PID SKILL CHALLENGE

PID SKILL CHALLENGE

For this challenge, assume:

• Increasing the Output (OP) causes the Process Variable (PV) to rise.
• ΔP, ΔI, and ΔD represent the contributions of the Proportional, Integral, and Derivative
• ΔP, ΔI, and ΔD are summed and added to the overall OP on each scan (update cycle).
• ΔP, ΔI, and ΔD act on the Error
• Each dot on the trend represents a process sample value.
• The left side of the trend shows older samples, while the right side reflects the most recent.
• The derivative term uses the most recent 3 samples (right 3 dots).

For each of the 10 scenarios, decide whether ΔP, ΔI, and ΔD will attempt to increase (+), decrease (−), or have no effect (0) on the Output. The following are the options to choose from:

•   0   No effect on the Output
•   +   Adds to the OP (Increases)
•   −   Subtracts from the OP (Decreases)