Axyz retrofit - spindle wiring 7i96

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14 Aug 2025 03:07 - 14 Aug 2025 03:13 #333381 by rhscdn
Axyz retrofit - spindle wiring 7i96 was created by rhscdn
I think I have wrapped my head around my stepper motor and limit switch wiring. Regarding the spindle, I have a few questions:

The inverter is a woods eTrac x2c and the manual offers a nearly overwhelming number of options. I was never able to see the spindle working with the stock
AMC controller. I have attached the relevant table from the inverter manual and it seems like I should be able to use the analog spindle interface to provide 0-5vdc signal for speed control (vin). Do I simply use inputs on the 7i96 to conteol fwd/rev and a ground connected to the inverter common? Is that all there is to it?

The original wiring from the AMC controller to the inverter is somewhat different and it isn’t obvious that the AMC was actually able to control the spindle speed. It is connected to use 4 preset spindle speeds and the AMC has wires indicating an acceleration/deceleration signal, as well as some connections to NO and RCM.

 

 
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Last edit: 14 Aug 2025 03:13 by rhscdn. Reason: URL butchering

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14 Aug 2025 15:30 - 14 Aug 2025 22:02 #333421 by PCW
Replied by PCW on topic Axyz retrofit - spindle wiring 7i96
Is the a 7I96 or 7I96S?

If 7i96S you should be able to use the 7I96S analog output
connected to the VFDs +5V output, CM, and VIN1

VFD   7I96S
REF   SPINDLE+
VIN1   SPINOUT
CM      SPINDLE-

Then you would use 2 isolated outputs to drive the VFDs FWD and REV pins, something like:

V+  --> OUT0+
OUT0- --> FWD

V+  --> OUT1+
OUT1- --> REV
 
Last edit: 14 Aug 2025 22:02 by PCW.

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