Allen Bradley 440R / GuardLocking Safety Monitoring Safety Relay, 24V dc, Dual-Channel, 1 Safety Contacts

The Guardmaster GLP safety relay has been developed specifically for guard locking applications, it helps OEMs reduce design and installation time for standstill or slow-speed guard locking applications. Using two proximity sensors as inputs it monitors motion and unlocks a gate when equipment reaches a safe speed.
The GLP safety relay is designed to meet international safety standards, such as EN ISO 13849-1 and EN 62061. It features a patented, single-wire communication capability that helps eliminate the need for dual-channel connection between relays. Safety functions can be expanded and cascaded up to a safety integrity level (SIL) 3 rating using a single wire to connect between relays thus reducing installation time.

For standstill or slow-speed monitoring and guard locking
2 PNP proximity sensor inputs with 2 additional inputs for lock request and door monitoring
Versatility through simple logic, reset and speed monitoring configurations
Single-wire safety relay connection allows for ease of installation and system flexibility
Terminals are grouped together for power, inputs and outputs for clear connection
A global safeguarding solution that meets all applicable directives and is third-party tested and approved

PLd and CAT3 per ISO13849-1, SIL CL2 per IEC 61508.

UL, TUV.

Address issues in your industrial processes quickly with this safety relay from the Allen Bradley Guardmaster range from Rockwell Automation. It features two proximity sensors that monitor the speed of equipment, ensuring that protective measures only lift when operator safety is assured. With its integrated LED lights, the relay indicates when the guard lock is switched on to keep surrounding personnel informed about appliance status and emerging faults.

• Electrical terminals grouped by function for quick wiring, saving time during installation
• Response rate of 27ms to boost the efficiency of automated processes
• Both automatic and manual reset modes available to best suit the demands of your application
• Slow-blow 4A fuse tolerates short periods of excess current before breaking the circuit, making the relay ideal for applications with limited calculated overcurrent

• EN 62061 (European Norm)
• CE (Conformitè Europëenne)
• UL (Underwriters' Laboratory)

A guard lock prevents protective devices surrounding machinery from moving until it's safe to disengage or remove them. This optimises mechanical efficiency while maintaining operator safety.