Light curtains and light grids are active, optoelectronic protective devices. They serve as zone protection devices in the field of automation. It prevents people from entering/coming into contact with unprotected areas (e.g. finger and hand protection, access prevention or horizontal danger zone protection).

SIGUARD Light Curtains and Grids 3RG784 for Cat. 2 Applications

Type 2 according to IEC/EN 61496-1, -2 or Cat. 2 according to EN 954-1
SIGUARD light curtains 3RG7841 with evaluation unit
Resolutions of 30, 55 and 80 mm
Protective field heights of 150 to 1800 mm
Ranges from 0.3 to 6 m
SIGUARD Light Curtains and Grids 3RG784 for Cat. 4 Applications
Light curtains Type 4 according to IEC/EN 61496-1, -2 or Cat. 4 according to EN 954-1
SIGUARD light curtains and light grids 3RG7842 with evaluation unit
SIGUARD light curtains and light grids 3RG7844 with integrated evaluation
SIGUARD Transceiver 3RG7844 with integrated evaluation
Resolutions with 14, 30, 50 and 90 mm or 2, 3 or 4-beam light grilles
Protective field heights of 150 to 3000 mm
Ranges from 0.3 to 6 m or 0.8 to 18 m for light curtains and 0.8 to 18 m or 6 to 60 m for light grids

SIGUARD Light Curtains and Grids 3RG7844 with integrated evaluation for Cat. 4 Applications

Standard function package
including startup testing, startup/restart inhibit, protection control, multi-scan, 2 transmission channels and local interface
Blanking function package
Standard function package + fixed and floating blanking, reduced resolution
Muting function package
Standard function package + muting
Sequencing function package
Standard function package + sequencing control function

Outputs for all function packages

Semiconductor outputs with cable gland
Output Relay with Hirschmann connector
AS-Interface port

Configuration

Manual configuration over DIP switch/safety key
Cascading of master and slave devices
Connection of local devices (start key, EMERGENCY STOP switch, local interface (M12 socket))
Two transmission channels
Expanded display (2x7 segments)
Transmission of configuration data over plug-in configuration card

Perimeter Guarding with Single-Beam Safety Light Sensors

The 3RG782 series of light barriers can be used for applications involving Categories 2 or 4. When combined with the 3RG7825 evaluation unit, the 3RG7823 light barriers, Category 2, allow functions such as start/restart inhibit and contactor monitoring to be implemented. We recommend the 3RG7847 evaluation units for muting functions and for combining with the 3RG7824 light barriers, Category 4.

3RG7823 Light Barriers for Category 2

Range 0 to 150 m
Degree of protection IP65
Connection via M12 connector
Integrated heating for the optical system

3RG7823 Light Barriers for Category 4

Range 0 to 60 m
Degree of protection IP65
Frequency-modulated infrared light
Integrated dirt accumulation monitoring using an LED
Integrated heating for the optical system
High mechanical and chemical resistance thanks to the glass optical system