Allen-Bradley 1747-BSN | SLC 500 Backup Scanner Module

Overview

The 1747-BSN is a backup scanner module for Allen-Bradley’s SLC 500 platform. It ensures redundancy for remote I/O systems and provides reliable failover operation.

This module supports SLC 5/02, 5/03, 5/04, and 5/05 processors. It manages communication through DH+/RIO and RS-232/485 channels, enabling seamless integration with operator interfaces and other industrial devices.

Equipped with a High-Speed Serial Link (HSSL), the 1747-BSN transfers retentive data from the primary to the secondary processor. Additionally, the Local Serial Link (LSL) allows status information sharing among multiple modules in the same chassis.

The module automatically switches between primary and secondary systems in case of failure, maintaining continuous operation. Its compact design consumes minimal backplane current while offering robust performance.

Technical Specifications

Features

• Provides redundant operation for remote I/O (RIO) in SLC 500 systems.

• Supports automatic channel switching between DH+/RIO and RS-232/485 communications.

• HSSL transfers retentive data from primary to secondary processors.

• LSL conveys status information among multiple modules on the same chassis.

• Compact and lightweight design, consuming 800 mA at 5V backplane current.

• Supports industrial temperature range 0–60 °C with 5–95% relative humidity.

FAQ

Q1: Is the 1747-BSN original and new?
A1: Yes, it is factory-new, fully original, and ready for shipment.

Q2: Which SLC processors are compatible with this module?
A2: Compatible with SLC 5/02, 5/03, 5/04, and 5/05 processors.

Q3: What communication channels does the module support?
A3: It supports DH+/RIO and RS-232/485 channels simultaneously.

Q4: How does the module ensure redundancy?
A4: It switches control from primary to secondary system automatically during a failure.

Q5: What is the operating temperature range for the 1747-BSN?
A5: Operates between 0–60 °C (32–140 °F) with 5–95% non-condensing humidity.

Q6: What is the typical cable and connector type for installation?
A6: Uses Belden 9463 cable with a 6-Pin Phoenix Connector for connection