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
Essential Best Practices for PLC Wiring and Installation in Industrial Automation
Successful control system deployment begins with thoroughly reviewing manufacturer technical documentation. Controllers from major brands like Allen-Bradley, Siemens, and Schneider Electric feature unique terminal layouts. Engineers must verify voltage requirements before connecting power cables to prevent catastrophic equipment damage. Standard line connections require strict adherence to regional electrical codes and proper wire color coding. Furthermore, panel builders should always establish a robust low-impedance ground connection using at least 16-AWG copper conductor tied directly to the main plant grounding grid.
Demystifying Programmable Logic Controllers: Comprehensive Guide to PLC Classification and Selection in Industrial Automation
Modern industrial automation heavily relies on Programmable Logic Controllers (PLCs) to drive factory floor efficiency. Over my 15 years as an industrial automation expert working with DCS, TSI, and control systems, I have seen PLCs evolve into the central nervous system of modern manufacturing. Selecting the right controller requires a deep understanding of PLC types based on physical size, hardware architecture, and power supply configurations.
Comprehensive Guide to PLC Types in Modern Industrial Automation
Modern industrial automation relies on programmable logic controllers to govern critical factory operations. System integrators classify PLCs based on scale, hardware architecture, and power supply design. Understanding these core categories enables automation engineers to select the right control system architecture. Consequently, proper hardware selection optimizes performance while minimizing long-term operational costs.