Installation, Operating & Maintenance Instructions
Series 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel +41 81 771 61 61 Fax +41 81 771 48 30 CH@vatvalve.com www.vatvalve.com
267736ED
2008-02-26
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3.10.2 Tuning of control performance
Normally the default settings will result in good pressure control performance. For some applications tuning may be
required to improve performance.
The tuning procedures for each parameter (grey boxes) and its default values are described separately below. Strictly
keep the procedure order.
Required information for support:
• Go to ‘Tools / Create Diagnostic File’ in ‘Control View’ resp. ‘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
No
No
No
No
No
Gain factor
adjustment
Pressure
control
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