Allen-Bradley 1769-L24ER-QB1B Embedded I/O processor module

Allen-Bradley 1769-L24ER-QB1B Technical Overview

1. General Description

The 1769-L24ER-QB1B is part of the CompactLogix 5370 series, combining a processor, embedded I/O, and communication interfaces in a compact form factor. It is optimized for applications requiring high-speed control, motion coordination, and seamless integration with Rockwell Automation’s ecosystem. The “QB1B” suffix indicates a specific hardware revision or regional certification (e.g., CE compliance).

2. Key Technical Specifications

• Processor
  • CPU Speed: 500 MHz dual-core processor for deterministic logic execution.
  • Memory: 
    • User Memory: 3 MB (for logic, tags, and user programs).
    • Non-Volatile Memory: Retains programs during power loss.
• I/O Capacity
  • Embedded I/O: 
    • 24 Digital I/O Points (16 inputs, 8 outputs) for direct sensor/actuator interfacing.
    • Supports 24V DC sinking/sourcing configurations.
  • Expansion: Up to 30 additional modules (analog, digital, motion, safety) via the 1769 backplane.
• Communication Interfaces
  • EtherNet/IP Port: Dual-port 10/100 Mbps for SCADA, HMI, and distributed I/O integration.
  • RS-232 Serial Port: For legacy device connectivity (e.g., barcode readers).
  • USB Port: Local programming and firmware updates.
• Motion Control
  • Supports up to 4 axes of coordinated motion (servo or VFD-driven) via embedded motion commands.
• Power Supply
  • Input Voltage: 24V DC (typical for industrial control systems).
  • Power Consumption: ~10W (depends on I/O load).
• Environmental Ratings
  • Operating Temperature: 0°C to +60°C (32°F to 140°F).
  • Humidity: 5–95% non-condensing.
  • Certifications: CE, UL, ATEX (zone 2), and RoHS compliant.

3. Functional Capabilities

1. Advanced Logic Control
   • Execute ladder logic, structured text, and function block diagrams for complex automation tasks.
2. Motion Integration
   • Built-in motion instructions for velocity, position, and torque control (compatible with Kinetix® servo drives).
3. Safety Functions
   • Supports CIP Safety™ protocol for integrating safety I/O modules (e.g., 1769-L3xSER).
4. Network Integration
   • Seamless connectivity with: 
     • Studio 5000 Logix Designer: Unified programming environment.
     • FactoryTalk® View HMIs: Real-time monitoring and control.
     • PlantPAx® DCS: Process automation integration.
5. Data Handling
   • Supports SQL database connectivity, data logging, and OPC UA for Industry 4.0 applications.
6. Scalability
   • Expand with 1769-series modules (e.g., analog I/O, temperature control, communication gateways).

4. Typical Applications

• Machine Control: Packaging, material handling, and assembly lines.
• Process Automation: Batch processing, mixing, and filling systems.
• Motion Systems: Robotic arms, conveyor synchronization, CNC machines.
• Energy Management: Real-time monitoring and optimization.

5. Ordering Information

• Model: 1769-L24ER-QB1B (verify regional variants for certifications like CE or ATEX).
• Accessories: 
  • 1769 power supplies (e.g., 1769-PB2).
  • Communication cables (e.g., 1761-CBL-PM02 for serial connections).
  • Safety I/O modules (e.g., 1769-IA16 for safety inputs).

Key Suffix Decoding

• L24: 24 embedded I/O points.
• ER: EtherNet/IP interface.
• QB1B: Hardware revision/regional compliance (e.g., CE).

6. Software Compatibility

• Studio 5000 Logix Designer (v30+) for configuration and programming.
• FactoryTalk Linx for communication setup.