Hello,
I have a 1400 with a 1762-IF4 analog input card.
I am using a LVDT for positioning on a hydraulic cylinder.
The LVDT is reading fine and resolution is good.
Input configured for 0-10, no problems there.
I have the AI Channel filter set to " None, 130 ms update" ( lowest setting)
MY PROBLEM:
I need to stop the cylinder on a dime with dependable repeatability. Not getting that result.
I am currently of the troubleshooting opinion that the AI is too slow for what I'm trying to do (Remember-Filter at "None, 130 ms update")( or, am I misinterpreting the 130 ms)
I have this exact same LVDT in other applications with other AB PLCs, ( all be it, newer ones) with profound accuracy.
Does anyone know of a corner I'm not looking into?
Please help. Factory Acceptance Test tomorrow!!! Doesn't look like I'm gonna make it.
Thanks,
Bryan Whitfield