spindle benc htest

[mcbr549]

I started having trouble with my spindle on my Grizzly G9972Z lathe. I'm using a DuraPulse GS20X -22P0 VFD driving a 2hp motor. Occasionally the spindle would not shut off and I would reset the VFD and it would start up again.

Today it did not work (resetting) so I started looking at everything. I decided to un hook the analog input and run the spindle bench test.

Here is what happened...on the very first one I got .87 volts which is less than the 1.65 and it stops the test.
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My question is, what else can I check to cause this under-voltage?

Report attached
Centroid Acorn Board
DURAPulseGS20X-22PO

report_E062347DB732-0721214949_2023-03-30_13-09-49.zip

(902.02 KiB) Not downloaded yet

[suntravel]

Do you have a capacitor across the 0-10V line?

Uwe

[mcbr549]

No, there is no capacitor

[suntravel]

I am using a snubber (5.jpg) to stop voltage fluctuating with VFD attached to acorn.

https://centroidcncforum.com/viewtopic. ... 032#p46032

Uwe