OPERATION
Series 590
40/56
Edition 2013-05-13
298292EB
5.4
Position control
The valve position is directly controlled according to the position setpoint.
Local operation:
(‘Control View’, ‘Control Performance Analyzer’ or
‘Service Box 2‘)
Remote operation:
(Refer to chapter: «RS232 control commands»
for details.)
Select or enter position setpoint
Send POSITION CONTROL
Operating in position control mode can be done very easily. When setting a defined
position by opening the valve, a pressure in the chamber will be achieved dependent
on application specific parameters. This pressure will be slightly higher than the same
defined position set by closing the valve.
It is therefore recommended that this difference is evaluated prior to operating in
position control.
5.5
Pressure control
To prepare valve for PRESSURE CONTROL perform complete chapter «Setup
procedure».
The valve has parameters that may be modified to tune pressure control
performance. Refer to chapter: «Tuning of control performance».
Operating in position control mode can be done very easily.
When setting a defined position by opening the valve, a pressure in the chamber will be achieved
dependent on application specific parameters. This pressure will be slightly higher than the same
defined position set by closing the valve.
It is therefore recommended that this difference is evaluated prior to operating in position control.
Local operation:
(‘Control View’, ‘Control Performance Analyzer’
or ‘Service Box 2‘)
Remote operation:
(Refer to chapter: «RS232 control commands» for
details.)
Select or enter pressure setpoint
Send PRESSURE CONTROL
