Allen-Bradley 1606-XLERED Redundancy Module

The Allen-Bradley 1606-XLERED, also cataloged as the 1606-XLERED Redundancy Module, operates as a dedicated hardware component for DC power path redundancy management within Bulletin 1606 power distribution systems. The module accepts DC input sources and combines redundant supply channels to maintain uninterrupted 24 VDC load delivery.

Hardware Specifications

I/O Power Distribution and Redundancy Architecture

The 1606-XLERED is intended for redundant DC power architectures where two independent power supplies feed a common load. The module electrically isolates power sources from each other while allowing current delivery to downstream PLC processors, communication modules, and I/O assemblies. In high I/O density installations, the redundancy configuration minimizes the effect of a single power supply failure on the control system power bus.

Frequently Asked Questions (FAQ)

Q: Is the 1606-XLERED a standalone power supply?
A: No. The module functions as a redundancy module and is designed to operate with external DC power supplies.

Q: Does the module accept AC input voltage?
A: No. The specified operating input is DC voltage only.

Q: What is the purpose of the DC-OK signal?
A: The DC-OK output provides status indication of the DC power condition for monitoring or diagnostic functions.

Field Installation Guidelines

• Install the module on a grounded DIN rail or approved mounting surface.

• Connect redundant power supplies using conductors sized for the expected load current.

• Verify polarity before energizing the system; reverse polarity may damage connected equipment.

• Route DC power conductors separately from communication and signal wiring where practical.

• Ensure all terminal connections are securely tightened according to applicable installation practices.

• Maintain adequate enclosure ventilation to prevent localized temperature rise.

• Inspect DC-OK status indication after commissioning to confirm proper power path operation.