Sequence Of Automatic Initialization; Parameter - Siemens SIPART PS2 Operating Instructions Manual

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Commissioning

5.4 Parameter

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

– The travel time 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 valves which are lined,

for example, with PTFE.

• 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.

With a suitable parameter assignment of the "DI1" parameter and activated digital input DI1,

you protect the settings that were made against unintentional adjustment.

5.3