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1756-RM2
REDUNDANCY MODULE
In Stock
Product Describe：
REDUNDANCY MODULE
CONTROLLOGIX
1000 M BITS PER SEC
2 PORTS
FIBER OPTIC IN
FIBER OPTIC OUT
4 CHARACTER ALPHA/NUMERIC DISPLAY
1.16 AMP @ 5.1VDC
3.4 MA @ 24VDC
TWO REQUIRED PER SYSTEM
The 1756-RM2 is an enhanced redundancy module designed for the ControlLogix system to provide high-speed communication between two identical chassis. This model utilizes a dedicated fiber-optic link to synchronize data and state information between the primary and secondary controllers, ensuring a robust redundant architecture for mission-critical automation applications.
1000 Mbps Synchronization Link
High-Speed Data Crossloading
Supports RIUP Functionality
Engineered for superior performance, the 1756-RM2 supports a synchronization speed of up to 1000 Mbps, providing significantly faster data crossloading compared to standard modules. It features Removal and Insertion Under Power (RIUP) capability, allowing the module to be replaced while the system is powered. According to official technical data, the module operates within a temperature range of 0°C to +60°C and is compatible with various 1756-RMCx fiber cables for flexible chassis distancing.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Allen-Bradley 1756-RM2 REDUNDANCY MODULE Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Oil and Gas
Deployed in emergency shutdown (ESD) systems and offshore platform control to ensure continuous operation. The redundancy module facilitates rapid switchover to a secondary controller to prevent hazardous conditions during a primary processor failure.
Power Generation
Integrated into turbine control and substation automation where system uptime is critical for grid stability. It synchronizes large volumes of diagnostic data to maintain seamless control of electrical output and protective relaying.
Chemical Processing
Used in continuous batch processing to manage complex chemical reactions that cannot be interrupted without significant product loss. The fiber-optic link ensures that the secondary chassis is always updated with the latest process states.
Water Treatment
Applied in municipal water distribution and wastewater treatment facilities to prevent service outages in pumping stations. The redundant architecture provides high availability for critical infrastructure monitoring and automated dosing sequences.
Pharmaceutical Manufacturing
Utilized in life sciences production lines where strict regulatory compliance and validated processes require zero downtime. It maintains the integrity of environmental controls and recipe management during hardware maintenance or faults.
Mining Operations
Deployed in heavy-duty conveyor systems and smelting furnace controls to avoid costly production standstills in remote locations. The module supports rugged industrial environments while coordinating complex safety and interlocking logic.
Install the 1756-RM2 module in any slot in the ControlLogix chassis. You must install the redundancy modules in the same slot in both the primary and secondary chassis. Connect the modules by using a 1756-RMCx fiber-optic cable. The fiber-optic cable must maintain a minimum bend radius of 25.4 mm (1.0 in.).
The 1756-RM2 module supports Removal and Insertion Under Power (RIUP). You can insert or remove the module while the chassis power is on. The 4-character display and status indicators provide diagnostic information. Use the Logix Designer application to configure redundancy parameters and monitor the crossload status.
What is the main function of the Allen-Bradley 1756-RM2?
The 1756-RM2 provides high-speed data synchronization between two ControlLogix chassis. It supports a 1000 Mbps fiber-optic link to enable seamless switchover in redundant systems.
What cables are used with the 1756-RM2 module?
The modules are connected using 1756-RMCx fiber-optic cables. These are available in 1 m (3.28 ft), 3 m (9.84 ft), and 10 m (32.81 ft) lengths for chassis-to-chassis communication.
Does the 1756-RM2 support hot-swapping?
The 1756-RM2 supports Removal and Insertion Under Power (RIUP). This allows you to replace the module while the chassis is powered in non-hazardous locations.
What is the power dissipation of the 1756-RM2?
The module has a maximum power dissipation of 6.0 Watts. It draws 1.16 A at 5.1V DC and 3.4 mA at 24V DC from the backplane.
What are the environmental limits for the 1756-RM2?
The operating temperature range is 0°C to 60°C (32°F to 140°F). It is designed for use in a Pollution Degree 2 industrial environment.
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