Siemens SITRANS LG250 Operating Instructions Manual page 74

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Function block PID Control

The function block "PID Control " is a key component for various tasks in the process automation

and is used universally. PID blocks can be cascaded if this is necessary or requested due to differ-

ent time constants with the primary and secondary process measurement.

Fig. 40: Schematic presentation function block PID Control

Function block Output Splitter

The function block "Output Splitter" generates two control outputs out of one input. Each output is

a linear image of a part of the input. A retrograde calculation function is realised by using the linear

imaging function inversely. A cascading of several Output Splitters is supported by an integrated

decision table for the combinability of inputs and outputs.

SITRANS LG250 - Operating Instructions

PBD-51041056

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