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3.10.1 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.
Start
Set all
paramters to
default
Pressure
control
ok ?
No
Gain factor
adjustment
Pressure
control
ok ?
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
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
Installation, Operating & Maintenance Instructions
Series 612 DN 40 (I.D. 1.5"), RS485
Reset gain
factor to 1.0
Sensor delay
adjustment
Gain factor
adjustment
No
No
Pressure
control
ok ?
Setpoint ramp
adjustment
No
Pressure
control
ok ?
tuning-support@vat.ch
Valve speed
adjustment
No
Pressure
control
ok ?
Contact
End
VAT
289917EA
2011-07-07
30/69
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