1. Product Sub-families
• 440R-SI / CI (Single-function)
– 22.5 mm DIN-rail housing, screw or spring terminals.
– 24 V DC supply, 2 safety NO contacts + 1 signaling contact.
– Rotary switches set auto / manual / monitored reset and AND/OR logic—no software.
• 440R-EMD (Expansion / Time-delay)
– Adds 4 instantaneous or delayed outputs (0…30 s) to SI/CI.
– Cascadable for multi-zone control while maintaining SIL 3 / PL e.
• 440R-MSR6R / T (Speed-monitoring)
– 6 A contacts, 24 V DC, built-in PNP/NPN encoder input for zero-speed or overspeed detection.
• GuardLink versions (440R-ENET, 440R-CCL, etc.)
– Single-cable daisy-chain links GuardLink devices; dynamic-pulse protocol keeps SIL 3 / PL e.
– Diagnostic and I/O data via EtherNet/IP, CIP Safety, or CC-Link IE Field.
2. Common Specifications
• Contact sets: 2–3 safety NO + 1 NC auxiliary (dual-channel cross-monitoring on selected models).
• Removable spring or screw terminals for quick replacement.
• Ambient: –5…+55 °C, 90 % RH non-condensing; 10 g shock, 10…55 Hz vibration.
• Certifications: c-UL-us, CE, C-Tick, TÜV SIL 3 / PL e / Cat 4.
3. Typical Applications
• E-stop circuits: one 440R-SI monitors dual-channel E-stop buttons.
• Safety gate interlocking with 440G-MT switches.
• Zero- or over-speed protection using MSR6R/T.
• Partitioned production lines: GuardLink reduces wiring by ~70 %.
4. Selection Guide
• Simple single function → 440R-SI/CI (suffix 17/18/19 for terminal / coil options).
• Need delayed or multiple outputs → 440R-EMD.
• Need speed monitoring → 440R-MSR6R/T.
• Need networked diagnostics → GuardLink series (440R-ENET, 440R-CCL).
Official Literature
• 440R-IN016A-EN-P – MSR57P Speed Monitoring Safety Relay
• 440R-UM015C-EN – GuardLink System User Manual
• 440R-UM004 – GuardMaster General Installation Manual
Configuration via rotary switches or GuardLink software can be completed in minutes, dramatically reducing commissioning time.
