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Messages - Yomama

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Show and Tell / Re: Cnc knee mill
« on: November 03, 2020, 02:07:59 PM »
Sorry for such a late response.

I used the machine a lot when i finished it, but never powered it back up after i moved like 2 years ago. I did put a pendant on it, which is absolutely a big plus. I even homemade a little 4th axis for it and ran a few test parts. It worked.

Advice. Make sure your communication lines are shielded and dont route anywhere near anything high voltage. The board will drop communication. Other than that, i would plug my laptop in, hide it away from any chips, and then use the touch screen. Worked pretty well. Was def nice having a big screen.

As for the mill itself, i was happy with it. Ran it for long spells unattended. It would home and limit at overtravel no problem. This was a great mill to do a mach 4 pmdx mod to. The old wires were all stiff and had to be replaced, but it was pretty simple to do. I just measured the steps per inch of travel and it cut to tolerance.


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Show and Tell / Cnc knee mill
« on: February 17, 2016, 12:24:51 AM »
This is an old jetmatic knee mill from the 80s. It weighs over 2 tons I think. When I purchased the machine, it was completely stock, with the old microteck control system. It read g code off of a casset tape player. It came with nema 42 steppers with hall effect style encoders on the motors. I completely gutted about 200 lbs of electronics out of the cabinets and replaced them with three hybrid stepper drivers from leadshine. The encoders were swapped out for 1000 line disc hubs and readers from US digital. There is a 5 hp rotary phase converter in one of the cabinets.  The new drivers and a pmdx 422 board in the other cabinet. The swing arm will have a control box with a 22" touchscreen mounted on it soon. So far, with great help from the pmdx forum, the machine is completely operational. Just a little more add-ons and it will be done.

I will follow up when finished



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What inputs did you assign? I had the same problem, I assigned them as ps2 inputs, but not sure what to use in the next drop down boxes. It lists inputs 1-28. It doesn't seem to want to save either. Each time I restart mach 4, the fields are blank again. But, that is editing it without the pendant plugged in. We're you able to do any configuring of the pendant plugin? Mine doesn't do anything when I click on configure.

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SmartBOB controllers and dedicated accessories / Re: Driver disabling 422
« on: February 16, 2016, 11:23:08 AM »
yay! it all works. thanks so much. I cant wait to tear up some metal with this mill.

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SmartBOB controllers and dedicated accessories / Re: Driver disabling 422
« on: February 15, 2016, 03:42:30 PM »
I wired all of the limit switches in series and normally closed. They work exactly as they should. The same goes for the home switches. I can have them reference properly in the machine diagnostics tab. But some weird stuff is now going on. If I ref all axes, it will home the z, and then the x axis quits about half way home, then the 422  loses communication. It will seem to lose communication after about 1-2 minutes of doing anything. Jogging, homing... I have gotten an internal error message, a error 107 and the regular communication error after disabling and re enabling. Otherwise everything works great. I disabled those other pluggins, it's never done this before though.

Its almost like it is on an timer. Everything is working, then just stops. Every time.

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SmartBOB controllers and dedicated accessories / Re: Driver disabling 422
« on: February 13, 2016, 02:55:06 AM »
Awesome! That pretty much covers all the bases. I might be able to do all that tomorrow, if not it would have to wait two weeks. I'm pretty sure that I should be able to get everything going now.  I did get motion back about an hour ago. One of those sneaky switches was still normally closed.

Great work bob

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SmartBOB controllers and dedicated accessories / Re: Driver disabling 422
« on: February 12, 2016, 10:35:49 PM »
bob

I have done a bit more work to the machine and seem to have covered some ground and, well, lost some too. after reading the limit switch recommendations post, I wired all my switches accordingly. The original factory wiring was absurd, so I rewired all the limit switches, made sure they were all normally open, and combined their inputs on pin 11. They all share ground. The home switches are individually on pins 12, 13 15, also sharing ground with the limit switches.

in mach4, they are designated as smartbob pinnouts, and assigned the proper numbers in the dropdown menu. However, the estop no longer toggles in the diagnostics window, and pins 11-15 as well as A B C show active, which they are not.

Jogging the machine is now intermittent. some times it will jog for a few seconds, most of the time it wont at all. I believe there is a communication problem. There is no dro movement.  previously I had great communication and movement.   Also, how does mach know which inputs are my home swithches? the limits and homes are different switches, but I don't know how to assign inputs to home. The home settings are not input assignable in the configuration menu.

I will send you my profile by email.

thanks for the incredibly fast responses by the way! kind of unexpected

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SmartBOB controllers and dedicated accessories / Re: Driver disabling 422
« on: February 09, 2016, 02:28:12 PM »
I fixed some of the problems. The error code for over voltage was number 2, whereas I was getting error number 20, which is aan encoder problem. The machine is running and calibrated now. However, I have still not correctly set up my limit or home switches. After reading some other posts, it seems you are supposed to be able to configure things while the pmdx is plugged in. I cannot do any configuring with the 422 plugged in. Both mach and plugging are unselectable while plugged in. Currently if I have any of my limit switches wired, mach won't detect the 422 at all. The e stop does toggle in the live diagnostics screen, but it doesn't do anything. Any ideas on the issue would be aprreciated. Thanks

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SmartBOB controllers and dedicated accessories / Re: Driver disabling 422
« on: December 21, 2015, 12:23:28 AM »
Ah, there it is. Couldn't figure out where the configuration munus were. I found it when I scrolled over in the plug in window. Im used to doing all that in the mach program. It will be a couple days before I can mess with it again, but will surely include everything you asked for if I am still having issues. Thanks a bunch.

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SmartBOB controllers and dedicated accessories / Driver disabling 422
« on: December 20, 2015, 12:39:44 AM »
32 bit Mach 4 ver 2.2803
Smartbob 33.159
64 bit win 8
422 board
Leadshine esdh1208 drivers
Set up in sinking configuration where +5 is provided to driver from 422

Problem:

When I plug the usb I have power and lights are normal. Red is steady and green blinks slowly. Both power and enable led are lit up when enabled on screen. Jumper is removed, but main estop still doesn't do anything.

When I power on the drivers, the enabled light goes out. This happens when I have the ground connected on the limit switches " pins 11 12 13 "  which they are open anyway! So it shouldn't matter. However

If I leave the switches ungrounded, the enable light does stay on when drivers are powered up. Regardless, there is no movement when jogged. The dro does display movement.

As for the wiring, it is simple and straight forward. The enable function on the drivers is left unconnected, which is reccomended. There is an alarm + - configuration left unwired as well, is this nesesary? If so, how should it be configured on the 422?

Any help would be greatly appreciated.
Thanks

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