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3.13
Manual Tuning
In certain applications, using Auto-Tuning to tune a process may be inadequate. If this is the case, the user
can try manual tuning.
The following guidelines can be applied for further adjustment of PID values.
ADJUSTMENT SEQUENCE
SYMPTOM
SOLUTION
Proportional Band ( PB )
Slow Response
Decrease PB
High overshoot or
Oscillations
Increase PB
Integral Time ( TI )
Slow Response
Decrease TI
Instability or Oscillations
Increase TI
Derivative Time ( TD )
Slow Response or
Oscillations
Decrease TD
High Overshoot
Increase TD
Effects of PID Adjustment are as follows. Note that this is a guide only, and your specific application may be different.
