Product Details
Product Description
The Allen-Bradley 1756-L71S GuardLogix 5571S Controller is a high-performance safety-certified processor module within the ControlLogix family. It combines standard automation control with integrated safety functions, making it suitable for complex applications requiring both high capacity and SIL-rated safety features.
Technical Specifications
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Manufacturer: Allen-Bradley
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Product Line: ControlLogix / GuardLogix 5570 Series
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Part Number: 1756-L71S
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Weight: 0.56 lbs (0.26 kg)
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Module Type: Processor Module
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User Memory: 2 MB
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Safety Memory: 1 MB
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Nonvolatile Memory: 1 GB CompactFlash (included)
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I/O Capacity (Max): 128,000 digital I/O, 4,000 analog I/O
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Standard Tasks: Up to 31
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Safety Tasks: 1 dedicated safety task
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Programs per Task: 100 programs
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Event Tasks: Supports all trigger types
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Built-in Communication: 1 USB port
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Optional Communication Adapters: EtherNet/IP, ControlNet, DeviceNet
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Redundancy: Not supported
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I/O Memory: 0.98 MB
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Current Draw @ 1.2 VDC: 5 mA
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Current Draw @ 5.1 VDC: 800 mA
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Power Dissipation: 2.5 W
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Thermal Dissipation: 8.5 BTU/hr
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Isolation Voltage: 30 V continuous (basic insulation type)
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Enclosure Rating: Open-style (no enclosure)
Application Scenarios
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Safety-Critical Automation: Ideal for applications requiring integrated safety control alongside standard automation tasks
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Large-Scale Systems: Supports extensive I/O capacity for complex manufacturing and process environments
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Flexible Integration: Compatible with multiple communication adapters for diverse industrial networks
FAQ
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Q: What distinguishes the 1756-L71S from standard ControlLogix controllers? A: The 1756-L71S includes dedicated safety memory and tasks, making it suitable for GuardLogix safety applications.
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Q: Does this controller support redundancy? A: No, redundancy is not supported in this model.
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Q: How many programs can run per task? A: Each task can support up to 100 programs.
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Q: What communication options are available? A: Built-in USB plus optional EtherNet/IP, ControlNet, and DeviceNet adapters.
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Q: How does this compare to the 1756-L72S? A: The 1756-L71S offers 2 MB user memory, while the 1756-L72S provides 4 MB, making the latter better suited for larger applications.
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
Why 24V DC Power Supplies Standardize Modern Industrial Automation
Industrial control cabinets worldwide rely on 24V DC as the universal power standard for field instrumentation, sensors, and controllers. Walk into any manufacturing plant, and you will find PLCs, human-machine interfaces (HMIs), and smart actuators running on extra-low voltage DC. Standardizing on 24V DC enhances operational safety, lowers cabinet footprint, and maintains steady control performance across factory networks.
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.
Mastering Modern Industrial Joystick Controls in Heavy Automation
Industrial joysticks play a pivotal role in human-machine interaction across heavy material handling and mobile hydraulics. These tactile controllers translate complex operator movements into precise electrical signals for PLCs, motion controllers, and DCS networks. Consequently, selecting and installing the right joystick architecture ensures operator safety, reduces fatigue, and optimizes equipment performance.