Allen-Bradley 1606-XL60DR Redundant PSU

Allen-Bradley 1606-XL60DR 60W Redundant Power Supply

Product Introduction

The 1606-XL60DR belongs to the Allen-Bradley Bulletin 1606-XL legacy power supply family. This redundant version includes an integrated decoupling diode for parallel operation. Specifically, two units can share load while isolation prevents backfeed between them.

Engineers select it for small control systems requiring fault tolerance. Additionally, the NEC Class 2 rating limits output energy for safer field wiring. The unit carries UL 60950-1, cUL, and CE approvals.

However, buyers should note the lifecycle status. Rockwell discontinued this model on December 31, 2020. Therefore, current stock serves maintenance and replacement needs only.

Technical Specifications

The 1606-XL60DR accepts single-phase AC input across a wide range. Specifically, input voltage spans 85...264V AC nominal, covering global supply standards without range switching.

Output voltage is fixed at 24V DC nominal. Output current reaches 2.5A nominal, yielding 60W rated power. The integrated decoupling diode enables true redundancy when paired with a second supply.

A DC OK relay output provides status feedback to monitoring systems. Meanwhile, the NEC Class 2 classification restricts output power per circuit, which simplifies field wiring compliance. No communication ports exist on this unit. Therefore, it serves purely as a power conversion device without protocol support.

Mechanical and Environmental Parameters

Dimensions measure 49 × 124 × 102 mm (W×H×D). The compact housing fits standard DIN rail layouts, and the unit weighs approximately 470 g without packaging.

Operating temperature ranges from -10 to +70°C. The open-frame construction requires enclosure mounting. Besides thermal limits, the IP20 protection rating suits cabinet installation only. Rockwell does not publish storage temperature or humidity figures for this legacy series.

Installation Guide

First, verify the DIN rail is clean and securely fastened inside the cabinet. Next, snap the 1606-XL60DR onto the rail until the latch clicks. Then connect input wiring to the terminals per the wiring diagram.

For redundant operation, wire two units in parallel through their decoupling diodes. Specifically, connect both outputs to a common DC bus. Next, connect the DC OK relay to your monitoring circuit. Finally, verify output voltage with a meter before connecting loads.

Ensure adequate ventilation around each unit. Moreover, keep clearance above and below the housing for convection cooling. Since this model is discontinued, verify stock availability before designing it into new systems.

Packaging List

• 1 × Allen-Bradley 1606-XL60DR Redundant Power Supply

• 1 × Installation Instruction Sheet

• 1 × DIN Rail Mounting Clip (pre-installed)

• Protective foam and carton packaging

Shipping methods: Fedex, UPS, DHL.

FAQ

Q1: What does the integrated decoupling diode do?
A: The diode isolates parallel-connected supplies from each other. Therefore, a failed unit cannot drain the shared DC bus or damage its partner.

Q2: Can I use the 1606-XL60DR in new designs?
A: Rockwell discontinued this model in December 2020. Consequently, consider it for maintenance and replacement only, since no direct replacement is planned.

Q3: What is the benefit of the NEC Class 2 rating?
A: Class 2 limits output energy to safer levels. Specifically, field wiring requirements become simpler under NEC rules.

Q4: What input voltage does this supply accept?
A: It accepts 85...264V AC single-phase. This wide range covers most global mains standards without configuration changes.

Q5: Does this power supply include communication ports?
A: No. The 1606-XL60DR has no communication interface. It operates as a standalone redundant power unit without protocol support.