kmoser
Member
Hey all,
I'm having this issue with an Allen Bradley AC input card(1756-IA16I). I was looking into another issue and found that the inputs on the card were acting strangely. The inputs are on with ~36V AC induced because they run about 400' or so in a 2" conduit with a bunch of other wires, which is all existing so this has probably been an issue since whenever it was all installed. The obvious fix would be to replace the wire with shielded cable but I wanted to see if there were any other solutions to either pull down the voltage at the card below 30V so that it doesn't trigger the inputs, or if there is a way to do so within the plc.
I'm having this issue with an Allen Bradley AC input card(1756-IA16I). I was looking into another issue and found that the inputs on the card were acting strangely. The inputs are on with ~36V AC induced because they run about 400' or so in a 2" conduit with a bunch of other wires, which is all existing so this has probably been an issue since whenever it was all installed. The obvious fix would be to replace the wire with shielded cable but I wanted to see if there were any other solutions to either pull down the voltage at the card below 30V so that it doesn't trigger the inputs, or if there is a way to do so within the plc.