1756-RM | Allen-Bradley ControlLogix Redundancy Module
1756-RM | Allen-Bradley ControlLogix Redundancy Module
1756-RM | Allen-Bradley ControlLogix Redundancy Module
    1756-RM | Allen-Bradley ControlLogix Redundancy Module
1756-RM | Allen-Bradley ControlLogix Redundancy Module

1756-RM | Allen-Bradley ControlLogix Redundancy Module

Part #: 1756-RM Manufactured by: Allen-Bradley
$844.00
$844.00
4 in Stock
Condition: New-Surplus Original Box
Shipping calculated at checkout.
Product Overview
The 1756-RM redundancy module by Allen-Bradley/Rockwell Automation is available through the ControlLogix product series an...  Read more
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Product Description P/N: 1756-RM

Description / Specifications

Description 

The Allen-Bradley 1756-RM is a ControlLogix redundancy module designed to enable system-level redundancy in critical control applications. It synchronizes two ControlLogix controllers to provide seamless switchover in the event of a fault or failure.

 

 

Technical Specifications 

Brand Allen-Bradley
Series ControlLogix
Part Number 1756-RM
Thermal dissipation 31 BTU per hour
Compatible redundanc Power supply 1756-PA75R, 1756-PB75R, 1756-PSCA2
Compatible Standard Power supply 1756-PA72, 1756-PA75, 1756-PB72, 1756-PB75
Compatible Chassis 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17
Certification CSA, CE, Ex, C-Tick, c-UL-us, FM and KC
IEC temperature code T4
Storage temperature -40 to 85 degrees Celsius (-40 to 185 degrees Fahrenheit)
Operating temperature 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit)
Power dissipation 9 Watts
Mounting Chassis-based, any slot
Current draw at 24 Volts DC 120 milli Amps
Current draw at 5.1 Volts DC 1.2 Amps
Current draw at 1.2 Volts DC 4 milli Amps
Type Redundancy module

  

 

Information About 1756-RM

The 1756-RM is part of the Allen-Bradley ControlLogix 1756 family, developed for high-performance and fault-tolerant automation systems. Installed in a ControlLogix chassis, it links two controllers and keeps their programs, I/O, and communication states synchronized in real time. In the event of a fault, the 1756-RM initiates an automatic switchover to the secondary controller without disrupting system operation. It supports EtherNet/IP communication for redundant architectures and is fully integrated with Logix-based controllers through Studio 5000 software. With built-in status LEDs and diagnostics, the 1756-RM simplifies monitoring and troubleshooting. Its rugged design ensures reliable redundancy in mission-critical environments.

Key Features:

  • Design: Redundancy module for ControlLogix automation systems.
  • Functionality: Synchronizes primary and secondary controllers in real time.
  • Switchover: Provides seamless controller transition during faults.
  • Connectivity: Supports EtherNet/IP for redundant system architectures.
  • Diagnostics: Equipped with LED indicators and fault detection for system status.
  • Compatibility: Works with ControlLogix 1756 chassis and Logix controllers.
  • Installation: Rack-mounted design for ControlLogix platforms.
  • Application Range: Ideal for high-availability systems in process, safety, and mission-critical control.

The 1756-RM delivers the reliability, synchronization, and fault-tolerant operation required for redundancy in ControlLogix-based automation systems.



Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

Frequently Asked Questions about 1756-RM
Question: What is the function of the Allen-Bradley 1756-RM module?
Date Update:30/05/2025
Answer:

The 1756-RM is a ControlLogix redundancy module used to enable and manage controller redundancy in industrial automation systems. It connects two identical controllers in separate chassis, ensuring seamless transition in the event of a controller failure. It continuously monitors system health and syncs the primary and secondary controllers using a fiber optic link. This enhances reliability and reduces downtime in critical applications.

Question: What communication interface does the 1756-RM module use?
Date Update:30/05/2025
Answer:

The module is equipped with a single LC-type fiber optic connector for high-speed communication between redundant controllers. It uses a 1756-RMCx cable to facilitate real-time synchronization. With matched series modules, it achieves data transmission speeds of up to 100 Mbps.

Question: Which chassis and power supplies are compatible with the 1756-RM?
Date Update:30/05/2025
Answer:

The module is compatible with ControlLogix chassis such as 1756-A4, A7, A10, A13, and A17. It supports standard power supplies like 1756-PA72, PA75, PB72, PB75, and redundancy-rated supplies including 1756-PA75R, PB75R, and PSCA2. It can be installed in any slot within the chassis.

Question: What is the operating and storage temperature range of this module?
Date Update:30/05/2025
Answer:

The module operates in a temperature range from 0 to 60°C (32 to 140°F) and can be safely stored between -40 to 85°C (-40 to 185°F). These specifications make it suitable for a wide range of industrial environments.

Question: What are the dimensions and weight of the 1756-RM module?
Date Update:30/05/2025
Answer:

The 1756-RM has compact dimensions suitable for ControlLogix chassis systems and weighs approximately 0.29 kilograms (0.64 pounds). Its small footprint allows easy installation alongside other modules in tight control cabinet spaces.

IQElectro is not an authorized distributor.
IQElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description 

The Allen-Bradley 1756-RM is a ControlLogix redundancy module designed to enable system-level redundancy in critical control applications. It synchronizes two ControlLogix controllers to provide seamless switchover in the event of a fault or failure.

 

 

Technical Specifications 

Brand Allen-Bradley
Series ControlLogix
Part Number 1756-RM
Thermal dissipation 31 BTU per hour
Compatible redundanc Power supply 1756-PA75R, 1756-PB75R, 1756-PSCA2
Compatible Standard Power supply 1756-PA72, 1756-PA75, 1756-PB72, 1756-PB75
Compatible Chassis 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17
Certification CSA, CE, Ex, C-Tick, c-UL-us, FM and KC
IEC temperature code T4
Storage temperature -40 to 85 degrees Celsius (-40 to 185 degrees Fahrenheit)
Operating temperature 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit)
Power dissipation 9 Watts
Mounting Chassis-based, any slot
Current draw at 24 Volts DC 120 milli Amps
Current draw at 5.1 Volts DC 1.2 Amps
Current draw at 1.2 Volts DC 4 milli Amps
Type Redundancy module

  

 

Information About 1756-RM

The 1756-RM is part of the Allen-Bradley ControlLogix 1756 family, developed for high-performance and fault-tolerant automation systems. Installed in a ControlLogix chassis, it links two controllers and keeps their programs, I/O, and communication states synchronized in real time. In the event of a fault, the 1756-RM initiates an automatic switchover to the secondary controller without disrupting system operation. It supports EtherNet/IP communication for redundant architectures and is fully integrated with Logix-based controllers through Studio 5000 software. With built-in status LEDs and diagnostics, the 1756-RM simplifies monitoring and troubleshooting. Its rugged design ensures reliable redundancy in mission-critical environments.

Key Features:

  • Design: Redundancy module for ControlLogix automation systems.
  • Functionality: Synchronizes primary and secondary controllers in real time.
  • Switchover: Provides seamless controller transition during faults.
  • Connectivity: Supports EtherNet/IP for redundant system architectures.
  • Diagnostics: Equipped with LED indicators and fault detection for system status.
  • Compatibility: Works with ControlLogix 1756 chassis and Logix controllers.
  • Installation: Rack-mounted design for ControlLogix platforms.
  • Application Range: Ideal for high-availability systems in process, safety, and mission-critical control.

The 1756-RM delivers the reliability, synchronization, and fault-tolerant operation required for redundancy in ControlLogix-based automation systems.



Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

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