Siemens SIRIUS 3SK1 Manuale di istruzioni - Pagina 9

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3SK1..1 safety relays (devices with contacting outputs):

In continuous operation, the key safety values apply where the function test interval (state

change of the outputs) for SIL2 ≤ 1 year and for SIL3 ≤ 1 month.

Exception: A function test interval ≤ 1 year is also permissible for SIL3 applications in the

process industry (in accordance with IEC 61511), exclusively for low-demand use, due to a

significantly lower failure rate/probability of the electromechanical components. This does not

apply to safety-related applications in accordance with the Machinery Directive 2006/42/EC.

Function test procedure:

• Actuate the connected sensors.

• Check their effect on the safety relay and the downstream actuators.

• Activate the safety relay via the connected sensors.

• Check their effect on the safety relay and the downstream actuators.

• Replace the defective devices.

2.3

Intended use

Hazardous voltage

Proper use of hardware products

This equipment is only allowed to be used for the applications described in the catalog and in

the technical description, and only in conjunction with non-Siemens equipment and

components recommended by Siemens.

Correct transport, storage, installation and assembly, as well as careful operation and

maintenance, are required to ensure that the product operates safely and without faults.

EU note: Commissioning is absolutely prohibited until it has been ensured that the machine in

which the component described here is to be installed complies with the stipulations of the

Directive 2006/42/EC.

2.4

Siemens provides products and solutions with industrial security functions that support the

secure operation of plants, systems, machines and networks.

In order to protect plants, systems, machines and networks against cyber threats, it is necessary

to implement – and continuously maintain – a holistic, state-of-the-art industrial security

concept. Products and solutions from Siemens constitute one element of such a concept.

Customers are responsible for preventing unauthorized access to their plants, systems,

machines and networks. Such systems, machines and components should only be connected to

SIRIUS 3SK1 Advanced Safety Relays - special versions

Configuration Manual, 03/2022

WARNING

Safety instructions

2.4 Security information