Product Details
Product Overview
The Allen Bradley 1756-L55M23 serves as a high-performance central processing unit within the ControlLogix platform. This module executes complex control loops and manages high-speed discrete logic for large-scale industrial applications. As a 100% Brand New and Original unit, it ensures maximum uptime for mission-critical automation architectures, providing the computational power necessary for demanding motion and sequential control tasks.
Technical Specifications
This processor delivers robust data handling capabilities and fast execution speeds. The following table details the core engineering parameters:
| Feature | Specification |
| Product Line | ControlLogix |
| User Memory (RAM) | 1.5 MB |
| Nonvolatile Memory | 1.5 MB |
| Total I/O Capacity | 128,000 Max |
| Analog I/O Support | 4,000 Input / 2,000 Output |
| Program Scan Time | 0.08 milliseconds |
| Backplane Current (5V DC) | 1.23 Amps |
| Backplane Current (24V DC) | 14 milliamps |
| Vibration Resistance | 10–500 Hertz |
| Humidity Range | 5–95% (Non-condensing) |
| Battery Compatibility | 1756-BA1 or 1756-BATM |
Engineering Advantages
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High-Velocity Logic Execution: The 0.08ms scan time allows the system to respond instantly to sensor inputs, minimizing latency in high-speed packaging or assembly lines.
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Massive I/O Scalability: With support for up to 128,000 I/O points, this single module manages entire plant-wide sub-systems, reducing the need for multiple redundant controllers and simplifying the network topology.
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Electromagnetic Resilience: The hardware architecture withstands significant vibration (up to 500 Hz), making it suitable for installation directly on heavy machinery skids or near large motor drives.
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Dual-Memory Reliability: The 1.5MB nonvolatile memory protects your logic programs against total power loss, ensuring the controller recovers its state immediately upon reboot without manual intervention.
FAQs
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What battery options maintain the user memory during power cycles?
The module requires either the 1756-BA1 or the 1756-BATM battery assembly. We recommend replacing the battery during scheduled annual maintenance to prevent program loss.
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Does this unit support analog-heavy applications?
Yes. The 1756-L55M23 handles up to 4,000 analog inputs and 2,000 analog outputs, making it an ideal choice for complex process control and PID loops in chemical or water treatment facilities.
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Is this a refurbished or used unit?
No. We supply this 1756-L55M23 as a 100% Brand New original product in its factory packaging, ensuring full compliance with your facility's quality standards and long-term reliability.
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
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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.