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Allen-Bradley 1756-L85E ControlLogix – Repair Service Available

Allen-Bradley 1756-L85E 40 MB ControlLogix 5580 controller, embedded 1 Gb EtherNet/IP port. NJT Automation offers mail-in repair for the 1756-L85E with a 1-year warranty; replacement pricing is available on request.

Mail-in repair available now. Returned with a 1-year warranty. Replacement pricing on request.

Request Replacement QuoteRequest Repair QuoteEstimated $1,500.00
Part Number1756-L85E
Price
On Request
Previously sold for $2,899.99 - $4,399.99 USDAvailability and condition determine final quote.
DescriptionControlLogix 5580 controller, 40 MB.
Shipping
UPS Ground included | Next-Day Air and Worldwide Shipping available at checkout
Warranty
1-year full-function warranty provided by NJT Automation.
Warranty details
Included
1 year, full-function
2 years
+15% of product price ($450.00)
3 years
+25% of product price ($750.00)
View full warranty policy
Returns
90-day free returns. View return policy
Exchange

Send us your defective 1756-L85E after your purchase for a 10% core credit. We also purchase old or damaged parts outright.

Availability
Sourced on request

We do not have a 1756-L85E on the shelf right now. We can source one through our supplier network; request a quote and we confirm availability, price and lead time before you commit.

Sourcing

Sourced through our Level 1 network of vetted US suppliers. Each unit is checked before it ships and carries the same NJT warranty and return policy as our own stock. Quotes within one hour during business hours; typical delivery 3–5 business days, next-day air available. Sourced parts are not available for local pickup.

Request QuoteHow Level 1 sourcing works
Repairs

1756-L85E Mail-In Repair Service

Estimated: $1,500.00

Part Number Decoder

ControlLogix 5580 controller
1756L85E

40 MB ControlLogix 5580 controller, embedded 1 Gb EtherNet/IP port.

1756
BulletinControlLogix: Rockwell Automation's chassis-based control platform (controllers, I/O, communication modules, power supplies and chassis).
L
Module typeLogix controller (CPU module).
8
GenerationControlLogix 5580: Logix5580 series (embedded 1 Gb EtherNet/IP port, 5–20x the performance of 5570).
5
Memory size40 MB of standard user memory.
E
Embedded portEmbedded EtherNet/IP port (1 Gb) on the controller front, so no separate bridge module is required for the first network.
Decoded from the Rockwell Automation catalog-number structure. Series and firmware revision are printed on the product label, not encoded here.

Series & Revisions

No series in stock today; request a series above.

Series B controllers run firmware revision 31.011 or later; Series A units also run the earlier 5580 revisions (28 to 30).

Every series needs a Series B or Series C 1756 chassis (Series B derated to 50 °C ambient); 5580 controllers do not work in a Series A chassis.

Series notes: Studio 5000 keys on catalog number and firmware revision, not series. Fitting a Series B into a project on revision 28 to 30 means upgrading the project to 31 or later first.

Intended Use

Built for plant-wide discrete, process, and motion control applications. ControlLogix controllers run high I/O-count machines, batch and continuous process lines, and coordinated multi-axis motion from a single chassis, with redundancy and plant-network connectivity when the application calls for it. Typical homes are automotive and tire plants, food and beverage lines, water and wastewater, oil and gas skids, and large packaging systems.

Physical Data

Weight and DimensionsWeight0.87 lb (0.39 kg)H × W × D5.7 × 1.4 × 5.7 in. (145 × 35 × 145 mm)
Weight0.39 kg (0.87 lb)
Typical unit weight
Dimensions (H × W × D)145 × 35 × 145 mm (5.7 × 1.4 × 5.7 in.)
Single-slot controller module
Shipping Weight0.92 kg (2.03 lb)
Estimated: unit weight plus box and packing material; bills as 3 lb
Shipping Box (L × W × H)12 × 12 × 8 in. (305 × 305 × 203 mm)
Smallest standard box fitting the product with 3 in. cushioning per side
Product weight and dimensions are typical manufacturer-published values and may differ by series or option. Shipping box and weight are estimates for freight planning; the packed unit may ship in a different box.

Datasheet

Datasheet available for download
Generated from product specifications; not an official Allen-Bradley datasheet. For an official datasheet, contact Allen-Bradley or an authorized distributor.

