Page 332 - Wago_AutomationTechnology_Volume3_2015_US.pdf

4 Functional Safety

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Housing Design 750/753 Series
Dimensions (mm) 12 or 24 x 65 x 100
W x H x L (Height from upper edge of the DIN-rail)
Wire connection CAGE CLAMP ®
Cross sections 0.08 mm² ... 2.5 mm² / 28 ... 14 AWG
Strip lengths 750 Series: 8 ... 9 mm / 0.33 in.
753 Series: 9 ... 10 mm / 0.37 in.

Functional Safety
In the European Union, the machinery directive defines the requirements for
machine and system safety. This ensures a uniform standard for the protection
of “life and limb” for people within a machine’s operating area.

The required risk assessment is based on harmonized standards (e.g., EN
13849) that identifies existing risks and required risk reduction (SIL or PL MRL 2006/42/EG
quality). Based on the risk assessment, safety functionality can be implemen- EC Machinery Directive
ted, e.g., by presence detection or protection zone violations using secure
IEC 61508 ISO 12100-1 IEC 60204-1
switches or light arrays to immediately shutdown the “risk”. For this purpose, ISO 14121 Safety of
Basic Safety of machinery - electrical
the safety signals are detected by the “yellow” safety modules and trans- Standards Design Principles Equipment
mitted via “PROFIsafe” to the F-SPS for further processing. The result is then
EN ISO 13849 EN IEC 62061 IEC 61326-3-1 IEC 61511
executed via a safe actuator (output module, controller, etc.). Safety Related
Part of Safety of EMV Safety of
Machinery Machinery Process Industry
The unique safety characteristic values of the WAGO modules facilitate cal-
IEC 61131-6 IEC 61800-5-2
culation of the final safety function up to Cat. 4/PLe according to EN 13849,
Safety for PLC Safety for Drives
or SIL3 according to EN 62061 or IEC 61511.