Subsystem C According To Din En 62061 (Chapter 6.7.8.2.4); Subsystem D According To Din En 62061 (Chapter 6.7.8.2.5) - Siemens Simatic Manual

Fail-safe function blocks for storage and retrieval machines. distributed safety/tia safety advanced.

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Storage and retrieval machines and safety functions

As a result of the different encoder versions, and the resulting wide range of hardware versions that can be

used, the user must determine the safety integrity level of the safety function. To be in compliance with EN

528 (RN15, 2008), this must be at least SIL2/PL

respond).

To verify this, in this section, parameters are described that have a direct influence on the software solution

when calculating the safety integrity level based on DIN EN 62061 (RN01, 2005). Only the sense block is

discussed. The evaluate block corresponds to a SIMATIC F-CPU with Distributed Safety/Safety Advanced,

certified up to SIL3/PL e; the respond block is a SINAMICS S120, certified up to SIL2/PL d. The precise

parameters of the evaluate and respond blocks should be taken from the corresponding data sheets.

While versions 2-4 comply with the requirements according to subsystem D, version 1 fulfills the require-

ments according to subsystem C, as shown below:

1.2.6.1

Subsystem C according to DIN EN 62061 (Chapter 6.7.8.2.4):

1.2.6.2

S7-Distributed Safety/SIMATIC Safety - fail-safe function blocks for storage and retrieval machines

d over the complete safety function (sense -> evaluate ->

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