Similar Part Numbers

  • 1756-L81E Memory size: 3 MB of standard user memory
  • 1756-L82E Memory size: 5 MB of standard user memory
  • 1756-L83E Memory size: 10 MB of standard user memory
  • 1756-L84E Memory size: 20 MB of standard user memory

Allen Bradley Information

Technical Specifications15 parameters from manufacturer-published specifications
LifecycleActive
Verify current status with the manufacturer.
Controller familyControlLogix 5580
User memory40 MB
EtherNet/IP nodes supported300 (Logix Designer v30 or later)
Tasks / programs32 tasks; 1,000 programs per task
Embedded communication1 × EtherNet/IP port, 10/100/1000 Mbps; 1 × USB 2.0
Digital I/O, max128,000
Analog I/O, max4,000
Memory card1784-SD4 (4 GB SD, included)
Energy storageEmbedded energy storage module (no battery)
MotionIntegrated Motion on EtherNet/IP
RedundancySupported (Logix Designer v33 or later)
Programming languagesRelay ladder, structured text, function block, sequential function chart
Backplane current1.20 A @ 5.1V DC
Power dissipation6.2 W
Chassis slots1
Typical manufacturer-published values for this catalog number; confirm against the current manufacturer documentation before specifying.
CategoryControlLogix
Part Number1756-L85E
ManufacturerAllen-Bradley

Previously sold 1756-L85E

3 sold

NJT Automation has supplied and shipped 3 1756-L85E ControlLogix 5580 controllers in 2024; request a quote and we will source another from our supplier network.

Sold
3 in 2024
Series
B × 3
Allen-Bradley 1756-L85E Unused surplus (new old stock) - previously sold by NJT AutomationSold

Allen Bradley 1756-L85E Ser B ControlLogix 5580 Controller - Open Box

$4,399.99 USD

Unused surplus (new old stock)

Request Quote

Can the 1756-L85E be repaired?

Yes. NJT Automation repairs the 1756-L85E by mail-in: diagnostic evaluation, component-level repair and a functional test, backed by a 1-year full-function warranty.

NJT managed repair. No evaluation fee; no repair, no charge. Prepaid UPS label both ways, $650 minimum, rush available. 1-year full-function warranty included, 2- and 3-year options.

Get a repair quoteor text photos and symptoms to (414) 331-5954

Compare quotes from independent repair technicians. Post your repair on RepairMode to receive competitive bids from experienced technicians. Each technician sets their own pricing and warranty.

Find a PLC repair specialiston RepairMode.com ↗

Common failures

Failure patterns we regularly see on ControlLogix 5580 controller hardware like the 1756-L85E:

  • Overheating in a full chassis, especially with no spacing in sealed enclosures
  • Repeated major faults after a firmware flash that did not complete
  • Controller will not boot or shows a solid red OK LED (nonrecoverable major fault) after a power event
  • SD card corruption: controller reports a load failure or comes up with no project
  • Front USB and 1-Gb Ethernet port failures from ESD or a damaged connector

Photos by NJT Automation; test videos from NJT or network repair technicians.

Still have questions?

Find answers to shipping, warranties, repairs, and more.

The Allen-Bradley 1756-L85E is a 40 MB ControlLogix 5580 controller, embedded 1 Gb EtherNet/IP port.
The 1756-L85E is available in Unused surplus / Refurbished / Used condition. We can quote this part in unused surplus, refurbished, or used condition depending on availability and your preference. Specify your requirement in the RFQ.
At NJT Automation, 3 1756-L85E ControlLogix 5580 controllers have sold in 2024 for $2,900 – $4,400. None are in stock at the moment; request a quote for current pricing, or have your ControlLogix 5580 controller repaired for an estimated $1,500.
The 1756-L85E is sourced on request. Request a quote and we'll confirm availability and lead time, typically a few business days.
40 MB of standard user memory.
Disclaimer

Trademarks & Compatibility

All trademarks, service marks, trade names, brand names, and logos displayed on this website are the property of their respective owners. Any references to manufacturers, products, or brands are for identification and compatibility purposes only and do not imply any affiliation with, endorsement by, sponsorship from, or authorization by the respective trademark owners.

Independent Supplier

NJT Automation is an independent supplier of surplus, refurbished, and pre-owned industrial automation equipment. Unless expressly stated otherwise, NJT Automation is not an authorized distributor, dealer, representative, or affiliate of the original equipment manufacturer (OEM) for any products offered on this website.

Product Condition & Warranty

Products sold by NJT Automation may be surplus inventory, discontinued models, older series, or units with earlier manufacturing date codes than those currently available from the OEM or its authorized distribution network. As NJT Automation is not an authorized distributor, manufacturer warranties, support programs, and other OEM services may not apply. Any warranty provided is solely that of NJT Automation, where applicable.

Firmware & Software Licensing

Certain programmable logic controllers (PLCs), drives, HMIs, and other electronic products may require firmware to operate. While some products may include firmware, NJT Automation makes no representations or warranties regarding whether firmware is installed, the firmware version or revision level, its compatibility with your application, or its licensing status.

NJT Automation does not provide, obtain, transfer, or license firmware on behalf of customers. We make no representation regarding your ability or legal right to obtain, download, install, or use firmware from the OEM, its authorized distributors, or any other source. It is the customer's sole responsibility to ensure compliance with all applicable End User License Agreements (EULAs), software licenses, intellectual property rights, and other terms governing the acquisition, installation, and use of firmware.