[jeeybee]

I have some problems controling my Kress spindle with an SSR relay, It turns on at first but if I turn it off it wont start a second time.
I suspect this is because the built in speed control rectifies the voltage?

Is this the problem and is there a way around it?

[keebler303]

Yes, it sounds like the speed control is not letting the triac in the SSR turn on. A simple solution is to use a normal (electromechanical) relay to switch on the Kress. You could still use the SSR to switch the relay to avoid having to fuss with your wiring too much.

Matt

[nophead00]

Had the same problem. The SSR turns on OK but the spindle immediately cuts out. I think it is confused by the leakage current.

Wiring a 15W pygmy light bulb across the spindle makes it work but I went to a mechanical relay as well.