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Distributed Use of SIMATIC FS600 Laser

Scanner in Category 3 / SIL 2

Entry ID: 21330889

A&D Safety Integrated Page 11/51 AS-FE-I-010-V20-EN

21330889_as_fe_i_010_v20_en_lscanner.doc

Flowchart

The flowchart illustrates the function process of the safety functional

example.

NOTICE

In order to meet the requirements of category 3 / SIL 2, it is

obligatory for certain actuators (e.g. contactor) to read back the

process signal to the actuator.

Read-back is not implemented in this safety functional example. The

actuator is an indicator light simulating a machine. When using

different actuators, the feedback circuits have to be integrated and

evaluated by the user. Safety functional example 7 provides a

detailed description of “Read back”.

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Siemens SIMATIC FS600 Istruzioni per gli Interventi Pagina 11