Hello, I have a strange request from a client. He has a "burn-off" which is used to burn bits of labels that are stuck onto his products, that's a bit vague, but it's all the info I have. The request is that he wants to be able to change the voltage going through the burn-off anywhere between 100-350VAC, presumably to burn things quicker/slower depending on the product and label. He wants the voltage to be selectable via his HMI, but I'm not quite sure how to go about it. A variable transformer makes sense, you can even get motorised ones. However, they don't have a feedback from what I can tell. I've found a 0-580VAC motorised Variac. My idea is that I can use 2 digital outputs for forward and reverse on the motor, then, for feedback I can somehow convert the voltage to 0-10VDC or 4-20mA (the AI card has both). I say "somehow convert" because I know it can be done with simple electrical components, but I dare say my company would prefer an "off the shelf" solution. Or am I going about it all the wrong way? Thanks for any help you can provide!