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[simatic sensors] FAIL-SAFE SENSOR-Light Curtains and Grids
°ü¸®ÀÚ (kisystem) | 2008-04-29 | HIT: 18458
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Securing Hazardous Areas
Light Curtains and Grids

 
Undesired and unintended intrusions don¡¯t stand a chance: Our contactless, active optoelectronic light curtains and grids for categories 2 and 4 according to EN 954-1 or type 2 and type 4 according to IEC/EN 61496-1 protect operators at or near machines and systems in operation. Thanks to specially developed integrated circuits (ASICs) and a patented, intelligent analysis process, they are especially fail-safe and highly available. Whether protecting body parts, securing horizontal hazardous areas or the access to larger areas – the widest range of functions such as start and restart locking, contactor monitoring, jog control or blanking allow for many different applications. A version for connecting to the AS interface is available.
A light curtain or light grid comprises a transmitter and a receiver, which must be mounted opposite each other. Depending on the resolution and the length, a certain number of transmit and receive diodes are arranged vertically. The infrared LEDs of the transmitter emit short light pulses that are detected by the receive diodes.


3SF7842 light curtains and grids
for category 4 according to EN 954-1 or type 4 according to IEC/EN 61496-1

Resolutions 14, 30, 50 und 90 mm

 Protective fields heights from 150 to 3000 mm

2-, 3- or 4-beam light gird

 Host and quest devices can be cascaded for larger protective field heights and lengths or for an angled arrangement



3RG7844/3SF7844 light curtains and grids with integrated evaluation
for category 4 according to EN 954-1 or type 4 according to IEC/EN 61496-1

Resolutions 14, 30, 50 und 90 mm

 Protective fields heights from 150 to 3000 mm

2-, 3- or 4-beam light gird

 Host and quest devices can be cascaded for larger protective field heights and lengths or for an angled arrangement

PROFIsafe/PROFIBUS DP connection

 Diagnostics and parameterization software SafetyLab can be used for identification and configuration of the function packages blanking, muting and sequential control



3RG7841 light curtains
for category 2 according to EN 954-1 or type 2 according to IEC/EN 61496-1

Resolutions 30, 55 und 80 mm

 Protective fields heights from 150 to 1800 mm

Host and quest devices can be cascaded for larger protective field heights and lengths or for an angled arrangement

Light curtains 3RG7843, with integrated analysis
for category 2 according to IEC/EN 954-1 or type 2 according to IEC/EN 61496-1 (SIL 2)
Light curtains 3RG7846, with integrated analysis
for category 4 according to to IEC/EN 954-1 or type 4 according to IEC/EN 61496-1

Resolutions 20, 30, 40 und 90 mm

 Protective fields heights from 150 to 1800 mm



Standards

EN 61496-1, -2, IEC 61496-1, -2 (requirements for no-contact protective systems)

 EN 999 (shows how to calculate safety distances)

EN 954-1 (safety when near machines and safety-relevant parts of controls)

 EN 61508 (Functional safety of electrical/electronic/programmable electronic safety-related systems)

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