The Allen-Bradley 1606-XL480EP, also cataloged as the 1606-XL480EP Power Supply, operates as a dedicated hardware component for AC-to-DC power conversion and voltage regulation within industrial automation systems.

Hardware Designation Matrix

• 1606-XL480EP: Base switched-mode power supply unit engineered for 24-28 VDC field output execution.
• 1606-XL480EP/B: Spare hardware assembly designation matching equivalent mounting footprint and electrical specifications.

Operational Data & Physical Characteristics

Controller Synchronization & Communication Bus Characteristics

The switched-mode power supply maintains low output ripple and tight voltage regulation to ensure reliable power distribution across PLC racks and remote I/O drops. Maintaining stable DC voltage rail profiles prevents backplane reset triggers, ensuring firmware flash compatibility across linked industrial controllers and preserving EtherNet/IP deterministic network stability without voltage droop disruptions.

Delivered Hardware Package

• 1 x Allen-Bradley 1606-XL480EP Power Supply Unit
• 1 x Terminal Connector Block Set

Enclosure Layout & Electrical Wiring Rules

• DIN-Rail Mounting Rules
  • Snap the unit securely onto a standard 35 mm DIN-rail in a vertical orientation, leaving at least 40 mm vertical clearance above and below for passive thermal convection.
• Input AC Power Cabling
  • Wire primary AC line conductors to terminals L, N, and PE using copper wires rated for at least 75 deg C operation.
• DC Output Terminal Isolation
  • Separate 24-28 VDC output distribution wiring from high-voltage AC mains conduits to avoid electromagnetic interference.
• Earth Ground Connection
  • Connect a heavy-gauge copper grounding strap directly from the chassis protective ground terminal to the main enclosure ground bar.

Technical Engineering FAQs

• What is the maximum continuous DC output current of the 1606-XL480EP?

  The power supply unit delivers a continuous output current of 20 A across its 24-28 VDC output range.

• What input AC line voltages are supported by the primary circuit?

  The module accepts dual input AC voltage ranges of 100-120 VAC (10 A) or 200-240 VAC (5 A) at 50/60 Hz.

• Can the output DC voltage be adjusted on this module?

  Yes, the front panel features a potentiometer allowing the regulated output to be adjusted between 24 VDC and 28 VDC.

• Is hot-swapping permitted for input or output terminals under load?

  No, input AC line power and load circuits must be de-energized before connecting or disconnecting terminal connections.

• What thermal clearances are required for industrial panel installation?

  A minimum clearance of 40 mm above and below the module is required to ensure proper natural convection cooling.

• How does stable DC supply voltage protect controller firmware functions?

  Regulated DC rails prevent sudden voltage dips that can corrupt memory transfers or trigger unexpected PLC processor resets.

• Does the 1606-XL480EP/B revision match the original specification?

  Yes, the 1606-XL480EP/B spare model shares identical physical mounting, voltage output, and current capacity specs.

• What is the nominal output power capacity of this unit?

  The power supply is rated for 480 W nominal output power continuous operation in industrial panel enclosures.