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Allen Bradley 1756-L72SK GuardLogix Safety Controller - 4MB

Allen Bradley 1756-L72SK GuardLogix Safety Controller

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ManufacturerAllen Bradley

Part number1756-L72SK

Part Number 1756-L72SK

Manufacturer Allen Bradley

Series ControlLogix 5570 GuardLogix

Type Safety Controller

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Integrated safety and standard control SIL 3 / PLe certified 4MB user memory, 1.5MB safety memory Redundancy capable Supports EtherNet/IP, ControlNet, DeviceNet (via modules)

Product description

The Allen-Bradley 1756-L72SK is a ControlLogix 5570 GuardLogix safety controller, designed to provide both standard and safety control within a single platform. It features 4MB of user memory and 1.5MB of safety memory, with certifications for SIL 3/PLe, making it suitable for applications requiring high integrity and integrated safety.

This controller is ideal for mission-critical applications in industries such as chemical processing, oil and gas, and heavy manufacturing where safety and reliability are paramount. Its compatibility with the ControlLogix chassis and redundancy capabilities enhance system availability.

Stanlo Automation, your veteran-owned source for surplus industrial automation parts, offers the Allen-Bradley 1756-L72SK. We provide quality components and efficient service to keep your critical systems operational.

Technical specifications

Part Number	1756-L72SK
Manufacturer	Allen Bradley
Series	ControlLogix 5570 GuardLogix
Type	Safety Controller
User Memory	4MB
Safety Memory	1.5MB
Safety Rating	SIL 3 / PLe
Backplane Current	1.2A @ 5.1V DC
Certifications	UL, CE, CSA, TÜV, RoHS

Common applications

Safety-critical processes

High-integrity manufacturing

Oil & gas safety

Chemical processing

Redundant safety systems

Compatible systems

1756 ControlLogix Chassis Studio 5000 Logix Designer Software

Also known as

1756L72SK, Allen Bradley GuardLogix 5570, ControlLogix Safety Controller

Replaces / compatible with

The 1756-L72SK is part of the Allen Bradley ControlLogix 5570 GuardLogix family. For specific upgrade paths or replacements, consult Rockwell Automation's compatibility matrices.

Technical note

Expert tip

When configuring redundancy, ensure that the primary and secondary controllers have identical firmware versions and configurations for seamless failover.

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Frequently asked questions

What safety certifications does the Allen Bradley 1756-L72SK controller hold?

The Allen Bradley 1756-L72SK GuardLogix safety controller is certified for SIL 3 (Safety Integrity Level 3) and PLe (Performance Level e) according to relevant industry standards, making it suitable for high-risk safety applications.