Allen‑Bradley 1606-XLRED20-30 – 24VDC Power Redundancy Module

Core Specifications

• Input Voltage: 12–28 VDC dual independent DC input channels (VIN1 / VIN2)
• Current Rating:
  • Each input channel max 15 A continuous
  • Combined nominal output: 20 A continuous; peak short-circuit 30 A
• Voltage Drop: Typical 0.5 V between input and output (passive diode decoupling)
• Decoupling Technology: Power diode isolation to prevent reverse current between two power supplies
• Terminals: Screw terminal blocks, wire range 12–22 AWG solid/stranded copper
• Mounting: Standard 35 mm DIN rail vertical installation
• Operating Temperature: -10 ℃ ~ +60 ℃ (derate current above 60 ℃)
• Storage Temperature: -40 ℃ ~ +70 ℃
• Weight: Approx. 0.6 kg
• Dimensions: 48 (W) × 124 (H) × 102 (D) mm
• Certifications: UL/cULus, CE, IEC 61010, RoHS compliant

Key Features

1. 1+1 / N+1 power redundant architecture
    
   Two independent 24VDC power supplies feed separate input ports; if one supply fails, the other automatically carries full load without system power interruption.
2. Diode isolation protection
    
   Blocks reverse current flow between the two power sources, avoids damage to intact power unit when one supply short-circuits.
3. Compact slim housing
    
   Narrow width design saves cabinet space, matches the dimension of 1606-XL series power supplies for neat cabinet layout.
4. Full multi-protection circuit
    
   Built-in overcurrent, short-circuit, overheat protection; auto-recovery after fault removal.
5. Status indicator LED
    
   Front panel power status LED for visual monitoring of dual input power availability.
6. Wide compatibility
    
   Matches all 1606-XL series 24VDC industrial power supplies, supports ControlLogix, FLEX I/O, drives, HMI and PLC 24V control power loops.
7. Low power loss under normal operation, minimal heat generation inside control cabinets.

Applications

• Mission-critical automation systems requiring uninterrupted 24VDC control power
• Redundant power configuration for ControlLogix PLC racks, remote FLEX I/O stations
• Pharmaceutical, power generation, water treatment, automotive assembly production lines
• Safety-related equipment, safety relays, safety scanners, emergency stop control circuits
• Equipment with zero downtime requirements, avoiding production halt caused by single power supply failure