SIPART PS2 with PROFIBUS communication
Operating Instructions, 09/2007, A5E00127926-07
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Commissioning
9
9.1
Overview
NOTICE
•
During the initialization process, the operating pressure must be at least one bar more
than that required to close or open the valve. However, the operating pressure should
not be greater than the maximum permissible operating pressure for the actuator.
•
The transmission ratio selector can be set only when the positioner is open. Therefore,
check this setting before closing the enclosure.
General information about commissioning
After installing the positioner on a pneumatic actuator, you must supply electric and
pneumatic auxiliary power to it.
The positioner is in the "P manual mode" before initialization. At the same time, "NOINI"
blinks in the lower line of the digital display.
Adjust the positioner as per the respective actuator with the help of the initialization process
and by setting the parameters. If required, use the "PRST" parameter to cancel the
adjustment of the positioner on the actuator. The positioner is again in the "P manual mode"
after this process.
Types of initialization
You can initialize the positioner as follows:
●
Automatic initialization:
during automatic initialization, the positioner determines the following one after the other:
–
The direction of action
–
The actuator travel and angle of rotation
–
Movement times of the actuator
The positioner also adjusts the control parameters as per the dynamic response of the
actuator.
●
Manual initialization:
the actuator travel and the angle of rotation of the actuator are set manually. The
remaining parameters are automatically determined. This function is useful for actuators
with soft end stops.
