Product Details
Product Overview
The Allen Bradley 1769-L24ER-QBFC1B acts as a versatile, high-performance controller within the CompactLogix™ 5370 L2 family. This processor integrates motion control, safety, and standard drive capabilities into a single, compact platform. It provides a robust solution for small-to-medium machine applications by combining 750 KB of user memory with extensive embedded I/O. We supply this unit as 100% brand new and original, ensuring your automation system benefits from the latest hardware revision and full manufacturer integrity.
Technical Specifications
The 1769-L24ER-QBFC1B utilizes a sophisticated hardware architecture to manage complex logic and communication tasks:
| Feature | Specification |
| User Memory | 750 KB |
| Nonvolatile Memory | 1784-SD1 (1 GB included) / Supports 1784-SD2 (2 GB) |
| Local Expansion | Supports up to Four (4) 1769 Compact I/O Modules |
| Current Draw | 1 A @ 5V DC / 0.8 A @ 24V DC |
| Power Dissipation | 21 Watts (Maximum) |
| Isolation Voltage | 30V Continuous (Basic Insulation) |
| Ethernet Connection | RJ-45 Dual Ports (Fast Ethernet) |
| Mounting | DIN Rail or Panel Mount |
| Temperature Code | T3C (North America) / T4 (IEC) |
| Module Width | 140 mm (5.51 in.) |
| Weight | 0.9 kg (1.9 lb) |
Engineering Advantages
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Embedded I/O Density: This controller features high-density embedded I/O points, reducing the need for additional expansion modules. This configuration lowers the total system cost and significantly shrinks the control cabinet footprint.
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Dual-Port Ethernet Connectivity: The integrated dual Ethernet ports support Device Level Ring (DLR) topologies. This ensures network resiliency; the system maintains communication even if a single point in the network ring breaks, preventing unplanned downtime.
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Enhanced Memory Reliability: Every unit ships with a 1784-SD1 1 GB Secure Digital card. This nonvolatile storage preserves your program and data tags without requiring a battery, simplifying long-term maintenance.
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Flexible Mounting and Installation: The hardware supports both DIN rail and panel mounting. Use M4 or #8 screws with a torque of 1.1–1.8 N·m to ensure a secure installation in high-vibration environments.
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Robust Signal Integrity: The 30V continuous isolation protects the logic system from field-side noise. The module passes 500V AC testing for 60 seconds, ensuring electrical safety and reliable signal processing in harsh industrial zones.
FAQs
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What type of wiring does the 1769-L24ER-QBFC1B require for power terminals?
Use 22–14 AWG solid copper wire rated at 75 °C (167 °F) or higher. Strip the insulation to 8 mm (0.31 in) and tighten the screws to a torque of 1.0–1.2 N·m (8.9–10.6 lb·in) to ensure a gas-tight, vibration-resistant connection.
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How many expansion modules can I add to this controller?
The 1769-L24ER-QBFC1B supports a maximum of four (4) local 1769 Compact I/O modules within a single I/O bank. This allows for tailored expansion if the embedded I/O does not meet your specific project requirements.
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Is this product a brand new Allen Bradley original?
Absolutely. We guarantee that every 1769-L24ER-QBFC1B unit we ship is 100% brand new in original factory-sealed packaging. We do not provide refurbished or used hardware.
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Does the controller require a separate power supply for the logic?
The unit features an embedded 24V DC isolated power supply. You must provide a stable 24V DC input to the power terminals to energize the controller and the local I/O bank.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Selecting the Right Cables for Industrial Automation: A Comprehensive Guide
Selecting the appropriate cabling infrastructure is critical for the success of any industrial automation project. Improper cable selection often leads to signal degradation, system instability, and costly downtime. As an automation engineer, I frequently see projects compromised by poor cabling choices in harsh industrial environments. This guide simplifies the complex landscape of cabling to help you make informed decisions for your PLC, DCS, and control systems.
Preventing Spurious Trips in Emergency Stop Systems: A Technical Guide
In industrial automation, the Emergency Stop (E-Stop) pushbutton is the ultimate safety line. However, relying on a single Normally-Closed (NC) contact can sometimes lead to unexpected spurious trips. As a control systems engineer, I have seen these nuisance trips halt entire production lines, causing significant downtime. Understanding why these components fail and how to implement robust architecture is essential for any reliable DCS or PLC-based safety system.
Sequencing Induction Motor Control with PLC Logic: Best Practices
In modern industrial automation, controlling a group of induction motors requires precision and safety. Uncontrolled simultaneous startup of multiple large motors often causes significant voltage dips, potentially triggering protective trips. Therefore, implementing a sequential startup and shutdown strategy is essential. This approach minimizes inrush current and ensures the system operates within established power constraints. A robust PLC program serves as the ideal engine for orchestrating these sequences.