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1756-L71 Allen-Bradley

Name: 1756-L71 Allen-Bradley
Brand: Allen Bradley
SKU: 1756-L71
Price: 1749.98 USD
Availability: InStock

$1,749.98 - $2,398.48

$1,749.98

$1,749.98 - $2,398.48

$1,749.98

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Product Details

Description · Specifications · Product Overview

Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.

Product Overview

The 1756-L71 is an Allen-Bradley ControlLogix 5570 series programmable automation controller (PAC). It features 2 MB user memory and approximately 0.98 MB I/O memory and uses a Secure Digital (SD) card (1 GB) for non-volatile storage. The module manages up to 128 000 I/O points and supports up to 32 controller tasks. It connects via a built-in USB programming port and interfaces with networks such as EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, and SynchLink. Typical applications include mid-to-large industrial control systems, process automation, and complex machine control where scalable I/O and task handling are required. 1756-L71 integrates energy storage modules for program retention.

Best Suited For

ControlLogix chassis-based systems
Systems requiring large I/O count (up to 128 000 points)
Applications with multiple controller tasks (up to 32 tasks)
Environments needing removable non-volatile storage via SD card

User memory

2 MB

I/O memory

0.98 MB

Non-volatile storage

1 GB (SD card)

Built-in port

1 USB (programming)

Max I/O points

128 000

Technical Specifications

I/O & Electrical

I/O memory

0.98 MB

Max digital I/O

128 000

Max analog I/O

4 000

Isolation voltage

30 V (continuous)

Communication & Power

User memory

2 MB

Non-volatile memory

1 GB (SD card)

Controller tasks

32

Communication options

EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, SynchLink, third-party networks

Power consumption @ 1.2 V DC

5 mA

Power consumption @ 5.1 V DC

800 mA

Power dissipation

2.5 W

Thermal dissipation

8.5 BTU/hr

Physical & Environmental

Enclosure

None (open-style)

Operating temperature

0 °C to 60 °C

Certifications

UL ListedCEATEXIECExAustralian RCMKorean KCABSEurAsian Econ. Comm.Morocco DOC

Certified: UL Listed, CE, ATEX, IECEx, Australian RCM, Korea KC, American Bureau of Shipping, Eurasian Economic Community, Morocco DOC (as of May 17 2026) per Rockwell Automation documentation.

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Rockwell Automation documentation

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Must Read: Disclaimer

PLC Department sells surplus and refurbished industrial automation products, including but not limited to programmable logic controllers (PLCs), which are sourced exclusively through independent third-party channels. PLC Department is not an authorized distributor, reseller, or representative of any manufacturer listed on this website, including Rockwell Automation or its Allen-Bradley brand. All product warranties, where offered, are provided solely by PLC Department and not by the original manufacturer.

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