Hello,
I have 3 of the same valve positioners controlling V-Ported valves to control the flow of our product with a user input.
Their wiring schematic has a +/- for 24 VDC, +/- for output feed back (to PLC input) and +/- for input feed back (to PLC output)
I have successfully made 2 of these work with little to no problems as I have wired and programmed many a-like valves. the power and inputs all worked on first go.
How ever, when I connect the third valve to my new output card (1746-NO8I) all of the other inputs on my card go a bit haywire, instead of being at 31200 mA they drop to 20000 mA. These are the 2 valves that are already working, and the third valve also wont go above approx 20mA. this only lets the valves open to about 40% and if it varies slighly it loses signal completely.
This is a new PLC card and the only other connections are to the two positioners. I havent had an issue like this before has anyone had this happen and have any suggestions?
Thanks
I have 3 of the same valve positioners controlling V-Ported valves to control the flow of our product with a user input.
Their wiring schematic has a +/- for 24 VDC, +/- for output feed back (to PLC input) and +/- for input feed back (to PLC output)
I have successfully made 2 of these work with little to no problems as I have wired and programmed many a-like valves. the power and inputs all worked on first go.
How ever, when I connect the third valve to my new output card (1746-NO8I) all of the other inputs on my card go a bit haywire, instead of being at 31200 mA they drop to 20000 mA. These are the 2 valves that are already working, and the third valve also wont go above approx 20mA. this only lets the valves open to about 40% and if it varies slighly it loses signal completely.
This is a new PLC card and the only other connections are to the two positioners. I havent had an issue like this before has anyone had this happen and have any suggestions?
Thanks