Allen-Bradley 1756-L72 ControlLogix – Ready to Ship / Pick Up
In stock: 1756-L72 4 MB ControlLogix 5570 controller. NJT Automation has 1 unit available in Milwaukee, WI, ready to ship or available for local pickup. Includes a one-year full-function warranty.
$749.99USD
| Part Number | 1756-L72 |
| Description | ControlLogix 5570 controller, 4 MB. In stock in used 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 details
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| Returns | 90-day free returns. View return policy |
| Exchange | Send us your defective 1756-L72 after your purchase for a 10% core credit ($75). We also purchase old or damaged parts outright. |
Replacement Options for 1756-L72
In stock and ready to ship today
| Variants | Part NumberConditionSeriesQtyPrice 1756-L72S /B$749.99 Used · Series B · 1 in stock1756-L72S /BUsedSeries B1$749.99 USD | ||||||||||||||||||||||||||||
| Availability | Similar Match Available A similar unit is in stock and ready to ship once you confirm the condition you need. | ||||||||||||||||||||||||||||
| Repairs | 1756-L72 Mail-In Repair ServiceEstimated: $1,440.00 | ||||||||||||||||||||||||||||
Part Number Decoder | ControlLogix 5570 controller 1756L72 4 MB ControlLogix 5570 controller.
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 | 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)
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 | |||||||||||||||||||||||||||||
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 | ||||||||||||||||||||||||||||
| Part Number | 1756-L72 | ||||||||||||||||||||||||||||
| Manufacturer | Allen-Bradley | ||||||||||||||||||||||||||||
Previously sold 1756-L723 sold
NJT Automation has supplied and shipped 3 1756-L72 ControlLogix 5570 controllers since 2024; these listings are sold and the in-stock options above are ready to ship.
- Sold
- 3 since 2024
- Series
- B × 3
Can the 1756-L72 be repaired?
Yes. NJT Automation repairs the 1756-L72 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.
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 5570 controller hardware like the 1756-L72:
- Solid red OK LED (nonrecoverable major fault) that returns after clearing
- SD card corruption preventing the stored project from loading at power-up
- Front USB port failure: Studio 5000 will not connect over USB
- Scrolling status display blank or unreadable
- Backplane communication faults from bent chassis pins after repeated module swaps
Photos by NJT Automation; test videos from NJT or network repair technicians.
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