Safety Notes For Operation With Natural Gas - Siemens SIPART PS2 Compact Operating Instructions

WARNING
Commissioning and operation with pending error
If an error message appears, correct operation in the process is no longer guaranteed.
● Check the gravity of the error.
● Correct the error.
● If the error still exists:
– Take the device out of operation.
– Prevent renewed commissioning.
5.1.1

Safety notes for operation with natural gas

See detailed operating instructions for information and safety notes on operation with natural gas as an actuator medium.
5.2 Overview
Note
● 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
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.
● Copying the initialization data when replacing a positioner:
the initialization data of a positioner can be read and copied into another positioner. A defective device can thus be
replaced without interrupting an ongoing process through initialization.
You have to define a few parameters for the positioner before initialization. Owing to the preset values, you cannot adjust
further parameters for initialization.
You can use a suitably configured and activated binary input to protect the configured settings against accidental
adjustment.
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SIPART PS2 (6DR5...)
A5E03436620-04, 02/2014