Allen‑Bradley – 440R‑EM4R2D – GuardMaster Expansion Module with 4 Delayed Safety

Main Features

• Manufacturer: Allen‑Bradley / Rockwell Automation (GuardMaster series)  

• Model/MPN: 440R‑EM4R2D — expansion module (EMD) for safety relay systems  

• Power Supply: 24 V DC, consumption ~3.5 W  

• Inputs:

  • 1 Single‑Wire Safety (SWS) input for connection to Master relay/mutations  

• Safety Outputs:

  • 4 × Normally‑Open relay contacts, time‑delayed safety outputs—ideal for sequential operations  

• Auxiliary Output:

  • 1 solid-state auxiliary output (diagnostic), with surge current capability  

• Mounting & Connections:

  • 22.5 mm DIN‑rail width, removable screw‑clamp terminals, LED status indicators

• Safety & Certifications:

  • Meets ISO 13849-1 PL e (Cat 4), IEC 61508 SIL 3, and IEC 61496-1 standards  

  • UL recognized, CE marked  

• Environmental:

  • Operating temp: –5 °C to +55 °C; IP40 housing; rugged industrial build  

• Performance Specifications:

  • Aggregate safety output current: up to 6 A; individual output 2 A @24 VDC  

  • Time delay adjustable (~0.05× to 100× scale, max ~300 s) with integrated selector dial