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1
GFK-2731
Chapter 1 For your safety
1-3
Insulation rating
When selecting the operating equipment, please take into consideration the contamination
and surge voltages, which may occur during operation.
The IC220SDL953 module is designed for surge voltage category II (according to
DIN EN 60664-1). If you expect surge voltages in the system, which exceed the values de-
fined in surge voltage category II, take into consideration additional measures for voltage
limitation.
Installation and
configuration
Please observe the instructions for installing and configuring the system (see
1.3
Safety of the machine or system
The machine/system manufacturer and the operator are solely responsible for the safety
of the machine or system and the implemented application, in which the machine or system
is used. The Machinery Directive must be observed.
Draw up and implement a
safety concept
In order to use the safety module described in this document, you must have drawn up an
appropriate safety concept for your machine or system. This includes a hazard and risk
analysis according to the directives and standards specified in "Directives and standards"
on page 1-4, as well as a test report (checklist) for validating the safety function (see
"Appendix: Checklists" on page B-1).
The target safety integrity level (SIL according to EN 61508, SIL CL according to EN 62061
or performance level and category according to EN ISO 13849-1) is ascertained on the
basis of the risk analysis. The safety integrity level ascertained determines how to connect
and parameterize the safety module within the overall safety function.
Within a VersaSafe system, the IC220SDL953 safety module can be used to achieve
safety functions with the following requirements depending on the conditions of use:
– Up to SIL 3 according to standard EN 61508
– Up to SIL CL 3 according to standard EN 62061
– Up to Cat. 4/PL e according to standard EN ISO 13849-1
Check hardware and
parameterization
Carry out a
validation
every time you make a safety-related modification to your overall
system.
Use your test report to ensure that:
– The safe devices are connected to the correct safe sensors and actuators
– The safe input and output devices have been parameterized correctly
– The safety functions have been wired correctly
WARNING: Depending on the application, incorrect installation and upgrades can
pose serious risks for the user
The user is obliged to design the devices used and their installation in the system
according to these requirements. This also means that existing plants and systems
retrofitted with the VersaSafe system must be checked and tested again in this respect.
Please also refer to "Achievable safety depending on the modules used" on page A-30.