Allen Bradley 1747-BSN SLC 500 Backup Scanner Module

Product Introduction

The Allen Bradley 1747-BSN Backup Scanner Module is a redundancy-focused communication module designed for SLC 500 control systems using Remote I/O (RIO) networks. Its primary role is to operate as a backup scanner, automatically assuming control of the Remote I/O network if the primary scanner becomes unavailable, thereby maintaining continuous system operation.

This module is engineered for high-availability industrial applications where uninterrupted I/O communication is critical. By supporting seamless switchover, the 1747-BSN minimizes process disruptions and enhances overall system reliability. It integrates directly into SLC 500 chassis architectures and works in conjunction with primary scanner modules to form a robust redundant communication solution.

The 1747-BSN also supports RS-232 and DH+ (Data Highway Plus) interfaces, allowing flexible communication and diagnostics within complex automation systems.

Product Specifications

Applications

• Redundant Remote I/O systems, ensuring continuous I/O communication in critical processes.

• Manufacturing automation, supporting high-availability PLC architectures.

• Process control environments, minimizing downtime caused by communication module failures.

• Industrial control networks, integrating backup scanning capability for Remote I/O racks.

• Legacy SLC 500 systems, enhancing reliability without major system redesign.

Advantages

• Automatic redundancy support, maintaining Remote I/O control during primary scanner failure.

• Deterministic communication, preserving predictable I/O update cycles.

• Seamless SLC 500 integration, designed specifically for existing chassis architectures.

• Support for DH+ and RS-232, enabling flexible communication and diagnostics.

• Industrial-grade reliability, suitable for continuous-duty applications.

• Reduced system downtime, improving overall plant availability.

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