Allen Bradley 1769-L27ERM-QBFC1B CompactLogix Controller

Product Overview

The Allen-Bradley 1769-L27ERM-QBFC1B is a high-performance, all-in-one packaged controller from the CompactLogix™ 5370 L2 family. This controller is designed for small to medium-sized applications that require integrated motion, high-speed discrete I/O, and versatile analog capabilities in a single, compact form factor. With support for up to 16 axes of Integrated Motion over EtherNet/IP™ and built-in "Universal" analog inputs (supporting Thermocouple, RTD, Voltage, and Current), it provides an exceptionally flexible solution for complex machine control.

Technical Specifications

• Manufacturer: Allen-Bradley (Rockwell Automation)

• Product Line: CompactLogix 5370 L2

• Part Number: 1769-L27ERM-QBFC1B

• User Memory: 1 MB

• EtherNet/IP Nodes: Supports up to 16 nodes

• Integrated Motion: Up to 16 axes over EtherNet/IP

• Digital I/O: 16 Sink/Source 24V DC Inputs; 16 Sourcing 24V DC Outputs

• Universal Analog Inputs: 4 Channels (Thermocouple, RTD, Voltage, Current, Resistance)

• Analog Outputs: 2 Channels (Voltage: ±10V, 0-10V, 0-5V, 1-5V; Current: 0-20mA, 4-20mA)

• High-Speed Counter (HSC): 4 Channels / 4 Outputs

• Communication Ports: 2 EtherNet/IP (Dual Port for DLR topology); 1 USB 1.1 (Console)

• Expansion: Supports up to 4 additional 1769 Compact I/O modules

• Power Supply: Integrated 24V DC Input Power Supply

• Weight: 0.79 kg (1.75 lbs)

Key Features

• High-Speed Universal Analog: The "BFC" designation indicates a "Big Fast Combination" of I/O. The analog inputs are remarkably versatile, allowing direct connection of temperature sensors (RTD/TC) and standard process signals without external transmitters.

• Integrated Motion over EtherNet/IP: Simplifies motion architecture by eliminating the need for dedicated motion modules or Sercos networks.

• Dual Ethernet Ports: Features an integrated Ethernet switch that supports Device Level Ring (DLR) topologies, increasing network resiliency and reducing wiring costs.

• No Battery Required: Utilizes an internal energy-storage solution to write memory to the onboard non-volatile (SD) card during power-loss events, eliminating the need for lithium batteries.

• Multi-Language Programming: Supports Relay Ladder Logic (RLL), Structured Text (ST), Function Block Diagram (FBD), and Sequential Function Chart (SFC).