Calculation Of Suitable Protective Measures - Examples; Fig. 8 Determining And Assessing Protective Measures - Pilz Intern PMC SR6 Manual

Safety module

Table of Contents

More on safety technology and PMC SR6?

11.3

Calculation of suitable protective measures – Examples

In order to be able to assess and calculate the suitable protective measures necessary for a system,

the accompanying safety-related parts on machine control systems must meet the specified

requirements.

Target for entire system:

Fig. 8: Determining and assessing protective measures

In order to determine the necessary PL for a system, we recommend abiding by a fixed workflow.

Before making the actual calculations, all safety-related components whose failure may interfere with

the activation of the safety functions should be recorded in a schematic diagram.

A block diagram that divides the entire system into individual subsystems can be derived from the

schematic diagram. For each subsystem, the safety-related figures are either taken from the

accompanying manufacturer information or specified sources. If you need to calculate the figures

yourself, the openly available software SISTEMA

The following chapters show the implementation of the STO and SS1-t safety functions based on

example schematic and block diagrams as well as the accompanying calculation of required safety

figures for the individual systems and finally for the entire system.

Software provided free of charge by the German Social Accident Insurance (DGUV) for assessing

safety-related machine control systems and for the standard-compliant calculation of safety figures.

Manual PMC SR6 safety module

1005344-en-US-01

Intern

DIN EN ISO

13849-1

determination

Chapters

Table of Contents