Allen-Bradley 1756-L81E ControlLogix – Ready to Ship / Pick Up
In stock: The 1756-L81E is a 3 MB ControlLogix 5580 controller, embedded 1 Gb EtherNet/IP port. NJT Automation has 6 units available in Milwaukee, WI, ready to ship or available for local pickup. Includes a one-year full-function warranty.

$2,499.99 – $3,499.99USD
| Description | ControlLogix 5580 controller, 3 MB. In stock in refurbished and unused surplus condition, Series B. |
| Shipping | Ships today UPS Ground included | Next-Day Air and Worldwide Shipping available at checkout |
| Pickup | Free local pickup at 2122 N Prospect Ave. Call ahead at (414) 331-5954. |
| Warranty | 1-year full-function warranty provided by NJT Automation.Warranty detailsThe original Allen-Bradley warranty does not apply to pre-owned units. Full warranty coverage is provided directly by NJT Automation. If you have any issues we can usually swap your unit next-day air (based on inventory)-no waiting weeks for a repair. Included: 1 Year +1 Year: +15% of product price (from $375.00) +2 Years: +25% of product price (from $625.00) |
| Returns | 90-day free returns on all purchases.View return policy |
| Exchange | Send us your defective 1756-L81E after your purchase for a 10% core credit. We also purchase old or damaged parts outright. |
Replacement Options for 1756-L81E
In stock and ready to ship today
| Availability | Multiple Options Available |
| Variants | |
| Repairs | 1756-L81E Mail-In Repair ServiceEstimated: $1,440.00 |
Part Number Decoder | ControlLogix 5580 controller 1756L81E 3 MB ControlLogix 5580 controller, embedded 1 Gb EtherNet/IP port.
Decoded from the Rockwell Automation catalog-number structure. Series and firmware revision are printed on the product label, not encoded here. |
Similar Part Numbers | |
Allen Bradley Information | Technical Description Allen Bradley (Rockwell Automation) 1756 E03 - 1756-L81E Lifecycle: Active — verify current status with the manufacturer |
Alternate Part Numbers | 1756L81E |
| Category | ControlLogix |
| UPC / GTIN | 887172361326 |
| Part Number | 1756-L81E |
| Manufacturer | Allen-Bradley |
Can the 1756-L81E be repaired?
Yes. NJT Automation offers mail-in repair for the 1756-L81E, including diagnostic evaluation, component-level repair, and functional testing.
One vendor. One warranty. NJT manages the entire process.
- 1-year full-function NJT warranty, with 2- and 3-year options available
- Rush service available for production-critical repairs
- No evaluation or diagnostic charges
- No repair, no charge
- Pre-paid UPS shipping label provided for sending your unit in
- $650 minimum repair charge, shipping included both ways
Looking for another option? For lower-cost repairs or if you prefer to work directly with an independent repair specialist, compare bids through RepairMode. RepairMode providers operate independently and set their own pricing and warranty terms.
See completed 1756-L81E repairson RepairMode.com ↗Common 1756-L81E failures
Failure patterns we regularly see on ControlLogix 5580 controller hardware like the 1756-L81E:
- 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
- Four-character status display stuck, blank or showing scrolling fault text
- Overheating in a full chassis, especially with no spacing in sealed enclosures
- Repeated major faults after a firmware flash that did not complete
Documented failure modes
Commonly reported issues for the Allen-Bradley 1756-L81E include Energy storage fault, based on recent completed repairs. These are compiled from customer issue descriptions and technician repair notes. A technician confirms the actual root cause of each unit during evaluation.
Why Choose Our Repair Service?
- ■ Rush turnaround available, with 24-hour emergency service on some models
- ■ 1-year full-function warranty, with 2- and 3-year extended options
- ■ No evaluation or diagnostic charges
- ■ Free UPS shipping label available
- ■ "Unrepairable" is not an option
- ■ Thousands of successful Allen-Bradley restorations
Request a Repair Quote
Ready to repair your 1756-L81E? Request a repair quote below. For immediate assistance, text photos of your faulty unit and a description of the symptoms to (414) 331-5954.
Still have questions?
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