Allen-Bradley 1756-L71 ControlLogix Processor 2 MB – Pickup in Store
In stock: 2 units in Milwaukee, WI. Physically stocked and ready to ship or available for local pickup. Includes a 1-year full-function warranty.
2 MB ControlLogix 5570 controller
Actual NJT inventory photos
Price
$1,199.99USDUsed, Series B
| Part Number | 1756-L71 |
| Description | ControlLogix 5570 controller, 2 MB. In stock in used and refurbished condition, Series B. |
| Shipping | Ships same or next business day
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| 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
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| Returns | 90-day free returns. View return policy |
| Exchange | Send us your defective 1756-L71 after your purchase for a 10% core credit. We also purchase old or damaged parts outright. |
Replacement Options for 1756-L71
Pick a condition and series below. UPS Ground shipping included.
| Variants | |||||||||||||||||||||||||||||
| Availability | 2 units in stock | ||||||||||||||||||||||||||||
| Repairs | 1756-L71 Mail-In Repair ServiceEstimated: $1,440.00 | ||||||||||||||||||||||||||||
Part Number Decoder | ControlLogix 5570 controller 1756L71
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. All series use the 1756-ESMCAP energy-storage module and a 1784-SD1 / SD2 card; no battery. Series notes: Studio 5000 keys on catalog number and firmware revision, not series. | ||||||||||||||||||||||||||||
Intended Use | Designed 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)
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 | |||||||||||||||||||||||||||||
Allen Bradley Information | Technical Specifications14 parameters from manufacturer-published specifications
Typical manufacturer-published values for this catalog number; confirm against the current manufacturer documentation before specifying. | ||||||||||||||||||||||||||||
| Category | ControlLogix | ||||||||||||||||||||||||||||
| UPC / GTIN | 612598876013 | ||||||||||||||||||||||||||||
| Part Number | 1756-L71 | ||||||||||||||||||||||||||||
| Manufacturer | Allen-Bradley | ||||||||||||||||||||||||||||
Previously sold 1756-L711 sold
NJT Automation has supplied and shipped one 1756-L71 ControlLogix 5570 controller in 2024; these listings are sold and the in-stock options above are ready to ship.
- Sold
- 1 in 2024
- Series
- B × 1
Can the 1756-L71 be repaired?
Yes. NJT Automation repairs the 1756-L71 by mail-in: diagnostic evaluation, component-level repair and a functional test, backed by a 1-year full-function warranty.
Option 1
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.
Option 2
Independent repair bids. 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.
Common failures
Failure patterns we regularly see on ControlLogix 5570 controller hardware like the 1756-L71:
- SD card corruption preventing the stored project from loading at power-up
- Solid red OK LED (nonrecoverable major fault) that returns after clearing
- Program lost on power cycle: energy storage module (1756-ESMCAP / ESMNSE) failing to hold the controller through a save
- Backplane communication faults from bent chassis pins after repeated module swaps
- Scrolling status display blank or unreadable
Photos by NJT Automation; test videos from NJT or network repair technicians.
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