Overview
The Allen-Bradley 440S-SLF8D is a GuardLink-enabled safety relay tap component designed to simplify the integration of safety devices in machine control systems. As part of the GuardLink system, it allows simultaneous or individual lock and unlock of guard locking interlocks in series-connected safety applications. No additional wire from the machine control system is required to lock and unlock the safety gate.
Key Features
- 8-Pin M12 Connector: Industry-standard M12 8-pin connection type with solid-state relay design
- OSSD Output Contacts: Output Signal Switching Device (OSSD) enabled contacts for safe signal switching
- Power to Lock (PTL) Function: Integrated locking capability for guard interlocks without external wiring
- Solid-State Electronics: Electronic solid-state relay type for reliable performance in industrial safety applications
- UL/CUL Certified: Meets ASHRAE 90.1, CULus, UL2043 Plenum, and UL916 standards
Technical Specifications
- Part Number: 440S-SLF8D
- Supply Voltage: 24VDC
- Maximum Current: 4A
- Connector Type: 8-Pin M12 micro connector
- Output Type: OSSD (Output Switching Signal Device)
- Function: Power to Lock (PTL) safety relay tap
- Relay Type: Solid-state electronic relay
- Weight: 0.100 lb
- UPC: 194033617608
- Status: Discontinued by manufacturer
Typical Applications
The 440S-SLF8D is commonly used in:
- Safety gate and guard locking interlock systems
- Series-connected safety device networks
- Machine enclosure access control and locking
- Industrial machinery with safety-rated shut-down requirements
- Integration with GuardLink safety ecosystems for simplified wiring
Compatibility & Replacements
Compatible With
- Allen-Bradley GuardLink safety systems
- OSSD safety-rated control circuits
- M12 connector-based safety modules
- Series-connected safety device architectures
- 24VDC industrial automation systems
Replaces / Drop-In Replacement For
As a GuardLink-enabled component, verify compatibility with your current system integrator before ordering. This unit is discontinued by the manufacturer; alternative safety relay taps may require integration assessment.
Works With
- GuardLink safety relay modules and controllers
- OSSD output signal devices
- M12 connector-compatible safety interfaces
- Rockwell Automation safety systems
- Industrial safety gate interlocks and guard locking mechanisms
