G540 VFD Output with KBIC?

[vlmarshall]

Hello all,

I'm in the middle of a CNC router build, with a Sherline spindle and Gecko G540.

I see that the 540 has "0V to +10V opto-isolated analog output intended for use with VFD drives."

A year ago, when trying to control spindle speed on my Sherline mill with another brand of spindle control, I burned out my spindle controller and the 0-10v board because I didn't use an isolated power supply, and

Now, I've got it working on my Sherline lathe, and want speed control on the router as well. Will the Gecko handle this?

[Fastest1]

From what I have read I think it does exactly that. I think you still might need the kbic controller for the input. Did you use Homanns design for your Sherline? I run 1 of his boards on my Sherline and I also burned my first one out too. However I burned mine up hooking it up hot and bumping it up against something metal. Stupidity! Anyway the G540 does put out the correct signal to control speed.

[vlmarshall]

I was (and, after a repair, AM ) using the CNC4PC C6 Spindle Speed Controller Card.
It has options for two different voltage inputs, one of them matched a power supply I had in the mill enclosure already, so I used it.
Crack, Fizzle, and I'd lost not only the C6, but my Control Techniques motor controller as well.
A year later, with new optoisolators in the C6, I finally put it to good use on a lathe.

I'd rather not burn out a Gecko and the router's Sherline controller if the Gecko can't handle it.

[Fastest1]

The gecko just supplies the signal voltage. Try an email to gecko if no answer here.

[vlmarshall]

Yeah, that's all the C6 card does, tunable 1-10v out from a PWM signal in.