Dynomotion

Group: DynoMotion Message: 11842 From: cnc_machines Date: 7/1/2015
Subject: SnapAMP Power
Greetings,

I may have just roasted my PSU. I assumed that the SnapAmp could run at two different voltages for each motor. there is a VS1 and VS2 input. When I hooked 40V up to VS1 and 80V up to VS2 (Center tap off of the same transformer). I got a puff of smoke out of my rectifier diodes. Can it be operated this way?

Thanks,

Scott
Group: DynoMotion Message: 11844 From: Tom Kerekes Date: 7/1/2015
Subject: Re: SnapAMP Power
Hi Scott,

Sorry to hear this.  Yes you can apply two different Voltages to different sides of SnapAmp.  They do have a common GND.

I don't know what you mean by "center tap off the same transformer".

Which supply was damage?

What voltage was the SnapAmp Supply Voltage clamping set at?

Regards
TK 

Group: DynoMotion Message: 11845 From: cnc_machines Date: 7/1/2015
Subject: Re: SnapAMP Power
I see my mistake. I am using a PSU that has a secondary coil with a center tap, 80V between the outer legs, and 40 between the center tap and either of the outer. I didnt realize there was a common ground, and wired it in such a way to short.