"With at deadband of 30 you tell the pid to take no action until the error > 30."
That makes things clear for sure, thanks. I did test this and it works great.
Thanks everyone here is some more information...
The controller is in Auto mode when this happens and when if put it in manual the output goes right to zero and then if you put it back in auto it stays at zero. The process variable is definitely at zero unless it
The PID is set up as...
We have a Clean Steam Reducing Station for reducing steam pressure from 60lb to 45lb and 30lb. It is being controlled by an Allen Bradley SLC 5/05 and a Panelview 1000. The problem is that when the Setpoint (SP) is changed to 0 and the Process Variable (PV) is 0, the output for the control...
