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A-B 1752-L24BBB SmartGuard 600 Safety Controller

Product Overview

The Allen-Bradley 1752-L24BBB is a SmartGuard 600 programmable safety controller designed for machine safety and industrial automation. It monitors safety devices and controls safety-related outputs, supporting applications requiring high-integrity safety functions. The controller communicates over DeviceNet and provides USB connectivity for programming.

Key Technical Specifications

Specification	Details
Brand	Allen-Bradley (A-B)
Model	1752-L24BBB
Product Series	SmartGuard 600
Product Type	Programmable Safety Controller
Safety Inputs	16 digital inputs
Safety Outputs	8 digital outputs
Pulse Test Outputs	4
Supply Voltage	24 V DC (20.4–26.4 V DC)
Communication Protocol	DeviceNet / DeviceNet Safety
Programming Port	USB
Safety Rating	SIL 3; PLe / Category 4, subject to system requirements
Operating Temperature	-10°C to +55°C
Dimensions (H × W × D)	Approx. 99 × 90.4 × 131.4 mm
Weight	Approx. 470 g
Lifecycle Status	Discontinued December 31, 2023 PRD Storage +1

Features & Advantages

Provides integrated safety logic for industrial machinery.
Supports 16 safety input channels and 8 safety output channels.
Includes four pulse-test sources for safety-device diagnostics.
Communicates with compatible DeviceNet safety networks.
USB connectivity simplifies programming and maintenance.
Can exchange safety-related status information with compatible automation systems.

Typical Applications

Emergency-stop circuits
Safety gate and guard monitoring
Light curtain applications
Industrial machinery safety systems
Conveyor and material-handling equipment
Distributed safety control installations

Important Notes

The 1752-L24BBB uses DeviceNet; it does not have the built-in EtherNet/IP interface found on the 1752-L24BBBE variant.
A 24 V DC power supply and compatible safety devices are required.
Safety performance depends on the complete system design, configuration, wiring, and validation.
This controller is discontinued. Verify the unit's condition, firmware, and compatibility before ordering.