Mesa 7i97 on Simodrive 611 + glass scales

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4 years 9 months ago #231827 by einarak
I´m retrofitting an old DMU50 to Mesa 7i97, it has Simodrive 611 servo drivers which are I guess closed loop since the AC motors have encoders connected to the drivers. It also has LS486 Glass scales on all axis, which are/were connected to the TNC124 that is being replaced with Mesa and LinuxCNC.

As said before, the encoder on each motor is connected to the servo driver and I assume it has to be that way for the drivers to work.
So should I wire the glass scales to the 7i97 board? Doesn´t it create a conflict if both the Simo driver and 7i97 are trying to control the motor closed loop?

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4 years 9 months ago #231834 by PCW
If the Simodrive 611s are running in analog velocity mode,
you must connect the glass scales to the 7I97/LinuxCNC
for position feedback.
The following user(s) said Thank You: einarak

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4 years 9 months ago #231883 by einarak
Thanks PCW!

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1 month 3 weeks ago #349477 by besriworld
I have an LS486, but I can't find any information about the signal pinout of the connector.

The problem is that I don't have the original cable, and the replacement cable is quite expensive.

Does anyone have the pinout or wiring information for the connector, or perhaps a diagram showing which signals correspond to each pin?

Any help would be greatly appreciated.

Thank you!

 

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1 month 3 weeks ago #349508 by Ul
1. Buy the cable
2. Figure it out yourself using a multimeter
3. Send it back image missing /media/kunena/emoticons/whistling.png

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1 month 3 weeks ago - 1 month 3 weeks ago #349509 by PCW
That looks like a 1V P-P sine output linear scale the needs an interpolator (EXE box or equivalent))
Last edit: 1 month 3 weeks ago by PCW. Reason: sp

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