Series 651 INSTALLATION
605451EC Edition 2014-07-10 55/
4.6.1.4 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.
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.
OPEN and CLOSE are always done with maximum 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
‘Service Box 2‘)
:
Go to ‘Setup / Control Parameter’ menu. Select
valve speed.
It’s not possible to do ‘Valve speed
adjustment‘ via remote operation.
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