Allen-Bradley 1606-XL240DR 24V 10A Redundant PSU
Product Introduction
The 1606-XL240DR is a redundant power supply from the Allen-Bradley Bulletin 1606-XL series. Rockwell designed this 240W class unit with an integrated decoupling diode, so two supplies can share a load without external redundancy modules. Consequently, the architecture saves panel space and wiring effort in critical control systems. Typical applications include process automation, safety instrumented systems, and continuous-production equipment where power continuity matters.
Technical Specifications
The 1606-XL240DR accepts a single-phase AC input spanning 85 to 264 V, covering worldwide mains voltages. Output is 24 V DC nominal at 10 A nominal, yielding a rated power of 240 W. The integrated decoupling diode allows direct parallel connection of two units for redundant operation.
Furthermore, a DC OK relay output provides remote status monitoring to a PLC or alarm circuit. This feature lets maintenance staff detect a failed supply before the backup unit is stressed. Approvals include UL 60950-1, cUL, and CE marking under the official Bulletin 1606 series standard.
No communication ports or protocols exist on this device. Specifically, it is a pure power conversion unit with relay-based status signaling only.
Mechanical and Environmental Parameters
Dimensions measure 124 mm (H) × 120 mm (W) × 102 mm (D), and the unit weighs 0.98 kg. Housing is an open-frame DIN rail construction rated IP20. Operating temperature spans -10 to +70 °C. Storage temperature and relative humidity values are not published for this legacy series.
Installation Guide
First, mount the 1606-XL240DR on a standard DIN rail inside the control enclosure. Next, connect the single-phase input wiring and confirm the voltage falls within 85 to 264 V AC. Then wire the 24V output to the load bus, and parallel a second unit through the integrated diode if redundancy is required. Meanwhile, connect the DC OK relay contacts to the monitoring circuit. Finally, verify the output voltage and relay status after power-up, and tighten all terminals to the datasheet torque.
Packaging List
1 × Allen-Bradley 1606-XL240DR redundant power supply
1 × Installation instruction sheet
Shipping via Fedex, UPS, DHL
FAQ
Q1: Is the 1606-XL240DR still available?
A: Rockwell discontinued this model on December 31, 2020, and lists no planned replacement.
Q2: What makes this unit redundant?
A: It includes an integrated decoupling diode, so two supplies can share a load directly.
Q3: How does the DC OK relay help?
A: The relay output sends status signals to a PLC or alarm, enabling early fault detection.
Q4: What output current does it provide?
A: The unit delivers 10 A nominal at 24 V DC, for a rated power of 240 W.
Q5: Does it offer any communication interface?
A: No. The 1606-XL240DR has no ports or protocols; status reporting uses relay contacts only.
