Allen-Bradley 1769-L16ER-BB1B CompactLogix 5370 L1 Controller

CompactLogix 5370 L1 Controller Overview

The Allen-Bradley 1769-L16ER-BB1B is a processor module from the CompactLogix 5370 L1 family, designed for machine and process automation. With 384 Kbytes of user memory and support for up to six 1734 Point I/O modules, this controller offers flexibility without sacrificing performance.

Technical Specifications Breakdown

Key parameters for the 1769-L16ER-BB1B are listed below for quick reference:

Industry Applications

Its dual Ethernet ports support Device Level Ring (DLR) topology, enabling redundant communication to minimize downtime. The embedded 16 sinking digital inputs and 16 sourcing digital outputs allow direct control of sensors and actuators, reducing the need for separate I/O modules in smaller applications.

Installation and Setup Guidance

Mount the 1769-L16ER-BB1B on a DIN rail in a clean, dry enclosure. Connect 24 VDC power to the input terminals. Use the built-in USB port for initial configuration or the dual Ethernet ports for network integration. When adding up to six 1734 Point I/O modules, install them to the right of the controller and ensure total backplane current draw does not exceed 1 Amp at 5 VDC. Use copper wire rated for 75 °C (167 °F) or greater, with sizes from 22 to 14 AWG solid, for signal terminations.

Maintenance and Reliability

Periodically inspect the controller for dust accumulation and ensure adequate ventilation. The controller uses an internal energy storage solution, eliminating the need for battery replacement. Verify that all connections remain tight and that the SD card (1 GB included) is properly seated for non-volatile memory backup.

Compatibility and Integration

The 1769-L16ER-BB1B communicates via EtherNet/IP and supports up to 256 CIP connections. Use the dual Ethernet ports for linear, star, or DLR topologies to suit your network architecture.

Selection Guide and Purchasing Advice

When selecting this controller, consider your I/O count and network requirements. For applications needing more than 16 embedded I/O points, add up to six 1734 Point I/O modules. Verify current lifecycle status and availability with AutoDCSTech before ordering. Our team can help you confirm compatibility and recommend accessories like the 1769-RTBN18 replacement terminal block.