How to control a 4-20ma SSR "phase angle control" or 0-10v...

FBG

Hello everybody!
I have very clear how to control a heated bed with a SSR, simple use the output in mode PID and not more...

But with big heated bed is better use a 4-20ma SSR because modulate the voltage...

Someone have idea how the duet3 can mange a output pin with 4-20ma?

If signal 4-20ma is not possible....0-10V modulated?
Best Regards

alankilian

@FBG Would it work to convert the Duet's PWM to 4-20ma with something like this?

I don't really know what the signal looks like when the Duet controls the bed in PID mode.