marshjhm
Member
I have recently received a piece of equipment from an oem with an Allen Bradley Pico controller. I have pulled wires and set it up to run using a 1756-OW16 output card to drive three inputs from a supervisory Controllogix processor. The problem is the outputs have a small leak current that activates the inputs on the Pico controller even when the outputs are off. My quick fix was to put a small light bulb as load to bleed off the stay current and pull the voltage to zero. This has worked up to now, but this is not the best solution. What I think I need is a high resistance load resistor to pull down the leak current. Does anyone know what value/wattage I should use for this?