Optimizing I-Gain

<< Click to Display Table of Contents >>

Navigation:  Valve Firmware > Pressure Control > Softpump algorithm > Tuning >

Optimizing I-Gain

Previous pageReturn to chapter overviewNext page

I-Gain is responsible to reach the setpoint. If reaching setpoint is not important (e.g. setpoint is 0) leave the I-Gain at 0. Otherwise start with P-Gain set to half of the value found when optimizing P-Gain and set I-Gain to 0.1. Keep the P-Gain constant. Start again the pump down. Check how the pressure reaches the setpoint:

If the setpoint is reached too slowly increase I-Gain

If there is an undershoot increase I-Gain

 

Required information for support:

 

Go to ‘Tools / Create Diagnostic File’ in ‘Control Performance Analyzer’ and save file

Pressure / flow / gas conditions to be controlled

Chamber volume

Pumping speed (l/s) and pump type (e.g. turbo pump)

System description

Problem description

 

Send diagnostic file with and all required information to tuning-support@vat.ch