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Allen Bradley 1756-L72S GuardLogix 5570 PAC Controller

Allen Bradley 1756-L72S GuardLogix 5570 PAC Controller.

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ManufacturerAllen Bradley

Part number1756-L72S

User Memory 4MB

Safety Memory 2MB

I/O Memory 0.98MB

Max Digital I/O 128,000

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12-month warranty

All units tested

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Same-day dispatch

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Worldwide delivery

US, EU, Asia, Middle East

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Veteran-owned

CAGE: 9NK75

Integrated safety and standard control SIL 3 certified High memory capacity Supports EtherNet/IP, ControlNet, DeviceNet Embedded USB port Modular design for ControlLogix chassis

Product description

The Allen-Bradley 1756-L72S is a GuardLogix 5570 PAC (Programmable Automation Controller) that combines standard and safety control in a single platform. It offers 4MB of user memory, 2MB of safety memory, and 0.98MB of I/O memory, supporting up to 128,000 digital I/O and 4000 analog I/O. This controller is SIL 3 certified and features an embedded USB communication port for local configuration.

GuardLogix controllers are ideal for applications requiring integrated safety and automation, such as machine control, process safety, and high-integrity systems in industries like automotive, chemical processing, and pharmaceuticals.

Stanlo Automation, your veteran-owned surplus parts distributor, provides the Allen-Bradley 1756-L72S. We ensure you receive reliable, tested surplus components to maintain your critical automation systems.

Technical specifications

User Memory	4MB
Safety Memory	2MB
I/O Memory	0.98MB
Max Digital I/O	128,000
Max Analog I/O	4000
Power Dissipation	2.5W
Isolation Voltage	30V DC
Communication	EtherNet/IP, ControlNet, DeviceNet
SIL Rating	SIL 3

Common applications

Machine Safety

Process Safety

Integrated Automation

High-Integrity Systems

Automotive Manufacturing

Chemical Processing

Pharmaceuticals

Compatible systems

ControlLogix 1756 Chassis, EtherNet/IP, ControlNet, DeviceNet

Also known as

ControlLogix 5570 GuardLogix 5572S Allen Bradley L72S

Replaces / compatible with

The 1756-L72S is part of the ControlLogix and GuardLogix family of controllers, designed for integrated safety and automation.

Technical note

Expert tip

This controller can be installed in any slot of a ControlLogix 1756 chassis, and multiple controllers can reside in the same chassis.

What happens next?

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Frequently asked questions

What is the memory capacity of the Allen Bradley 1756-L72S GuardLogix controller?

The Allen Bradley 1756-L72S GuardLogix controller has 4MB of user memory, 2MB of safety memory, and 0.98MB of I/O memory. It also includes 1GB of non-volatile memory via a shipped SD card.