I have a weird problem that I hope is indicative of something simple that someone here can help me with.
I'm using a 24v input, 0-10v output, Vac-45psi pressure transducer. I'm supplying + and - from my 24v power supply to the transducer. I'm taking the signal from the transducer and sending it to the IV1(+) terminal on my Micrologix 1100. The IA COM terminal is getting - from my 24v power supply.
Everything seems to work fine for hours at a time, until randomly the pressure reading will be full vacuum when it should be something else. Applying pressure to the transducer doesn't change anything. I checked the voltage from IV1(+) to my - terminal on the power supply...0V.
What's going on? Anything I should check? Why does cycling the power solve the problem?
Thanks in advance,
Dave
What I've found is when I remove power to the control system and then power up again, the problem goes away. For reference the voltage between IV1(+) and - on the 24v power supply is around 2.4V at atmospheric pressure after powering up again.
I'm using a 24v input, 0-10v output, Vac-45psi pressure transducer. I'm supplying + and - from my 24v power supply to the transducer. I'm taking the signal from the transducer and sending it to the IV1(+) terminal on my Micrologix 1100. The IA COM terminal is getting - from my 24v power supply.
Everything seems to work fine for hours at a time, until randomly the pressure reading will be full vacuum when it should be something else. Applying pressure to the transducer doesn't change anything. I checked the voltage from IV1(+) to my - terminal on the power supply...0V.
What's going on? Anything I should check? Why does cycling the power solve the problem?
Thanks in advance,
Dave
What I've found is when I remove power to the control system and then power up again, the problem goes away. For reference the voltage between IV1(+) and - on the 24v power supply is around 2.4V at atmospheric pressure after powering up again.