BoxerBrats
Member
OK question, I have a pressure transducer for pressure range of 0 200 PSI. Puts out a 4 - 20 MA signal. I installed this yesterday and the lines are empty so there is 0 psi, but my PLC is saying there is 200 PSI. I took my fluke measures the MA signal it shows .004 MA.
We tested this before it left the shop using exact PLC and transducer worked perfect, though granted never tested with zero PSI.
We are using a AD PLC with a F0-4AD2DA-2 analog card.
Like i said this was tested here worked fine. I am wondering if the polarity of the wire had been reversed would this have caused the problem?
Any suggestion would be great. At this time I am basically brain dead we had put in over 24 hours last 2 days installing this, and the drive ect....
We tested this before it left the shop using exact PLC and transducer worked perfect, though granted never tested with zero PSI.
We are using a AD PLC with a F0-4AD2DA-2 analog card.
Like i said this was tested here worked fine. I am wondering if the polarity of the wire had been reversed would this have caused the problem?
Any suggestion would be great. At this time I am basically brain dead we had put in over 24 hours last 2 days installing this, and the drive ect....