Catalogs > Safety Products Catalog > Presence Sensing Safety Devices > Opto-electronics > Safety Light Curtains > Overview
Overview
| GuardShield™ |  |
GuardShield Safe 4 | |
GuardShield Safe 2 | |
Perimeter Access Control (PAC) | |
Perimeter Access Control Overview | |
Typical System Configurations
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:
| 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 |
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