Allen-Bradley 1606-XL480EP – 480W Industrial Power Supply | Bulletin 1606 XL Enhanced Performance Series
Engineering Background
The Allen-Bradley 1606-XL Series represents Rockwell Automation’s flagship line of industrial power supplies, engineered specifically for demanding automation environments where uptime is non-negotiable. The 1606-XL480EP delivers a continuous 480 watts of regulated 24 VDC output, making it the preferred choice for powering PLCs, I/O racks, HMIs, and distributed control nodes in heavy industrial installations.
Product Positioning
Designed for system integrators and plant engineers who require a single, high-capacity power supply to consolidate multiple 24 VDC loads, the 1606-XL480EP eliminates the need for parallel derating configurations. Its Enhanced Performance (EP) designation indicates extended hold-up time and reinforced EMC filtering — critical for installations adjacent to variable-frequency drives, servo amplifiers, and high-current contactors.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Catalog Number | 1606-XL480EP |
| Series / Platform | Bulletin 1606 XL Enhanced Performance |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Output Power | 480 W (continuous) |
| Output Voltage | 24 VDC (adjustable 24–28 V) |
| Output Current | 20 A |
| Input Voltage Range | 85–264 VAC (universal), 120–375 VDC |
| Input Frequency | 47–63 Hz |
| Input Current (typical) | ≤ 6.5 A @ 120 VAC; ≤ 3.2 A @ 230 VAC |
| Efficiency | ≥ 91% (typical at full load) |
| Hold-Up Time | ≥ 20 ms @ 100% load, 120 VAC |
| Ripple & Noise | ≤ 150 mV peak-to-peak |
| Regulation (line + load) | ≤ ±1% |
| Inrush Current | ≤ 30 A (cold start, 230 VAC) |
| Mounting | DIN rail (EN 60715 TH35) / panel mount |
| Operating Temperature | -25°C to +70°C (derating above 60°C) |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | 5–95% RH, non-condensing |
| Protection Class | IP20 |
| Dimensions (W × H × D) | Approx. 60 × 130 × 125 mm |
| Weight | 2.3 kg |
| Certifications | UL 508, CE (EN 61204-3), cUL, ATEX Zone 2 |
| MTBF | > 500,000 hours (MIL-HDBK-217F) |
| Warranty | Rockwell Automation standard (1 year) |
Proven Application Environments
- Automotive manufacturing: Powering ControlLogix / CompactLogix PLC racks on body-in-white and paint-shop lines where 480 W single-supply consolidation reduces panel footprint.
- Oil & gas upstream: ATEX Zone 2 rating permits installation in classified areas; wide-range AC input accommodates generator-backed supplies with ±15% voltage excursions.
- Water & wastewater treatment: Long hold-up time bridges momentary grid interruptions common in pump-station environments, preventing nuisance PLC restarts.
- Semiconductor fab: Low ripple (<150 mV p-p) and tight regulation (±1%) protect sensitive I/O modules and vision systems from noise-induced faults.
- Food & beverage: IP20 enclosure suits control-panel mounting; stainless-compatible DIN rail installation aligns with hygienic design requirements.
- Building automation / HVAC: Universal AC input (85–264 VAC) simplifies global deployment across 100 V and 230 V infrastructure.
Engineering Advantages
- Single-supply 480 W capacity — eliminates parallel derating, reduces wiring complexity, and frees panel space versus dual 240 W units.
- Enhanced Performance (EP) filtering — integrated EMC filter and active PFC suppress conducted emissions to CISPR 11 Class B, protecting adjacent instrumentation.
- Extended hold-up ≥ 20 ms — exceeds IEC 61000-4-11 Class 3 immunity, bridging voltage dips without triggering PLC fault states.
- Wide-range universal input — single SKU covers 85–264 VAC global infrastructure; no tap switching required.
- Adjustable output 24–28 VDC — compensates for long cable runs and voltage drop in distributed I/O architectures.
- Parallel & redundancy capable — supports N+1 redundancy with optional 1606-XLRED redundancy module (no additional diode required).
- Diagnostic LED & relay contact — DC OK signal (relay output) enables PLC-level power monitoring and predictive maintenance integration.
- ATEX Zone 2 / Class I Div 2 — certified for hazardous-area panel installations without additional barriers.
System Architecture & Signal Flow
The 1606-XL480EP operates as a switch-mode power supply (SMPS) with active power factor correction (PFC) front-end:
- AC Input Stage: EMC filter → bridge rectifier → bulk capacitor bank (PFC-corrected, PF > 0.95).
- DC-DC Conversion: High-frequency LLC resonant converter (typ. 100–200 kHz) → transformer isolation → synchronous rectification.
- Output Regulation: Optocoupler feedback loop → PWM controller → ±1% regulation across full load and line range.
- Protection Circuits: OVP (overvoltage), OCP (overcurrent / constant-current limiting), OTP (overtemperature), SCP (short-circuit, auto-restart).
- DC OK Signal: Relay contact closes when Vout > ~21 V; opens on fault — wire to PLC digital input for supervisory monitoring.
- Load Distribution: Single 24 VDC bus feeds PLC backplane, remote I/O, HMI, and field devices via appropriately rated branch fusing.
Sourcing & Quality Verification
- Origin: Genuine Allen-Bradley / Rockwell Automation production; sourced through authorized distribution channels.
- Condition: New-in-box (NIB) or factory-refurbished units clearly labeled; all refurbished units include full functional test report.
- Traceability: Each unit ships with Rockwell Automation date code, lot number, and country-of-origin documentation.
- Inspection: Pre-shipment electrical verification — output voltage, load regulation, ripple, and DC OK relay function tested against OEM datasheet limits.
- Counterfeit prevention: Holographic label, PCB revision markings, and firmware version verified against Rockwell Automation product authentication database prior to dispatch.
Procurement Process
- Confirm quantity & condition — contact Konmask via the product page or email to verify current stock, lead time, and NIB vs. refurbished availability.
- Request quotation — volume pricing available for orders ≥ 5 units; OEM project pricing available with end-user documentation.
- Place order — secure checkout via Konmask.com; wire transfer, credit card, and PayPal accepted; export documentation (CO, packing list, commercial invoice) included.
- Shipping — DHL Express / FedEx International Priority standard; EXW Xiamen available for freight-forwarder consolidation.
- After-sales — 30-day DOA replacement guarantee; technical support via email or WhatsApp for installation commissioning questions.
Technical FAQ
Q: Can the 1606-XL480EP be paralleled with another unit for 960 W output?
A: Yes, with the 1606-XLRED redundancy module. Direct paralleling without the module is not recommended as it may cause current-sharing instability.
Q: What is the derating curve above 60°C?
A: Output power must be derated linearly from 480 W at 60°C to 0 W at 70°C (approximately 48 W/°C). Ensure adequate panel ventilation above 60°C ambient.
Q: Is the DC OK relay contact rated for PLC input modules?
A: Yes — the relay contact is rated 30 VDC / 1 A, compatible with standard 24 VDC digital input modules. Use a series resistor if the input module requires current limiting.
Q: Does this unit support 48 VDC input (telecom bus)?
A: No. The 1606-XL480EP accepts 85–264 VAC or 120–375 VDC only. For 48 VDC input applications, refer to the 1606-XLP series.
Q: What is the typical lead time from Konmask?
A: In-stock units ship within 1–3 business days. Out-of-stock items typically have a 2–4 week lead time depending on sourcing channel.
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