FeedForward

ControlLogix Lead/Lag Instruction (LDLG)

Introduction to the ControlLogix Lead/Lag Instruction (LDLG) The ControlLogix Lead/Lag Instruction (LDLG) is useful in PID Loops. We might use this with the FeedForward (FF), or Bias input. The purpose of the Feed Forward is to anticipate changes. For example, if our load changes, we can immediately offset the output Read More »

LeadLag

Feed Forward for PlantPAx PID

Introduction to Feed Forward for PlantPAx PID With Feed Forward for PlantPAx PID, we can adjust the control variable directly. For example, if the load increases from a tank, we can immediately provide a higher setpoint to the inflow. This can drastically improve response time. Additionally, it will usually reduce Read More »

Disturbance Offset