Product Details
Product Overview
The Allen Bradley 1756-L73 functions as a high-performance central processing unit within the ControlLogix 5570 family. This Logix5573 controller manages complex discrete, motion, and process applications with high-speed execution and expanded memory capacity. We offer this module as 100% Brand New and Factory Original, ensuring your automation architecture benefits from the latest silicon revisions and full hardware longevity.
Technical Specifications
The 1756-L73 provides significant computational overhead for data-intensive industrial environments:
| Feature | Specification |
| Product Series | ControlLogix 5573 |
| User Memory | 8 MB |
| I/O Memory | 0.98 MB |
| Communication Port | USB 2.0 (Programming and Configuration) |
| Controller Connections | 500 Max |
| Local I/O Capacity | 128,000 Digital / 4,000 Analog |
| Current Draw (1.2 VDC) | 5 mA |
| Current Draw (5.1 VDC) | 800 mA |
| Visual Diagnostics | 4-Character Alpha/Numeric Display |
| Weight | 0.53 lbs (0.24 kg) |
Engineering Advantages
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Elimination of Internal Batteries: The 1756-L73 utilizes energy storage modules (ESM) to power non-volatile memory during shutdowns. This removes the need for scheduled battery replacements and eliminates the risk of memory loss due to sudden battery failure.
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High-Speed Data Processing: The Logix5573 architecture significantly reduces scan times compared to previous generations. It handles high-axis count motion control and complex PID loops simultaneously without degrading system responsiveness.
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Rapid Programming Access: The integrated USB 2.0 port provides a high-speed interface for logic downloads and online monitoring. This local port simplifies commissioning by allowing engineers to bypass complex network configurations for direct hardware access.
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Enhanced On-Module Diagnostics: The 4-character scrolling display provides real-time status codes and error messages. This allows maintenance teams to identify fault conditions or firmware mismatches immediately without connecting a laptop.
FAQs
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Is this 1756-L73 unit brand new?
Yes. Every unit we supply is 100% Brand New in the original manufacturer’s box. We do not provide refurbished or used surplus modules, guaranteeing the full integrity of the internal non-volatile memory.
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Does this controller require a separate battery?
No. The 1756-L73 uses a Capacitor-based Energy Storage Module (ESM). This module charges while the rack has power and provides enough energy to write the project to internal flash memory during a power loss event.
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Can I use the 1756-L73 in a redundant chassis configuration?
Yes. This controller supports high-availability redundancy. When paired with a 1756-RM2 Redundancy Module and an identical 1756-L73 in a secondary chassis, it provides seamless switchover capabilities for critical processes.
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What software version do I need for this module?
The 1756-L73 requires Studio 5000 Logix Designer (or RSLogix 5000 version 20 and later). Always ensure your software version supports the firmware revision installed on the hardware for full feature compatibility.
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
Hub vs Switch vs Router in Industrial Automation Architecture
Modern factory automation relies on reliable industrial networking infrastructure to exchange real-time field data across operational technology systems. Engineers often encounter networking hardware like hubs, switches, and routers when integrating Programmable Logic Controllers, Distributed Control Systems, and SCADA monitoring nodes. Although these devices share physical ports, they operate at different layers of the Open Systems Interconnection reference model and deliver distinct traffic management capabilities.
Marshalling Cabinet Preventive Maintenance: Essential Healthiness Checks for PLC, DCS, and ESD Systems
Marshalling cabinets serve as the vital interface between field instrumentation and control room electronics in modern process facilities. Regular preventive maintenance of these cabinets ensures signal integrity across programmable logic controllers (PLCs), distributed control systems (DCS), and emergency shutdown (ESD) networks. System technicians must execute structured inspection protocols to mitigate environmental risks, identify loose wiring, and maintain continuous operational readiness.
Spatial Computing in Industrial Automation: Elevating PLC and DCS Operations with AR and VR
Industry 4.0 integrates digital intelligence into field operations, transforming factory automation landscapes worldwide. Spatial technologies—specifically Augmented Reality (AR) and Virtual Reality (VR)—redefine how engineers interact with industrial control systems. By bridging computer-generated CAD models with real-time operational technology (OT) data, immersive displays enable intuitive monitoring, rapid diagnostics, and safer maintenance across complex processing facilities.