Brand: Allen Bradley Description: Redundancy Enhanced Module Condition: New Warranty: 1 year Inventory Qty: 6 Payment term: T/T Shipping Port: ShenZhen Allen Bradley 1756-RM2 is the core redundancy module of Rockwell Automation's ControlLogix series. Its main function is to achieve non-disruptive switching through a dual-controller hot standby architecture, ensuring that the system quickly switches to the backup rack (switching time ≤ 50 ms) in the event of a failure to avoid production interruption.
|
Manufacture |
Allen Bradley |
|
Model Number |
1756-RM2 |
|
Country Of Origin |
United States |
|
HS CODE |
8538900000 |
|
Dimension |
25*20*6CM |
|
Packing Dimension |
30*20*10CM |
|
Weight |
1kg |
Input voltage: 5.1V DC (current 1.16A) / 24V DC (current 3.4mA)
Power consumption: 6W (maximum)
Heat dissipation: 21 BTU/hour
Isolation voltage: 30V continuous
Working temperature: 0~60℃
Matching cable: 1756-RMC1 (1m), RMC3 (3m), RMC10 (10m)
Functional features and principles
Redundant architecture: Allen Bradley 1756-RM2 supports dual controller synchronous operation, connecting the main and standby racks through 1756-RMC series fiber optic cables to ensure real-time data synchronization.
Switching mechanism: When the main controller fails, the standby machine takes over control within ≤10 ms, and the scanning time is delayed by about 10 ms during the period to ensure continuous operation.
Non-interference diagnosis: Allen Bradley 1756-RM2 supports online diagnosis, and troubleshooting does not affect system operation.
Hardware isolation: Redundant modules are independently powered to prevent the spread of single-point failures.
Configuration tool: Use RSLinx Classic and Redundancy Module Configuration Tool (RMCT) to configure redundancy parameters, and support automatic synchronization mode settings.
Typical configuration case
Dual-rack redundant system needs to include:
2 ControlLogix chassis of the same model (such as 1756-A4)
2 1756-L7x series controllers (such as 1756-L73)
2 1756-EN2TR Ethernet modules (for active and standby communication).
Allen Bradley 1756-RM2 supports EtherNet/IP and ControlNet dual protocols, achieves high-speed synchronization (up to 1000 Mbps) through optical fiber communication, and adopts a redundant design without single-point failure. It is suitable for fields such as petroleum, chemical industry, and energy that require extremely high system stability.
