Product Overview

The Allen-Bradley 1769-L19ER-BB1B operates as a high-density, all-in-one Programmable Automation Controller (PAC) inside the CompactLogix 5370 L1 family by Rockwell Automation. Designed specifically to streamline small-to-medium industrial architectures, this module combines an advanced Logix control engine, an integrated 24V DC power supply, and a fixed onboard base of 16 digital inputs and 16 digital outputs into a single, compact 100 mm wide housing. It provides localized machine instrumentation and skid-based systems with top-tier control without requiring extensive separate component mounting.

A primary technical milestone of this controller is its completely battery-free architecture. The hardware uses internal, maintenance-free energy storage capacitors to power the Real-Time Clock (RTC) and automatically dump volatile user memory onto the included 1784-SD1 1GB Secure Digital card during unexpected power interruptions.

We supply this product exclusively as 100% brand new, original, and factory-sealed within its official packaging to guarantee long-term system health, authentic hardware execution, and complete factory validation.

Technical Specifications

The table below logs the exact electrical, memory, physical, and network parameters for the 1769-L19ER-BB1B processor. All entries utilize strict ASCII characters to maintain perfect compatibility with your documentation engines.

Engineering Advantages

• Maintenance-Free Capacitor Energy Storage: The battery-free configuration drops preventative maintenance costs down to zero. The onboard energy storage components handle memory retention duties perpetually, eliminating the plant downtime typically caused by low PLC battery faults and manual battery replacements.
• Dual-Port DLR Network Fault Tolerance: Dual EtherNet/IP ports natively support Device Level Ring (DLR) topologies. This topology adds physical layer redundancy to the machine control scheme, allowing the network to maintain steady data streams even if an Ethernet cable breaks or a single node drops off the ring.
• Local 1734 POINT I/O Scalability: While the unit carries 32 embedded digital points for instant device wiring, the lower expansion bus allows engineers to plug up to six 1734 POINT I/O modules directly onto the right side of the controller. This interface allows easy system tailoring with specialty analog, RTD, or thermocouple cards.
• Unified Control Environment: The 1769-L19ER-BB1B programs via standard Studio 5000 Logix Designer or RSLogix 5000 software. This grants developers access to identical instruction sets, tagging structures, and data types utilized in heavy-duty ControlLogix platforms, drastically compressing software engineering costs.

FAQs

• Is this 1769-L19ER-BB1B unit a brand new component or a surplus repair?
• We offer this controller solely as a 100% brand new, authentic, original Allen-Bradley product. It ships in its unopened factory-sealed box to verify that you receive original component condition and factory-fresh internal hardware.
• Does this L1 controller utilize the standard 1769 Compact I/O modules for local expansion?
• No. Unlike L2 or L3 CompactLogix processors, the L1 series (including the 1769-L19ER-BB1B) leverages the ultra-compact 1734 POINT I/O line for local chassis expansion. It accepts up to six 1734 modules mounted directly onto its built-in expansion bus.
• What happens to my running process data when the 24V DC source drops out?
• The instant a power drop occurs, the internal capacitor circuit keeps the processor active just long enough to dump all active tags and system state files into non-volatile storage on the bundled 1784-SD1 1GB SD card, preserving your data without an attached battery.
• Can I use the integrated front USB port for full runtime machine HMI communications?
• No. Rockwell Automation designs the built-in USB 1.1 port specifically for initial IP address assignment, firmware flashing, and quick diagnostic uploads or downloads. You must execute standard runtime HMI and enterprise network communication over the dual EtherNet/IP ports.