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Installation, Operating & Maintenance Instructions
Series 650 DN 100-
250 (I.D. 4“ - 10”), DeviceNet
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com
266341ED
2012-07-13
38/79
3.10.2.1 Gain factor adjustment
The gain factor effects:
Stability
Response time
Default value is 1. Adjustment range is from 0.0001 to 7.5.
Higher gain results in:
faster response
higher over- / undershoot of pressure
Lower gain results in:
slower response
lower over- / undershoot of pressure
Adjustment procedure:
1. Start with gain factor 1.0
2. Open valve.
3. Control a typical pressure / flow situation.
4. Repeat from step 2 with lower (higher) gain factors until optimal pressure response is achieved and stability is ok.
Note:
Normally adjustments down to gain factors of 0.42 should lead to good results. Otherwise you may need to
improve sensor connection. Refer to «Requirements to sensor connection».
Local operation
:
(„Control View‟, „Control Performance Analyzer‟ or
„Service Box 2„)
Remote operation
:
(Refer to chapter «Explicit messaging setup
commands» for details)
Set gain factor in menu „Setup / Control Parameter‟
Select PID CONTROLLER GAIN FACTOR