Chinese AASD Drive for Spindle Motor

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28 Mar 2022 02:30 - 28 Mar 2022 02:31 #238505 by tightmopedman9
I am retrofitting a Bridgeport Series II knee mill with a Chinese AC servo and drive 'kit'. I would like to rigid tap and use spindle orient for probing operations. I'd like to keep control entirely within LinuxCNC and control the drive in velocity mode. My mill has a 7i77 with spare encoder inputs and differential outputs and ideally I'd like to control the spindle the same as the other axes on the mill, with a differential +/-10V signal. 

The manual lists two pins for the 'analog voltage input port' and states 'voltage input range -10V~+10V'. This is a picture of the inputs in the manual.
https://drive.google.com/uc?id=1GViEE9WZwYFsdYNB80LrunosXCbfN517
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Last edit: 28 Mar 2022 02:31 by tightmopedman9.

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28 Mar 2022 09:58 #238514 by tommylight
What is the question?
Yes those are the pins to wire the analog out from the Mesa.

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28 Mar 2022 16:33 - 29 Mar 2022 02:35 #238532 by tightmopedman9
Removed due to incorrect information posted. 
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Last edit: 29 Mar 2022 02:35 by tightmopedman9.

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28 Mar 2022 18:07 #238539 by tommylight

Mesa analog out is not diferential, it has a ground/common and AOUTn, that AOUT will go from -10 to +10V compared to that ground.
Aout to vref
gnd to gnd
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29 Mar 2022 02:35 #238567 by tightmopedman9
Thanks!

I should have done some more research before posting, it seems quite obvious now.
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