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Description
Technical Specifications
Product Model | 1606-XL480EPManufacturer | Allen‑Bradley / Rockwell AutomationProduct Type | Switched Mode DIN‑Rail Power Supply ModuleNominal Output Voltage | 24 V DC (adjustable 24–28 V DC)Rated Output Current | 20 A @ 24 V DCOutput Power | 480 WInput Voltage (AC) | 100–240 V AC, 47–63 Hz (auto‑ranging)Input Voltage (DC) | 110–250 V DCEfficiency (typ.) | 93–94 % @ 230 V ACRipple & Noise (max) | ≤ 50 mV peak‑to‑peakOutput Voltage Adjustment | +/–10 % via front potentiometerDC‑OK Indication | Green LED + isolated relay contact (NC/NO)Protections | Short‑circuit, overload, overvoltage, overtemperature (auto‑recovery)Operating Temperature | –25 °C to +70 °C (derating applies above 60 °C)Mounting | 35 mm DIN rail (EN 60715), screw‑type terminalsDimensions (H×W×D) | 124 mm × 48 mm × 127 mmWeight | Approx. 0.83 kgIngress Protection | IP20Certifications | cULus Listed, CE, C‑Tick, SEMI F47, Class I Div. 2 (where applicable)
Main Features and Advantages
High‑efficiency power conversion: The 1606‑XL480EP employs active power factor correction and a high‑frequency switching topology to achieve up to 94 % efficiency, minimizing heat generation and reducing cabinet cooling requirements. This directly translates into lower total cost of ownership over the life of the installation.Wide input voltage tolerance: With automatic ranging across 100–240 V AC and DC input capability (110–250 V DC), the 1606‑XL480EP tolerates unstable mains supplies and is equally suited for locations with varying utility power quality or battery‑backed DC bus applications, eliminating the need for site‑specific variants.Stable and clean DC output: The tightly regulated 24 V DC output with < 50 mV ripple ensures sensitive control electronics such as analog I/O cards, encoders, and safety modules receive interference‑free power. The output voltage is user‑adjustable from 24 V to 28 V to compensate for line drops in distributed wiring.Comprehensive electronic protection: The 1606‑XL480EP provides constant‑current overload behavior (no “hiccup” mode under sustained overload), short‑circuit protection with automatic restart after fault clearance, and thermal shutdown with auto‑recovery once the unit cools below the safe threshold. An integrated overvoltage clamp prevents damage to downstream 24 V loads in the rare event of an internal regulator fault.Built‑in diagnostics and remote signaling: A front‑mounted DC‑OK green LED gives immediate local status indication, while the isolated DC‑OK relay contact (rated 60 V DC / 0.3 A or 30 V DC / 1 A) can be wired to a PLC digital input or annunciator panel to trigger alarms on under‑voltage or power loss—critical for predictive maintenance programs.Redundancy and parallel operation readiness: Although the 1606‑XL480EP itself does not contain decoupling diodes, it is fully compatible with Allen‑Bradley 1606‑XLSRED series redundancy modules for N+1 redundant configurations, and multiple units can be paralleled (with proper load sharing setup) to increase total available output power.Industrial‑grade durability: The fanless convection‑cooled design prevents dust ingress and reduces audible noise. The unit meets vibration and shock standards per IEC 60068‑2‑6/ 2‑27 and is housed in a robust metal enclosure rated for pollution degree 2 environments inside a properly ventilated enclosure.
Application Field
The 1606‑XL480EP is purpose‑built to serve as the central 24 V DC power source within industrial control panels and machine enclosures. It is extensively used in Rockwell Automation‑based systems where it powers ControlLogix® / CompactLogix™ chassis backplanes (via 24 V field power), Point I/O racks, PanelView™ Plus terminals, and Kinetix® servo drive auxiliary circuits. Its 20 A continuous rating makes it suitable for medium‑density I/O assemblies, banks of 24 V solenoid valves on packaging machinery, conveyor sensors, barcode readers, and safety light curtains.In process industries, the 1606‑XL480EP is deployed in DCS marshalling cabinets and local instrument junction boxes where stable, low‑noise 24 V supply is critical for analog transmitters and smart field instruments using HART protocol. The DC‑OK contact allows integration into plant‑wide asset monitoring systems so that a failing or de‑energized power supply triggers an early warning before process interruption occurs.OEM machine builders favor the 1606‑XL480EP for its narrow 48 mm width, which conserves valuable DIN‑rail space in compact enclosures, and its global input compatibility simplifies export‑ready machine designs. When configured with an external redundancy module such as the 1606‑XLSRED40, the 1606‑XL480EP forms part of a fault‑tolerant N+1 power architecture for critical continuous‑process applications where unplanned downtime is unacceptable.The unit is equally at home in building automation, material handling, water/wastewater treatment, and food & beverage packaging lines, wherever a reliable, UL‑listed 480 W 24 V DC switched‑mode supply is required.
Related Products
- 1606-XLE480EP — Current active replacement / enhanced version of 1606-XL480EP with improved efficiency (up to 95.6 %) and identical footprint; recommended for new designs.
- 1606-XLE480EPC — Conformal‑coated version of 1606-XLE480EP for harsh or high‑humidity environments requiring extra PCB protection.
- 1606-XLSRED40 — External diode‑based redundancy module for N+1 redundant configuration using two 1606-XL480EP or 1606-XLE480EP units.
- 1606-XLSRED40HE — High‑efficiency redundancy module with lower voltage drop, suitable for parallel/redundant 1606 series power supplies.
- 1606-XLC — Wall‑mounting bracket accessory allowing the 1606-XL series power supply to be mounted directly to a panel wall instead of DIN rail.
- 1606-XL240EP — Lower‑power 240 W (10 A) member of the same 1606-XL series, sharing identical form factor and features for smaller loads.
- 1606-XL120EP — 120 W (5 A) variant in the 1606-XL family for compact control panels with minimal 24 V DC demand.
Installation and Maintenance
Pre‑installation preparation: Before installing the 1606‑XL480EP, verify that the incoming AC supply matches the acceptable input range (100–240 V AC, 47–63 Hz) and that the supply circuit is protected by a minimum B‑10 A or C‑10 A external fuse or circuit breaker. Ensure the DIN rail is securely fastened inside an IP‑rated enclosure and that adequate clearance (≥ 25 mm top/bottom) is maintained for convection cooling. Set the output voltage trim potentiometer to the desired value (typically 24 V) before applying load. All field wiring to the screw terminals of the 1606‑XL480EP must be torqued to the manufacturer’s specification (typically 0.5–0.6 N·m) using appropriately sized conductors.Maintenance recommendations: The 1606‑XL480EP is a solid‑state, maintenance‑free device under normal operating conditions. Periodically inspect the unit for signs of discoloration, loose terminal connections, or accumulated dust on ventilation openings. Verify the DC‑OK LED status during routine walkthroughs; a dark or red/fault indication suggests input power loss or an output fault condition. If the unit enters thermal shutdown due to elevated ambient temperature, check enclosure ventilation and confirm that the installed load does not exceed the derated output current for the ambient temperature. In the event of confirmed internal failure, the entire 1606‑XL480EP module should be replaced—internal components are not field‑serviceable. Keep a spare 1606‑XL480EP or its successor 1606‑XLE480EP on hand for critical process applications to minimize mean time to repair.
