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Hope this isn't considered spam, but I have a similar machine for sale if anyone is interested. Uses a Fanuc control, but the other parts are very similar :)
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Sorry, I was referring to C3 (2.5khz max) and C8 (3mhz max) inputs. The C3 connector has very limited use in CNC applications.
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The difference is the input frequency. Any high speed/high resolution application needs to use the differential input.

Jerome. That sucks about the Elmo...if they are discontinued then we really only need to find one of them to see what chips they use to do this function. Probably not too hard to replicate for our...

WOW, I totally missed that Elmo actually sells a S/D converter dedicated to this use. That's awesome!! Oh, and my next servo drive purchase will be from granitedevices. His hardware is by FAR are...

That DDR motor will tune so tight you can't see it move when you shove on it. With 2million counts...it'll probably only move 10-20counts before the servo drive is pushing out some huge current to...

WOW, sounds awesome. If you have a scope I would look at the signals to make sure you're getting nice clean pulses. If you can't do that, then just setup a test to cycle the motor back and forth...

That looks like it's only analog...what you need is digital. I searched for 5 minutes and came up with this...jeez I wish I had found this sooner :( I'm looking for a price right now
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Hmmm, I would try to use the C8 connector if at all possible. If you can't get the voltage divider circuit working then it may be possible to find a chip that will convert single ended to...

Does the G100 offer differential line drivers?

There isn't any way to hook up directly to a normal breakout board. You need a differential signal for the kollmorgen to work at all. CNCbuildingblocks had a breakout board that would do this...but...

The Y-2012-2 only needs 45V to get to 1000rpm so the VSD-E should provide plenty of overhead before you reach voltage saturation. In other words it should work perfect.

Man, I guess there will never be any connection problems with 6 pins/wire :)

I gotta say, these drives are by far the most universal drive that exists. I guess the only motor they won't run is an...

You need to wire up a differential output to the "remote encoder" plug at the top of the drive. Here is some info I received from PMDX about this issue. It seemed to work ok, but you need a good...

www.limct.com has the best prices on gates hardware. Check out the prices for their carbon belts...you'll be pleasantly surprised I think :)

Man, that heatsink design is very sexy. I have a question about using higher voltages with this drive. Is it a matter of replacing a few resistors, and the FET's??? If it is...maybe you could make...

6000rpm!!! The commutation frequency is approaching PWM frequency no?

So there will not be a toolpath display?

So there will not be a toolpath display?

I may have missed this, but are there any plans to integrate a nice toolpath display? I combed over the website and only see screenshots showing the Gcode text commands.

P.S. If the Vision system...

I may have missed this, but are there any plans to integrate a nice toolpath display? I combed over the website and only see screenshots showing the Gcode text commands.

P.S. If the Vision system...

That encoder kit looks neato, but after quadrature you only get 90x4=360 increments. Most servo systems are only good for maybe +-10 counts if the structural loop is very good. With the integral...

Up and Down angular error in the spindle produces a nonlinear error in work diameter. So even a pretty severe misalignment would only produce a VERY small diameter error on normal size stock. Small...

Don't even bother trying to talk to THK...they're customer support is terrible. They won't even sell you end seals direct...motion industries is helping me out, but it's been 3 months and still no...

OK, my point is only partially that one system is better than the other. If the ENTIRE world is programming in C++, and the USA is still using FORTRAN...there is a MAJOR disadvantage to those in the...

Metric is much easier to design and engineer in, that's been my experience. Plus, everything we buy is made overseas..and that is metric. This country is just stuck in the past which is proven by...

I wish we could buy metric steel/aluminum here in the states. This country is so far behind the rest of the world in that regard :tired:

Does anyone know of an online supplier with good prices on...

Egg shaped balls? I have never heard of that before. If they are "egg" shaped then the block would run terribly in any position. In the vertical orientation the balls must be PUSHED up a very long...

If you're using servos, putting the encoder on the ballscrew is a bad idea. This will result in a very low system stiffness or you'll get some nasty oscillations at a high stiffness. As for pulley...

OK, the breakout board would be a fantastic solution! The thing I really hate about the BIG companies is that the cables cost about 1/3 the price of the drive and they're usually proprietary...