Allen-Bradley 1606-XLS480E Replacement for 1606-XLS Series

Product Overview

Allen-Bradley 1606-XLS480E Replacement for 1606-XLS Series: Smooth Transition & Legacy System Compatibility

The Allen-Bradley 1606-XLS480E is a 480W, 24VDC output DIN rail power supply engineered for demanding industrial control environments. As legacy Rockwell Automation control panels age and original 1606-XLS Series units reach end-of-service, facilities engineers and procurement teams face increasing pressure to source verified replacement units that maintain full electrical and mechanical compatibility with existing control cabinet layouts, PLC backplane power budgets, and field wiring configurations.

TOPNLMS stocks the 1606-XLS480E as a direct replacement and upgrade solution for discontinued or aging 1606-XLS Series power supplies. Each unit is sourced from authorized supply chains, individually tested prior to shipment, and backed by a 12-month warranty. Whether you are executing a planned preventive maintenance swap, responding to an unplanned failure, or modernizing a legacy Allen-Bradley SLC 500, MicroLogix 1500, or ControlLogix L6x-era control panel, the 1606-XLS480E integrates without requiring panel rewiring or PLC program modification.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful 1606-XLS480E retrofit rarely involves the power supply alone. In most Allen-Bradley control panel modernization projects, the power supply replacement is coordinated with adjacent components to ensure system-wide reliability and minimize total downtime.

For panels running ControlLogix or CompactLogix architectures, the 1606-XLS480E typically powers the 1756-PA75 or 1756-PB75 chassis power supply alongside field I/O. When the main 24VDC bus is being refreshed, engineers commonly audit the 1756-IB16 and 1756-OB16E digital I/O modules for contact wear, replacing aging units at the same maintenance window. In SLC 500 legacy environments, the 1606-XLS480E feeds the 1746-P4 power supply module and associated 1746-IB16 input cards — all of which TOPNLMS stocks as companion replacement parts.

Communication continuity is equally critical during a power supply swap. Panels using DeviceNet or EtherNet/IP architectures rely on the 1756-ENBT or 1756-EN2T communication modules remaining powered and online throughout the transition. Where redundant power is required, the existing 1606-XLSRED redundancy module can be retained and reconnected to the new 1606-XLS480E without firmware changes. For panels incorporating Flex I/O remote racks, the 1794-AENT adapter module’s 24VDC supply rail must be verified against the new unit’s output tolerance — the 1606-XLS480E’s adjustable output (24–28 VDC) accommodates this without additional regulators.

In drive-integrated control cabinets, the 1606-XLS480E commonly coexists with PowerFlex 525 or PowerFlex 755 variable frequency drives sharing the same DIN rail section. During installation, engineers should verify that inrush current from the drive’s 24VDC logic supply does not exceed the power supply’s peak current rating — the 1606-XLS480E’s 125% peak current capability handles standard PowerFlex logic supply demands without derating. Where signal isolation is required between the PLC output module and field devices, 24VDC-powered signal isolators mounted on the same DIN rail section draw from the same 1606-XLS480E bus and should be included in the total load calculation.

For HMI-integrated panels, PanelView Plus 7 terminals powered from the same 24VDC rail should be load-calculated alongside the PLC chassis and I/O to confirm the 480W budget is not exceeded. TOPNLMS can supply the 1606-XLS480E alongside companion components to support a complete panel refresh in a single procurement order.

Retrofit Guidance FAQ

Q: Can I re-use existing field wiring when replacing the 1606-XLS480E?
A: Yes. The terminal block layout and pitch on the 1606-XLS480E (revision E) is identical to prior revisions (B, D). Existing wire ferrules and terminations can be transferred directly. Label each wire before removal and re-terminate in the same sequence. No re-crimping is required if wire ends are in good condition.

Q: Do I need to modify my ControlLogix or SLC 500 program after replacing the power supply?
A: No. The 1606-XLS480E is a passive DC power source. It does not communicate with the PLC over any fieldbus protocol. The DC OK relay output wiring to the PLC digital input (used for power-fail alarming) is re-terminated identically. No program changes, I/O mapping updates, or firmware downloads are required.

Q: Is the 1606-XLS480E compatible with EtherNet/IP and DeviceNet communication architectures?
A: The power supply itself is protocol-agnostic — it provides 24VDC to the control system. EtherNet/IP modules (1756-EN2T, 1756-ENBT) and DeviceNet scanner modules (1756-DNB) continue to operate on the same 24VDC bus without any configuration changes after the power supply is replaced.

Q: What is the physical installation space requirement?
A: The 1606-XLS480E occupies 82 mm of DIN rail width. If replacing a same-series unit, no panel rework is required. If replacing a different-brand power supply, verify DIN rail section length and adjacent component clearance. Minimum 50 mm vertical clearance above and below the unit is recommended for convection cooling.

Q: Can the 1606-XLS480E operate in parallel with a redundancy module?
A: Yes. The existing 1606-XLSRED redundancy module is fully compatible with the 1606-XLS480E. Connect the redundancy module’s output terminals to the new unit following the original wiring diagram. No redundancy module replacement or reconfiguration is required.

Q: What commissioning checks should be performed after installation?
A: After installation, verify output voltage at the terminal block (nominal 24 VDC, adjustable to 28 VDC if required), confirm DC OK relay output is energized and the corresponding PLC input bit is set, check all downstream I/O module status LEDs, and perform a controlled PLC restart to confirm normal program execution. Log the commissioning date for warranty tracking.

Warranty Assurance

Every 1606-XLS480E shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to shipment, each unit undergoes output voltage verification, load regulation testing, and DC OK relay function confirmation. Units that do not meet specification are quarantined and not shipped.

In the event of a warranty claim, TOPNLMS provides a replacement unit or full refund within the warranty period. Our after-sales response target is 24 hours for initial acknowledgment and 72 hours for resolution proposal. Warranty coverage includes manufacturing defects, premature component failure under normal operating conditions, and DOA (dead-on-arrival) units confirmed within 7 days of receipt.

Procurement documentation including test records, packing lists, and certificates of conformance is available upon request for quality-system compliance. TOPNLMS supports net-term purchasing for qualified industrial accounts and can provide consolidated invoicing for multi-line panel refresh orders.

For urgent replacement requirements, same-day dispatch is available for in-stock units ordered before 14:00 CST. International shipments are routed via DHL Express or FedEx International Priority with full tracking and commercial invoice documentation for customs clearance.