g.mccormick
Lifetime Supporting Member
We have belimo valve that is getting powered by 24VDC power supply. That same power supply is feeding the DC+/- of a OF8C analog output module. Right now, I have a 500ohm resistor across the 4-20MA output to generate 2-10V. The issue is that if I measure the AO+ to 24vdc-, I get 34VDC. If I try and tie the AO- directly to 24VDC-, I fault the power supply... What am I missing here?
The PLC power supply is seperate from the 24VDC power supply powering OF8C and the belimo valve.
The PLC power supply is seperate from the 24VDC power supply powering OF8C and the belimo valve.