Allen-Bradley Guardmaster SensaGuard RFID-based safety switches

The Allen-Bradley Guardmaster SensaGuard range is designed to provide secure safety switching, diagnostics and monitoring in one package. Combining RFID coding with an M23 Safety Distribution block, SensaGuard is designed to simplify the integration of multiple sensors.

RFID coding provides an additional level of security, allowing a SensaGuard switch and actuator to be paired with a specific code. This enhances safety by reducing the possibility of other actuators being used to bypass the switch.

The switch is paired with an actuator on initial power-up and can be locked to this unit immediately. If some flexibility is required, the switch can be re-paired to another actuator up to eight times. After the eighth time, it is locked to the last-paired actuator. At any time during the pairing process, the switch can be locked to a specific actuator permanently.

When multiple sensors are installed, the use of the Allen-Bradley M23 Safety Distribution block helps simplify integration. Available with either four or eight ports, the Safety Distribution block provides the ability to connect up to eight SensaGuards to meet Cat4/SIL3/PLe, with an individual auxiliary contact from each device going back to the control panel. This provides specific diagnostic information for each door or device to the control system. The LEDs on the distribution block provide additional local diagnostic information for troubleshooting. Shorting plugs for unused ports, variable length 19-pin patchcords and 8-pin cordsets are available to provide full connectivity and circuit safety.