Specifications

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Publication S117-CA001A-EN-P
Presence Sensing Safety Devices
Safety Light Curtains
2-12
Overview
General Principles
2-Opto-electronics
Safety Switches Operator
Interface
Logic Power
R
1. Optic heads (operate on 24V DC) with muting module—ordered
as a pair (transmitter/receiver)
2. It is also possible to use other Allen-Bradley Guardmaster muting
modules such as the MSR42 or the MSR22LM muting module
3. Power supply
4. Cables for light curtains
5. Muting indication
6. Sensors for muting
7. Sensor accessories
8. Sensor cordsets
Roller Work Path
MSR22LM
Power
Supply
Work
Piece
Work
Piece
Perimeter Access Control Overview
Typical System Configurations
1. Optic heads (operate on 24V DC)—ordered as a pair
(transmitter/receiver)
2. Cables—5-pin cables for transmitter and receiver
3. Safety relay
4. Power supply—120V AC to 24V DC
5. Mounting brackets—minimum of 4 per optic head pair
6. Corner mirror columns (for multiple side protection)
7. Mounting stand if required
1
2
3
4
5
6
Roller Work Path
MSR22LM or MSR42
Power
Supply
Work
Piece
Work
Piece
Components Required for PAC with Muting, see Figure 4:
The Allen-Bradley Guardmaster Safe 4 PAC safety light curtain
system is a two box design. This means the safety light curtain does
not need a separate controller to operate in a guard-only mode.
Therefore, the safety outputs of the light curtain (OSSDs) can be
connected directly to any safety relay that will accept PNP inputs.
The following are some common configurations of light curtain
systems. The numbers on the drawing indicate the ordering steps to
follow to ensure that a complete system is specified.
Components required for a multiple-beam Safe 4 PAC, see
Figure 5:
Figure 5