I need to generate a 0-10v analog signal to control some industrial equipment (fan and damper) with an IMP003. The specs seem to be a standard industrial 0-10v interface (not the current loop). I’m told that the impedance at the controller end is 21k and the current is 500ua. I’m struggling with how to generate this 0-10v signal simply and inexpensively.
I’ve looked at a number of op amp circuits, and sure, I can do that. But it increases my chip count and cost substantially and analog circuitry is not my strong point.
Has anyone implemented something simple and straightforward? It seems PWM is the way to go. But maybe there’s something I can do with the DAC. I’d also thought of using a digipot as a simple voltage divider on a 10vdc input but not sure that would work properly.
Suggestions, and examples would be really welcome.