Product Details
Overview
The Allen-Bradley 1756-RM is a ControlLogix redundancy module designed to provide seamless system switchover and increased operational reliability in mission-critical automation environments. It ensures continuous controller operation by synchronizing data between redundant ControlLogix chassis, minimizing downtime during primary system failure or maintenance.
Technical Specifications
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Manufacturer: Allen-Bradley
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Product Line: ControlLogix Series
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Model / Part Number: 1756-RM
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Product Type: Redundancy Module
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Weight: 1.13 lbs (0.51 kg)
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Mounting Type: Chassis-based, installable in any slot
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Current Draw:
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1.2 V DC: 4 mA
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5.1 V DC: 1.2 A
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24 V DC: 120 mA
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Power Dissipation: 9 W
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Thermal Dissipation: 31 BTU/hr
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Operating Temperature: 0°C to 60°C (32°F to 140°F)
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Storage Temperature: -40°C to 85°C (-40°F to 185°F)
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Temperature Code: IEC T4
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Compatible Chassis:
1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17 -
Compatible Power Supplies:
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Standard: 1756-PA72, 1756-PA75, 1756-PB72, 1756-PB75
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Redundant: 1756-PA75R, 1756-PB75R, 1756-PSCA2
Key Features
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Enables full system redundancy for ControlLogix architectures
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Real-time synchronization between primary and secondary controllers
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Automatic system switchover without process interruption
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Chassis-based design allows flexible installation in any slot
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Compliant with global industrial safety and EMC standards
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Works with both standard and redundant power supplies
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Ideal for high-availability and fault-tolerant control systems
Application Scenarios
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Continuous process control systems
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Power generation and utility automation
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Oil & gas and refinery applications
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Pharmaceutical and food manufacturing lines
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High-availability control environments
FAQs
Q: What is the primary function of the 1756-RM module?
A: The 1756-RM provides system redundancy by allowing two ControlLogix controllers to operate in a synchronized, fault-tolerant configuration.
Q: Can the 1756-RM be installed in any slot?
A: Yes, it is chassis-based and can be installed in any available slot of a compatible ControlLogix chassis.
Q: What happens during a switchover?
A: The module automatically transfers control to the secondary system with minimal delay, ensuring uninterrupted operation.
Q: What power supplies are compatible with the 1756-RM?
A: It supports both standard and redundant power supplies, including models 1756-PA75R, 1756-PB75R, and 1756-PSCA2.
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
Master Acceptance Testing: Understanding FAT and SAT in Industrial Control Systems
Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT) serve as critical quality assurance gateways in complex industrial control systems. Both procedures verify that programmable logic controllers (PLCs), distributed control systems (DCS), and associated field devices meet strict functional specifications. However, executing these tests effectively requires clear delineation between off-site staging and final field commissioning.
Industrial Networking Essentials: Demystifying Hubs, Switches, and Routers in Control Systems
Industrial automation relies heavily on robust networking infrastructure to connect programmable logic controllers (PLCs), distributed control systems (DCS), and human-machine interfaces (HMIs). Modern factory automation environments generate vast amounts of real-time operational data across deterministic networks. Understanding the structural differences between hubs, switches, and routers ensures optimal traffic segmentation, minimizes latency, and maintains high network availability.
Safety Relays in Industrial Automation: Fundamentals, Design Standards, and Fail-Safe Architecture
Safety relays form the bedrock of functional safety in modern factory automation, preventing catastrophic equipment failure and protecting plant personnel. While standard electromechanical relays handle basic load switching, they lack the redundant diagnostics required for high-risk industrial environments. Modern industrial automation platforms—including programmable logic controllers (PLCs) and distributed control systems (DCS)—rely on specialized safety relays to monitor field devices and isolate hazards instantly.