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Navigation and Customization
Troubleshooting valve performance with PID tuning
The following issues can often be resolved by adjusting the PID gain
values for your pressure controller.
Fast oscillation around the setpoint
• PD
: Reduce the P gain in decrements of 10%
• PD²I
: Increase the P gain in increments of 10%,
and then adjust the I gain to fine-tune.
Overshot setpoint
• PD
: Reduce the P gain in decrements of 10%.
• PD²I
: If D is not zero, increase the P gain in increments of 10%.
In rare situations D may be zero; in that case, decrease
the P gain in 10% increments to avoid overshoot.
Delayed or unattained setpoint
• PD
: Increase the P gain in increments of 10%, and then
decrease the D gain by small amounts to fine-tune.
• PD²I
: Increase the P gain in increments of 10%,
and then increase the I gain to fine-tune.
✓
Valve tuning can be complex. If you have any trouble, please
call support (
) to guide you through the process.
Or, visit alicat.com/pid for more detailed instructions.
