VAT 650 Series Installation, Operating, & Maintenance Instructions page 55

3.10.1.4 Valve speed adjustment
Valve speed effects:
• Response time
Default value is 1000. Adjustment range is from 1 to 1000.
This parameter effects valve plate actuating speed.
Speed adjustment is effective for PRESSURE CONTROL and POSITION CONTROL.
Note: Normally best pressure control response is achieved with max. valve speed. In particular applications it may be of
advantage to have a slower valve response.
Note: OPEN and CLOSE are always done with max. speed.
Adjustment procedure:
1. Use optimal gain factor, sensor delay time and setpoint ramp according to preceding tuning steps.
2. Open valve.
3. Control a typical pressure / flow situation.
4. Repeat from step 2 with slower valve speed until required response is achieved.
('Control View', 'Control Performance Analyzer' or
Go to 'Setup / Control Parameter' menu. Select valve
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 650 DN 100-250 (I.D. 4" - 10"), CC-Link
Local operation:
'Service Box 2')
speed.
Remote
Note: It's not possible to do 'Valve speed adjustment'
via CC-Link.
operation:
280672EB
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2010-12-15