4.6 Initial operation
4.6.1 Setup procedure RS232
To enable the valve for pressure control setup steps 1 to 6 must be performed.
In case position control is required only it’s sufficient to perform steps 1 to 3.
Turn on external + 24VDC power supply of valve (and external 15
VDC for sensor power supply if required).
Refer to chapter «Behavior during power up» for details.
RS232 parameters and digital inputs for valve may be changed from
the default values.
Refer to chapter «RS232 interface configuration» for details.
Basic configurations of valve must be adapted according to
application needs. Refer to chapter «Valve configuration» for details.
Basic configurations of sensor(s) must be adapted according to
application needs. Refer to chapter «Sensor configuration» for
details.
Compensation of the sensor offset voltage.
Refer to chapter «ZERO» for details.
Determination of the vacuum system characteristic to accommodate
the PID controller. Refer to chapter «LEARN» for details.
Without LEARN the valve is not able to run pressure control.
4.6.2 RS232 interface configuration
Interface configuration must be adapted according to application needs.
The factory default settings of the interface is shown in the table below.
Functionality of digital interlock inputs CLOSE VALVE and OPEN VALVE. These may be configured as
‘not inverted‘, ‘inverted‘ or ‘disabled‘. Default is ‘not inverted‘. Refer also to «Digital inputs».
Pressure and position range for RS232 with analog output communication must be selected. Default for
pressure is 0 - 1’000’000. Default for position is 0 - 100’000.
Local operation:
(‘Control View’, ‘Control Performance Analyzer’
or ‘Service Box 2‘)
Remote operation:
(Refer to chapter «Setup commands» for details)
Do configuration in menu ‘Setup / Interface’.
1. Send INTERFACE CONFIGURATION
2. Send RANGE CONFIGURATION
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