Siemens SIPART PS2 6DR50xx Betriebsanleitung PDF herunterladen (Seite 107)

SIPART PS2 with and without HART communications

Operating Instructions, 09/2007, A5E00074631-07

107

Commissioning

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.

● 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.

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Siemens SIPART PS2 6DR50xx Betriebsanleitung Seite 107