On works as expected, etc.

One piece of bad news is that I think the Outputs on TB7 may be damaged. I got intermittent signal to the Machine On relay when I first fixed everything. I was using Pin 9. I moved it to Pin 12, same problem. So I made space on TB8 and had zero problems after that. I had mentioned I thought these pins were always active, that's not true but I did get weird voltage readings as soon as Field Power was supplied.

I think I can eliminate some outputs and get by without using TB7 for now. I'm sure I'm at fault and buying a new card isn't in the budget for now.

Thanks again for everybody's help. Once I get the rest of the axes tuned I'll start looking into controlling the spindle next.

Not the most thrilling video, but feels like a big milestone:

Scored another minor victory tonight... got the spindle at least moving in open loop mode from M3 Sxxxx commands in the MDI.

I think it will take some time to get it working right however. Analog 1 is the frequency reference signal that drives the spindle, -10v to +10v. When I command M3 S1000 the 7i77 outputs 1v (max spindle speed is 10k). The VFD displays this as a percentage, which should be 10%, but shows more like 0.5%.

Once I found and maxed out the A1 gain to 1000% it registered enough signal to move.

So obviously there are some parameters that need adjusting at the VFD but I'm pretty happy tonight!

Will be back at it this weekend - haven't touched the machine since the last post in April. I really need to get the machine finished and listed for sale by the end of August...

Goals for this weekend are to figure out the spindle speed control and start looking into the tool changer. I think the Carousel component will be the way to go? I haven't looked into this at all yet but hoping it will be easier than I think it will be (wishful thinking!)

After that I need to start on updating the control panel.

The carousel component is what i used. I believe i sent you my ladder program already. It works well. The one thing i will say is be careful to make sure it's fully functional before tools loaded in it. The gearmotor that runs the geneva drive is a weak POS and i broke some gears in it the first time it jammed.

lunada wrote: The carousel component is what i used. I believe i sent you my ladder program already. It works well. The one thing i will say is be careful to make sure it's fully functional before tools loaded in it. The gearmotor that runs the geneva drive is a weak POS and i broke some gears in it the first time it jammed.

I remember you saying that! Thanks for the reminder. Your code is where I'll be starting my research