Product Details
Product Overview
The Allen Bradley 1756-L73SK functions as a high-performance GuardLogix safety controller within the ControlLogix 5570 family. This module provides a dual-processor solution to manage both standard and safety-related functions simultaneously. Engineers deploy this specific "K" version—which features conformal coating—to maintain system integrity in harsh environments where moisture or chemical contaminants threaten standard electronics. It delivers SIL 3 and PLe (Performance Level e) safety ratings, making it a critical component for high-risk industrial machinery and automated processes.
Technical Specifications
| Feature | Specification Details |
| Manufacturer | Allen Bradley / Rockwell Automation |
| User Memory | 8 MB |
| Safety I/O Memory | 0.98 MB |
| Maximum Digital I/O | 128,000 |
| Maximum Analog I/O | 4,000 |
| Current Draw (5.1V DC) | 800 mA |
| Power Dissipation | 2.5 Watts |
| Isolation Voltage | 30V (Continuous) |
| Weight | 0.91 kg (2.00 lbs) |
| Condition | 100% Brand New Original |
Engineering Advantages
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Environmental Resilience: The conformal coating on the 1756-L73SK protects internal circuitry against salt spray, humidity, and corrosive vapors. This eliminates the need for expensive specialized enclosures in many industrial settings.
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High-Density Control: With a capacity of 128,000 total I/O points, this controller manages massive architectural footprints from a single chassis, reducing the hardware overhead for large-scale factory deployments.
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Streamlined Safety Integration: It utilizes the Studio 5000 environment to manage both safety and standard logic. This unified programming approach slashes development time and simplifies troubleshooting compared to split-system architectures.
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Efficient Power Management: Drawing only 5mA at 1.2V DC and dissipating just 2.5 Watts, the module minimizes heat buildup within the ControlLogix chassis, extending the lifespan of adjacent modules.
FAQs
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Does the 1756-L73SK require a separate safety partner module?
Yes. As part of the GuardLogix 5570 series, the 1756-L73SK requires a 1756-L7SP safety partner to achieve its rated safety integrity levels.
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What is the primary difference between the 1756-L73S and the 1756-L73SK?
The "K" suffix designates a conformal coating. While both share identical logical specifications and 8MB memory, the 1756-L73SK offers superior protection against atmospheric contaminants and harsh industrial climates.
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Is this product provided in its original packaging?
We supply this unit as 100% Brand New in original factory packaging to ensure E-E-A-T compliance and guaranteed hardware longevity for your critical safety systems.
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Can I use this controller for motion control applications?
Absolutely. The 1756-L73SK supports Integrated Motion on EtherNet/IP, allowing you to synchronize safety logic with complex motion profiles in a single controller.
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
Ensuring Operational Continuity: The Strategic Value of Redundant Automation Systems
In modern industrial landscapes, unplanned downtime is the ultimate adversary. For sectors relying on complex PLC and DCS architectures, a single hardware failure can trigger catastrophic production losses. Therefore, implementing redundant automation systems is no longer a luxury; it is a fundamental requirement for mission-critical operations. In this article, I analyze why redundancy remains the backbone of reliable industrial infrastructure.
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.