Product Details
Product Description
The Allen-Bradley 1756-L7SP GuardLogix Safety Partner Module is designed to work alongside 1756-L7xS controllers, providing SIL 3 and PLe certified safety functionality. It ensures compliance with stringent safety standards while maintaining seamless integration into ControlLogix chassis systems.
Technical Specifications
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Manufacturer: Allen-Bradley
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Product Line: GuardLogix / ControlLogix
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Part Number: 1756-L7SP
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Product Type: Safety Partner Module for 1756-L7xS Controllers
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Weight: 0.25 kg
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Energy Storage Modules:
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1756-SPESMNSE (removable, no residual WallClockTime backup)
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1756-SPESMNRM (nonremovable, prevents USB and SD card use)
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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, USB port to backplane (basic insulation); type tested at 500 V AC for 60 seconds
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Slot Width: 2 (requires both modules, each occupies one slot)
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Module Location: Chassis-based, must be installed immediately to the right of the primary controller
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Compatible Chassis: 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17
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Compatible Power Supplies: 1756-PA72, 1756-PB72, 1756-PA75, 1756-PB75
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Wire Category: Category 3 (USB ports)
Application Scenarios
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Safety-Critical Automation: Provides SIL 3 and PLe safety compliance for GuardLogix systems
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Industrial Control Systems: Ensures redundancy and secure operation in manufacturing and process environments
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Secure Configurations: Nonremovable energy storage module prevents unauthorized USB or SD card access
FAQ
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Q: What is the role of the 1756-L7SP? A: It functions as a safety partner for GuardLogix controllers, enabling SIL 3 and PLe safety compliance.
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Q: Which energy storage modules are supported? A: The 1756-L7SP supports 1756-SPESMNSE (removable) and 1756-SPESMNRM (nonremovable).
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Q: Where should the module be installed? A: It must be placed in the chassis slot immediately to the right of the primary controller.
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Q: How does this differ from standard ControlLogix modules? A: Unlike standard modules, the 1756-L7SP is specifically designed for safety applications with SIL 3/PLe certification.
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
Understanding Root Causes of Unplanned PLC Stop Mode in Industrial Automation
Modern Programmable Logic Controllers manage execution through distinct operational states: Run, Stop, Start-Up, and Hold. During power-up, a controller initializes memory registers within Stop mode before briefly transitioning to Start-Up mode. During this phase, internal self-diagnostics evaluate system integrity across hardware and user programs. If the controller detects no critical faults, it enters Run mode to execute the control program continuously. However, any severe system anomaly forces the CPU back into Stop mode immediately to prevent erratic machine behavior across the plant floor.
Human-Machine Interface Design: Essential Guide to HMI Selection, Visualization, and Control System Integration
Human-Machine Interfaces (HMIs) serve as the primary operational window into complex industrial automation systems. Modern HMIs convert raw machine data into clear graphical displays, enabling operators to oversee entire manufacturing processes in real time. Instead of relying on physical control panels full of hardwired switches, engineers program interactive screens using intuitive graphics, dynamic color coding, and responsive touch interfaces. Over my 15 years in control systems engineering, I have observed HMIs transform from basic display screens into sophisticated command centers that drive operational efficiency across DCS and PLC environments.
Understanding Safety Relays in Industrial Automation: Architecture, Operation, and Functional Safety
Standard electromechanical relays provide basic electrical isolation between low-voltage control circuits and high-power output loads. A traditional switching relay features a magnetic coil driving mechanical Common (COM), Normally-Open (NO), and Normally-Closed (NC) contacts. However, standard relays pose severe functional risks when deployed in critical safety interlock circuits. High current inrush or mechanical wear can weld contacts together permanently. If contact welding occurs in an emergency stop circuit, pressing the button fails to halt hazardous machinery movements. Consequently, global functional safety standards prohibit standard relays for critical machine guarding functions.