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
Navigating Industrial Automation Failures: Types, Causes, and Mitigation Strategies
Modern manufacturing relies heavily on automated control systems to maximize throughput and maintain product quality. However, unplanned downtime in industrial automation can cost facility operators thousands of dollars per hour. Understanding how programmable logic controllers (PLCs), distributed control systems (DCS), and field instrumentation fail empowers engineering teams to implement robust preventive maintenance strategies.
Essential Motion Control Commands: A Practical Guide for Engineers
Automation engineers often rely on precise position and speed control to drive modern factory machinery. Modern industrial systems, such as Programmable Logic Controllers (PLCs) and Distributed Control Systems (DCS), depend heavily on standardized motion instructions. Mastering these commands ensures operational safety, protects mechanical components, and optimizes cycle times across production lines.
The Role of Intrinsic Safety Barriers in PLC and DCS Architectures
Implementing robust protection in hazardous industrial environments represents a fundamental safety requirement in factory automation. Process facilities often handle volatile gases, dusts, and chemical agents that pose significant combustion risks. Consequently, control system engineers must deploy energy-limiting interfaces to isolate safe-area control cabinets from hazardous-area field instrumentation. This article examines the function, selection, and electrical principles of intrinsic safety barriers within modern PLC and DCS networks.