Allen-Bradley 1756-L73XT Controller Module

Series#: AllenBradley

Product Details

1756-L73XT – High-performance GuardLogix safety controller for integrated process and motion control.
Built-in safety functions up to SIL 3 / PLe, Category 4 per IEC 61508 and ISO 13849.
Supports dual-slot chassis mounting with redundant power and network options.
Integrated 2 MB user memory and 2 MB safety memory for complex applications.
Native support for EtherNet/IP, ControlNet, and DeviceNet via removable communication modules.
Extended temperature range (-25°C to +70°C) and conformal coating for harsh environments.
Guaranteed 100% Original factory condition, offering fast and secure worldwide delivery.

Specification

The 1756-L73XT is a flagship GuardLogix controller from the Allen-Bradley ControlLogix family, designed for mission-critical safety applications requiring high availability and deterministic performance. This controller combines standard control logic with integrated safety functions, enabling seamless coordination of process, motion, and safety tasks in a single chassis. Its rugged XT (eXtreme Temperature) variant ensures reliable operation in demanding industrial environments, from oil and gas platforms to steel mills. The 1756-L73XT supports up to 128 safety I/O modules and offers redundant communication paths, making it ideal for SIL 3 safety loops and high-speed motion control. Below are the detailed technical specifications derived from standard ControlLogix documentation.

Parameter	Specification for 1756-L73XT
Controller Type	GuardLogix Safety Controller (XT)
User Memory (Standard)	2 MB (non-volatile)
User Memory (Safety)	2 MB (non-volatile, with safety signature)
Maximum I/O Points	128,000 digital / 4,000 analog (system limit)
Safety Integrity Level	SIL 3 per IEC 61508; PLe / Category 4 per ISO 13849
Communication Protocol	EtherNet/IP, ControlNet, DeviceNet (via removable modules)
Redundancy Support	Yes, with 1757-SRM module for redundant media
Operating Temperature	-25°C to +70°C (XT range)
Storage Temperature	-40°C to +85°C
Relative Humidity	5% to 95% non-condensing
Power Supply Voltage	24V DC (nominal), 19.2V to 31.2V range
Power Consumption	8.5W typical, 12W maximum
Chassis Slot Requirement	Single slot (ControlLogix chassis)
Safety Task Execution	Dual-task architecture: Standard + Safety tasks
Motion Control	Integrated motion via SERCOS or EtherNet/IP (up to 16 axes)
Certifications	cULus, CE, ATEX, IECEx, TÜV Rheinland (functional safety)
Dimensions (H x W x D)	5.25 x 1.75 x 5.13 inches (133.4 x 44.5 x 130.3 mm)
Weight	1.2 lbs (0.54 kg)