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Description
Technical Specifications
| Product Model | 1606-XL480EP |
|---|---|
| Manufacturer | Rockwell Automation / Allen-Bradley |
| Product Type | Switched-Mode DC Power Supply Module (Bulletin 1606-XL EP Series) |
| Rated Output Power | 480 W |
| Rated Output Current | 20 A @ 24 V DC |
| Output Voltage Range | 24 V DC (adjustable 24.0 – 28.0 V DC via front potentiometer) |
| Input Voltage (AC) | 85 – 264 V AC (auto-ranging), 47 – 63 Hz; single phase |
| Power Factor Correction (PFC) | Active PFC, typical PF > 0.95 @ 230 V AC full load |
| Typical Efficiency | 93 % – 95.6 % depending on load and input voltage |
| Output Ripple / Noise | < 50 mV peak-to-peak (typical) |
| Parallel / Redundancy Capability | Up to 10 units in parallel; N+1 redundancy with external diode module |
| Status Indication | Green LED (DC OK), floating NPN/PNP-compatible relay contact (DC-OK fail signal) |
| Protection Functions | Short-circuit, overload (constant current mode with auto-recovery), overvoltage, overtemperature |
| Mounting | 35 mm DIN rail (EN 60715) or optional wall-mount bracket |
| Dimensions (H × W × D) | Approx. 124 mm × 82 mm × 127 mm (4.88″ × 3.23″ × 5.00″) |
| Operating Temperature | -25 °C to +70 °C (derating above +60 °C) |
| Ingress Protection | IP20 (touch-safe terminals per EN 50178 / UL 508) |
Main Features and Advantages
The Allen-Bradley 1606-XL480EP offers a number of differentiating features that set it apart from standard industrial power supplies, particularly in mission-critical applications requiring high availability and flexible system scaling.Wide-range input with active PFC: The universal AC input (85–264 V AC) allows the same unit to be deployed globally without manual voltage selection. Integrated active power factor correction minimizes harmonic distortion and improves overall energy efficiency, especially important in panels with multiple high-power electronic devices.Adjustable 24–28 V DC output: The front-panel potentiometer enables fine-tuning of the output voltage to compensate for voltage drop across long cable runs or to match the charging requirements of 24 V battery-backed buffer modules. This ensures connected loads always receive their specified operating voltage.Parallel operation and N+1 redundancy: Unlike many standard PSUs, the Allen-Bradley 1606-XL480EP is designed for parallel sharing—up to ten units can be connected in parallel for higher current capacity. When paired with an Allen-Bradley 1606-XLCPS or 1606-XLRED redundancy module, it forms a true N+1 redundant power system where a single unit failure does not interrupt downstream power, dramatically improving mean time between failures (MTBF) for critical processes.Comprehensive electronic protection: Built-in short-circuit, overload (hiccup-mode with auto-restart), overvoltage crowbar, and thermal protection safeguard both the power supply and the connected load. In the event of a fault condition, the DC-OK relay contact opens, allowing immediate alerting via the PLC or panel-mounted alarm.Diagnostic feedback: The dry DC-OK relay contact and front LED give clear, immediate visual and electrical indication of operational status, facilitating faster troubleshooting during commissioning and maintenance.Convection cooled, fanless design: Elimination of forced-air cooling prevents dust and conductive particle ingestion, extends service life in harsh environments, and reduces audible noise inside the enclosure.Together, these attributes make the Allen-Bradley 1606-XL480EP a future-proof choice for system designers who require scalable, diagnosable, and highly reliable 24 V DC power distribution.
Application Field
The Allen-Bradley 1606-XL480EP is widely deployed across discrete manufacturing, process industries, packaging lines, material handling systems, water/wastewater treatment plants, and building automation infrastructures wherever a stable, high-current 24 V DC supply is required for control and field devices. It is particularly well-suited to power Rockwell Automation ControlLogix and CompactLogix processor racks, Point I/O and ArmorBlock distributed I/O stations, PanelView Plus terminals, safety relays, and extensive sensor/actuator networks within a single control panel.In applications where unplanned downtime carries significant cost—such as automotive assembly lines, pharmaceutical batch processes, or continuous-flow production—the Allen-Bradley 1606-XL480EP is often specified for its parallel/redundant capability, allowing engineers to design N+1 redundant power architectures that maintain uninterrupted 24 V DC even during a power supply module replacement. Its wide input voltage tolerance also makes it suitable for regions with unstable mains or for OEM machinery exported to multiple international markets.Additionally, the Allen-Bradley 1606-XL480EP finds application in test benches, semiconductor fab auxiliary equipment, and food & beverage packaging machines where the combination of IP20 touch safety, compact footprint, and high conversion efficiency supports dense panel layouts and compliance with industry hygiene and safety standards. When used in conjunction with Allen-Bradley buffer or redundancy modules, it becomes part of a complete power continuity solution for safety-rated and high-availability automation systems.
Related Products
- 1606-XL240E — Lower-power 240 W (10 A) version of the XL series with similar EP features; suitable for smaller panels or individual I/O island powering.
- 1606-XL120E — 120 W (5 A) variant in the same 1606-XL EP family; compact option for powering small PLCs and local sensor clusters.
- 1606-XL480DR — 480 W power supply in the XL series without EP suffix; lacks parallel operation capability and has slightly different feature set compared to the 1606-XL480EP.
- 1606-XLRED — Dedicated N+1 redundancy module (diode decoupler) for use with the 1606-XL480EP to build redundant 24 V DC power systems.
- 1606-XLCPS — Buffer capacitor module compatible with the 1606-XL series; bridges short-duration mains interruptions (typically 20–500 ms depending on load).
- 1606-XLBAT — 24 V DC battery backup module designed to work with the 1606-XL series for extended hold-up time during prolonged power outages.
- 1756-PA72/C — ControlLogix chassis power supply (220 V AC input); unrelated electrically but often specified in the same control cabinet as the 1606-XL480EP for field device power.
- 1769-PA4 — CompactLogix chassis power supply; commonly paired in systems where the 1606-XL480EP supplies external 24 V DC to distributed I/O.
