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EN/IEC 61496-1

EN/IEC 61496 "Safety of machinery – Electrosensitive protective equipment – Part 1: General requirements and tests" establishes a clear relationship between type classes for electrosensitive protective equipment (ESPE) and the Safety Integrity Level (SIL – in accordance with IEC 62061) / Performance Level (PL – in accordance with ISO 13849). This relationship is defined as follows:

Can be used in applications in accordance with Type 1 Type 2 Type 3 Type 4
EN ISO 13849-1   PL c PL d PL e
EN/IEC 62061   SIL 1 and
SIL CL 1
SIL 2 and
SIL CL 2
SIL 3 and
SIL CL 3

Accordingly, Type 2 light grids may only be used in applications with Performance Level c. Type 3 devices are assigned to Performance Level d and Type 4 devices may continue to be used in Performance Level e. If a machine's risk assessment results in a safety function with PL = d, then Type 3 light grids are required (PSENopt II). This change is legally binding from 10 May 2015.


How does this standard affect the light beam devices PSENopt from Pilz?

Depending on the requirement, the light beam devices PSENopt provide finger, hand and body protection in accordance with EN/IEC 61496-1 and are suitable for all applications in accordance with Type 2, Type 3 and Type 4. The table below provides an overview of the product range and the corresponding SI Level and Performance Level:

Type PSENopt PSENopt Advanced PSENopt II
Resolution Finger, hand, body protection as well as access protection Finger and
hand protection
Finger and hand protection
Approved to
EN/IEC 61496-1/-2
(PSENopt II:
EN/IEC 61496-1)
Type 2 Type 4 Type 2 Type 4 Type 3
Can be used in applications in accordance with EN ISO 13849-1 EN/IEC 62061 PLc
SIL CL 1
PLe
SIL CL 3
Pl c
SIL CL 1
PLe
SIL CL 3
PLd
SIL CL 2
Functions/features Feedback loop monitoring, reset, acknowledgement, diagnostics Feedback loop monitoring, reset, acknowledgement, diagnostics and muting, blanking, cascading Diagnostics


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