Excellent PLC
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
| Parameter | Description |
|---|---|
| Product Type | Backup Scanner Module |
| System Series | Allen-Bradley SLC 500 |
| Primary Function | Backup control of Remote I/O network |
| Communication Protocol | Remote I/O (RIO) |
| Network Redundancy Role | Automatic backup scanner |
| Supported Interfaces | RS-232, DH+ (Data Highway Plus) |
| Data Handling | Cyclic and deterministic I/O data exchange |
| Power Supply Voltage | 5 VDC |
| Current Consumption | 800 mA |
| Chassis Installation | SLC 500 rack-mounted module |
| Diagnostics Capability | Network status and fault indication |
| Dimensions | 144.5 × 34.6 × 130.18 mm |
| Weight | 0.45 kg |
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.
