Commissioning

PID Tuning Calculator

Calculate controller tuning parameters from open-loop step test data using multiple methods.

For reference only — always verify tuning parameters on-site during commissioning. Start with conservative values and increase gain incrementally. These calculations assume a first-order-plus-dead-time (FOPDT) process model.

Step Response Data

Process Model (FOPDT)

Process Gain (Kp)

Delta PV / Delta Output (%)

Dead Time — Td (s)

Time before PV responds

Time Constant — Tau (s)

Time to reach 63.2% of change

Controller Settings

Controller Type

Controller Action

Most temperature/pressure loops are reverse acting

Lambda Tuning Parameter

Lambda Multiplier: 3x dead time = 30.0s

1x (Faster)3x (Default)5x (Slower)

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