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The tach wires are coming directly out of the tach.. And it's not case ground either.. I checked the literature from Baldor and it doesn't show these wires.. Strange..

Guys,

Been spending some late nights chasing some noise and I've stumbled across something I'm unsure about. On the top of the servo motors (Baldor MTE series - DC motor) there are two yellow...

Hello Tom,

Problem Solved!!

The original wiring was only using the A and B channels of the encoder and as you suggested the A- and B- were dangling in space inside the encoder case. Since we...

Thanks Tom..

I followed these instructions on your FAQ and purchased the US Digital convertors. I will double check however I am confident they are wired correctly after spending quite a bit of...

OK..

Got the INIT file sorted out! That's working well.

Been scratching today for several hours on the next problem and this one has me stumped.

Neither the X axis (using either motor) or...

Hello All,
Once step closer to getting the scrap value Thermwood C53 back on her feet with her new Dynomotion electronics! Spooled the 15HP spindle up a few days back with a 30HP VFD and it hummed...

So far so good..

Received the laser a few weeks ago and picked it up at the local port (Wilmington, NC).

After loading it into a Uhaul trailer and unloading at our facility and unpackaging we...

Hey Tom,

OK.

1. On Axis 4 I ran the step response a few more times and didn't see saturation at 2000. I must have been hitting the hard stop. There is still a voltage being applied to the DAC...

Hey Tom,

Thanks..

Making progress.

1. I sorted out the issues with Axis 4 and am seeing some plots that give me the feeling that I am headed the correct direction for the first time. A few...

Thanks for the response Tom..

Below are a few plots from this morning..

1. The first is regarding the acceleration and velocity settings.

In step response I did a move with max output set...

Guys,

Making decent progress..

Back to tuning and a couple of quick questions:

1. When setting the V and A. My max motor RPM is 3250 which has me enter 135000 (3250/60*2500 counts\rev)....

Getting back to the servo testing after sorting out limit switches we found that one of the encoders was not working properly. It was a complete bear to find a suitable replacement however found a...

OK Guys...

Nothing felt better than seeing the checkbox toggle on and off on the Digital I/O screen today..

I wound up using +12V (brown) and -12V (black) tied to the sensor and com (blue) and...

Hey Tom,

Thanks for writing..

I pulled out the 1993 blueprint and looked more closely and sure enough the 'black wire' is tied to -12V and not ground. I called Thermwood for the specs and the...

Hello All..

Making progress on the Thermwood retrofit. Had a quick question regarding the limit switches which are NPN.
As I understand it I am to place a resistor across the positive contact...

Thanks Ben.. Great information!!
I've put tuning on the backseat for a few days as I sort out limit switches and E-Stop. I organized the wiring in series for the three E-Stop buttons and am now...

Ben,

Thanks for the great information. I found a few primers on the web for PID controllers and dug into that. It's making a bit of sense.

Looking forward to trying your formula out.

A...

Hello All..

New project I'm working on here. An older Thermwood CNC Router (C50) that I've upgraded with KFLOP and KANALOG. I'm fairly new to the terminology used on the help pages and not quite...

OK.. The trigger has been pulled and the unit is 50% purchased. This will either seem like a great idea or a horrible idea in about 60 days. I have a pretty good feeling. Support so far has been...

Great to hear that you got it working with such an easy solution. You must have been pulling your hair out on that one!