Allen-Bradley 1606-XLS120E DIN Rail Power Supply

Product Details

1606-XLS120E Product Description

The Allen-Bradley 1606-XLS120E is a 120W, 24VDC output DIN Rail-mounted power supply engineered for seamless integration within Rockwell Automation ControlLogix and CompactLogix control architectures. Designed to deliver stable, regulated DC power across demanding industrial environments, the 1606-XLS120E serves as the foundational power layer in multi-tier automation systems — ensuring consistent voltage delivery to PLCs, I/O modules, communication gateways, and field devices across the full control hierarchy. Its wide-range AC input (85–264VAC), high efficiency rating, and active power factor correction make it a preferred choice for system integrators and OEM panel builders targeting long-term reliability in process-critical applications.

In modern industrial control architectures, power supply selection directly impacts system uptime, signal integrity, and maintenance efficiency. The 1606-XLS120E is purpose-built to support layered automation platforms where the power layer must coordinate with the control layer, I/O layer, communication layer, and field device layer without introducing voltage ripple, ground noise, or thermal instability. Its compact DIN rail form factor enables high-density panel layouts, while its diagnostic LED indicators and output OK relay contact simplify commissioning and fault isolation during system startup and periodic maintenance cycles.

The 1606-XLS120E is most effectively deployed as the dedicated power source within a ControlLogix or CompactLogix chassis environment, where it supplies regulated 24VDC to the 1756-L85E or 1756-L83E ControlLogix CPU modules, ensuring that processor clock stability and backplane communication integrity are maintained under variable load conditions. When paired with the 1756-PA75 or 1756-PB75 chassis power supply, the 1606-XLS120E handles field-side 24VDC distribution — decoupling field device power from chassis power and eliminating ground loop interference that can corrupt analog signal chains.

In distributed I/O architectures, the 1606-XLS120E powers FLEX I/O adapter modules such as the 1794-AENT or 1794-ACNR15, as well as Point I/O adapter modules including the 1734-AENT, enabling remote I/O racks to operate with locally regulated power independent of the main panel bus. This architecture improves noise immunity on 4–20mA analog input modules and discrete I/O modules, particularly in environments with variable-frequency drives (VFDs) or large motor starters generating conducted EMI on the AC supply rail.

For EtherNet/IP communication infrastructure, the 1606-XLS120E provides stable power to Stratix 5700 or Stratix 2000 managed industrial Ethernet switches, ensuring that the EtherNet/IP network backbone — connecting the 1756-EN2T or 1756-EN3TR communication modules to SCADA systems and HMI panels — remains operational during AC supply transients. In redundant controller architectures using the 1756-RM2 redundancy module, dual 1606-XLS120E units can be deployed in parallel with diode ORing to provide N+1 power redundancy at the field distribution level, eliminating single-point power failure risk.

HMI integration is equally supported: the 1606-XLS120E reliably powers PanelView Plus 7 terminals (2711P series) and PanelView 800 graphic terminals, which require stable 24VDC with low ripple for touchscreen controller operation and display backlight longevity. In safety-instrumented system (SIS) segments, the 1606-XLS120E can supply 24VDC to GuardLogix 1756-L71S safety controllers and 1791DS safety I/O modules, provided the power supply output is monitored via the Output OK relay contact wired into the safety PLC's diagnostic input channel.

Contextual Integration: The 1606-XLS120E is designed for contextual integration across the full Rockwell Automation ecosystem — from ControlLogix chassis power distribution to remote FLEX I/O rack supply, Stratix switch infrastructure, PanelView HMI power, and safety controller segments — making it a single, standardized power solution across multi-zone industrial control panels.

Manufacturing & Assembly Lines: In automotive body shop and general assembly automation, the 1606-XLS120E powers ControlLogix-based motion control panels where 1756-M02AE servo drive interface modules and Kinetix 5700 servo drives share a common 24VDC control bus. The power supply's active PFC and high efficiency reduce panel heat load, extending MTBF in high-cycle-rate production environments.

Power Generation & Utilities: In turbine control and substation automation panels, the 1606-XLS120E provides isolated 24VDC to EtherNet/IP communication gateways and protective relay interface modules. Its wide AC input range accommodates generator-backed UPS output voltage variations, ensuring uninterrupted PLC operation during grid disturbances.

Oil, Gas & Petrochemical: In ATEX Zone 2 classified areas, the 1606-XLS120E (ATEX-certified variant) supplies 24VDC to intrinsically safe barriers and Zener barriers interfacing with field transmitters. Its output OK relay contact integrates with the plant DCS or SIS for power supply health monitoring without requiring additional signal conditioning hardware.

Water & Wastewater Treatment: In pump station and SCADA-integrated water treatment panels, the 1606-XLS120E powers CompactLogix L3x controllers and 1734 Point I/O modules monitoring flow, pressure, and level transmitters. Its DIN rail mounting and compact footprint suit the space-constrained enclosures typical of remote pump station installations.

Mining & Metals: In conveyor control and crusher automation panels operating in high-vibration, high-dust environments, the 1606-XLS120E's sealed construction and wide operating temperature range (-25°C to +70°C) ensure reliable 24VDC supply to ControlLogix systems managing variable-speed drives and belt weighers.

Marine & Offshore: For vessel automation and offshore platform control panels, the 1606-XLS120E's universal AC input and DNV-compatible design support integration into marine-grade control cabinets powering navigation, ballast, and cargo automation systems built on Rockwell Automation platforms.

Q1: Can the 1606-XLS120E be used in parallel with another unit for redundant 24VDC power distribution in a ControlLogix panel?Yes. Two 1606-XLS120E units can be paralleled using external diode ORing modules (e.g., Allen-Bradley 1606-XLSRED series) to achieve N+1 redundancy. Each unit's Output OK relay contact should be wired to a ControlLogix digital input module for real-time power supply health monitoring via the PLC program. This configuration is recommended for critical process control panels where unplanned downtime is unacceptable.

Q2: Is the 1606-XLS120E compatible with FLEX I/O and Point I/O remote racks in an EtherNet/IP architecture, and what wiring practices are recommended?Yes. The 1606-XLS120E is fully compatible with 1794-AENT FLEX I/O adapters and 1734-AENT Point I/O adapters. For remote rack installations, it is recommended to use a dedicated 1606-XLS120E per remote I/O rack rather than distributing 24VDC over long cable runs, which can introduce voltage drop and noise. Use shielded cable for the 24VDC distribution run and connect the shield to the panel earth ground at one end only to prevent ground loops.

Q3: What does the 12-Month Warranty cover for the 1606-XLS120E, and what is the typical lead time for replacement units?The 12-Month Warranty covers manufacturing defects, output voltage regulation failures, output OK relay contact malfunctions, and premature component failure under normal operating conditions. Warranty claims require the unit serial number and a description of the failure mode. NANKMOS maintains stock of the 1606-XLS120E for rapid dispatch; standard lead time for in-stock units is 3–7 business days globally, with expedited shipping available. Contact [email protected] or +86 18359268345 for stock confirmation and warranty support.