Allen-Bradley 1756-L82E ControlLogix Processor 5 MB

Name: Allen-Bradley 1756-L82E ControlLogix Processor
Brand: Allen-Bradley
SKU: 1756-L82E
Price: 2899.99 USD
Availability: InStock

In stock: 8 units in Milwaukee, WI. Physically stocked and ready to ship or available for local pickup. Includes a 1-year full-function warranty.

5 MB ControlLogix 5580 controller · embedded 1 Gb EtherNet/IP port

Allen-Bradley 1756-L82E ControlLogix 5580 controller, 5 MB – Series B (1 of 7)

Actual NJT inventory photos

Starting at

$2,899.99USD

Unused surplus units available

Request Repair QuoteEstimated $1,440.00

Part Number	1756-L82E
Description	ControlLogix 5580 controller, 5 MB. In stock in unused surplus condition, Series B.
Shipping	Ships same or next business day 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 details Included 1 year, full-function 2 years +15% of product price (from $435.00) 3 years +25% of product price (from $725.00) View full warranty policy
Returns	90-day free returns. View return policy
Exchange	Send us your defective 1756-L82E after your purchase for a 10% core credit (from $290). We also purchase old or damaged parts outright.

Replacement Options for 1756-L82E

Pick a condition and series below. UPS Ground shipping included.

Allen-Bradley 1756-L82E ControlLogix Processor – Series B, New surplus (sealed)

Allen-Bradley 1756-L82E ControlLogix Processor – Series B, New surplus (sealed), second photo

Allen Bradley 1756-L82E /B ControlLogix Controller - Sealed Surplus

$2,899.99 USDIn-stock match

Condition: New surplus (sealed)

Series B

4 in stockView details

2025 Allen Bradley 1756-L82E Ser B ControlLogix 5580 CPU Controller

$2,999.99 USDIn-stock match

Condition: New surplus (sealed)

Series B

4 in stockView details

Variants

Part NumberConditionSeriesQtyPrice

1756-L82E /B$2,899.99

New surplus (sealed) · Series B · 4 in stock

1756-L82E /BNew surplus (sealed)Series B4$2,899.99 USD

1756-L82E /B$2,999.99

New surplus (sealed) · Series B · 4 in stock

1756-L82E /BNew surplus (sealed)Series B4$2,999.99 USD

1756-L82E

Refurbished — pick series, then request a quote

Series neededRequest Quote

1756-L82ERefurbishedSeries needed—Request Quote

Availability

8 units in stock

Repairs

1756-L82E Mail-In Repair Service

Estimated: $1,440.00

Part Number Decoder

ControlLogix 5580 controller

1756L82E

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).
2: Memory size5 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

Series B in stock; other series on request.

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)

Weight	0.39 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 Weight	0.92 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.

Similar Part Numbers

1756-L81E Memory size: 3 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
1756-L85E Memory size: 40 MB of standard user memory

Allen Bradley Information

Technical Specifications15 parameters from manufacturer-published specifications

Lifecycle	Active Verify current status with the manufacturer.
Controller family	ControlLogix 5580
User memory	5 MB
EtherNet/IP nodes supported	175 (Logix Designer v30 or later)
Tasks / programs	32 tasks; 1,000 programs per task
Embedded communication	1 × EtherNet/IP port, 10/100/1000 Mbps; 1 × USB 2.0
Digital I/O, max	128,000
Analog I/O, max	4,000
Memory card	1784-SD4 (4 GB SD, included)
Energy storage	Embedded energy storage module (no battery)
Motion	Integrated Motion on EtherNet/IP
Redundancy	Supported (Logix Designer v33 or later)
Programming languages	Relay ladder, structured text, function block, sequential function chart
Backplane current	1.20 A @ 5.1V DC
Power dissipation	6.2 W
Chassis slots	1

Typical manufacturer-published values for this catalog number; confirm against the current manufacturer documentation before specifying.

Can the 1756-L82E be repaired?

Yes. NJT Automation repairs the 1756-L82E 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.

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Common failures

Failure patterns we regularly see on ControlLogix 5580 controller hardware like the 1756-L82E:

Controller will not boot or shows a solid red OK LED (nonrecoverable major fault) after a power event
Repeated major faults after a firmware flash that did not complete
Overheating in a full chassis, especially with no spacing in sealed enclosures
Four-character status display stuck, blank or showing scrolling fault text
Front USB and 1-Gb Ethernet port failures from ESD or a damaged connector

Related services:PLC Repair All Repair Services

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

Still have questions?

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

Frequently Asked Questions

What is the 1756-L82E?

The Allen-Bradley 1756-L82E is a 5 MB ControlLogix 5580 controller, embedded 1 Gb EtherNet/IP port.

What condition is it in?

NJT Automation currently has 8 units of the 1756-L82E in stock in unused surplus condition (Series B). Each listing states its own condition and series. Factory-sealed, unused surplus stock in original packaging. May carry an older date code or series than current OEM production.

How much does it cost?

At NJT Automation, 5 1756-L82E ControlLogix 5580 controllers have sold since 2024 for $2,300 – $4,000, with a median of $3,100. Right now 8 units are in stock at $2,900 to $3,000, depending on condition and series.

When does this part ship?

8 units of the 1756-L82E ControlLogix 5580 controller are on the shelf in Milwaukee, WI, priced from $2,899.99 to $2,999.99. Orders before 5:00 PM Central on a business day ship the same day; next-day air is available at checkout.

How much memory does it have?

5 MB of standard user memory.