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1756-RM2 | Allen-Bradley ControlLogix Redundancy Module with up to 1000 Mbps
- Regular price
- $4,152.00
- Sale price
- $4,152.00
- Regular price
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Product Description P/N: 1756-RM2
Description
The Allen-Bradley 1756-RM2 is a ControlLogix redundancy module designed to synchronize paired controllers across redundant chassis for high-availability industrial systems. It supports synchronization speeds up to 1000 Mbps, enabling rapid controller switchover and minimal downtime during fault conditions.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | PLC Modules |
| Part Number | 1756-RM2 |
| Subcategory | Redundancy Modules |
| Series | ControlLogix |
| Module Type | Enhanced Redundancy Module |
| Supported Controllers | Logix 5560 / Logix 5570 |
| Synchronization Speed | Up to 1000 Mbps |
| Switchover Time | ~20 ms |
| Connector Type | LC-type fiber optic |
| Cable Type | 8.5/125 µm single-mode fiber |
| Supported Cable Lengths | 1 m, 3 m, 10 m (RMC1, RMC3, RMC10) |
| Maximum Distance | 10 km |
| Wavelength | 1310 nm |
| Channels | 1 |
| Wire Size | 20 AWG |
| Current Draw | 1.16 A at 5.1 VDC; 3.4 mA at 24 VDC |
| Power Dissipation | 6 W (thermal 21 BTU/hr) |
| Operating Temperature | 0–60°C (32–140°F) |
| Enclosure | Open |
| Dimensions | 5.51 × 4.41 × 5.71 in |
| Manufacturer | Rockwell Automation |
Information About 1756-RM2
The 1756-RM2 is an enhanced ControlLogix redundancy module engineered to maintain continuous, coordinated operation between primary and secondary controllers. Installed as a pair—one in each chassis—the modules exchange synchronization data over single-mode fiber optics using LC-type connectors and support cable lengths up to 10 km. Cross-loading, diagnostics, and high-speed redundancy updates ensure seamless controller transition with typical switchover times of approximately 20 milliseconds. Designed for flexibility, the 1756-RM2 can occupy any slot in a ControlLogix chassis and supports up to seven ControlNet or EtherNet/IP communication modules used in redundancy architectures.
Key Features:
- High-Speed Synchronization: Supports up to 1000 Mbps redundancy bandwidth when paired with identical modules.
- Fast Controller Switchover: Enables controller transition in as little as 20 ms to maintain system continuity.
- Fiber-Optic Connectivity: Uses LC-type connectors with 8.5/125 µm single-mode fiber for long-distance redundancy links.
- Wide Controller Compatibility: Works with ControlLogix 5560 and 5570 processors in redundant chassis configurations.
- Flexible Installation: Occupies a single chassis slot and can be placed in any open slot within the ControlLogix rack.
- Extended Communication Support: Allows integration of up to seven ControlNet or EtherNet/IP communication modules.
- Robust Diagnostics: Provides interference-free monitoring, status reporting, and fault detection.
- Long-Distance Redundancy: Supports fiber runs up to 10 km for remote or distributed controller placements.
The 1756-RM2 delivers the reliability and precision required for high-availability and fault-tolerant ControlLogix automation systems.
Description
The Allen-Bradley 1756-RM2 is a ControlLogix redundancy module designed to synchronize paired controllers across redundant chassis for high-availability industrial systems. It supports synchronization speeds up to 1000 Mbps, enabling rapid controller switchover and minimal downtime during fault conditions.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | PLC Modules |
| Part Number | 1756-RM2 |
| Subcategory | Redundancy Modules |
| Series | ControlLogix |
| Module Type | Enhanced Redundancy Module |
| Supported Controllers | Logix 5560 / Logix 5570 |
| Synchronization Speed | Up to 1000 Mbps |
| Switchover Time | ~20 ms |
| Connector Type | LC-type fiber optic |
| Cable Type | 8.5/125 µm single-mode fiber |
| Supported Cable Lengths | 1 m, 3 m, 10 m (RMC1, RMC3, RMC10) |
| Maximum Distance | 10 km |
| Wavelength | 1310 nm |
| Channels | 1 |
| Wire Size | 20 AWG |
| Current Draw | 1.16 A at 5.1 VDC; 3.4 mA at 24 VDC |
| Power Dissipation | 6 W (thermal 21 BTU/hr) |
| Operating Temperature | 0–60°C (32–140°F) |
| Enclosure | Open |
| Dimensions | 5.51 × 4.41 × 5.71 in |
| Manufacturer | Rockwell Automation |
Information About 1756-RM2
The 1756-RM2 is an enhanced ControlLogix redundancy module engineered to maintain continuous, coordinated operation between primary and secondary controllers. Installed as a pair—one in each chassis—the modules exchange synchronization data over single-mode fiber optics using LC-type connectors and support cable lengths up to 10 km. Cross-loading, diagnostics, and high-speed redundancy updates ensure seamless controller transition with typical switchover times of approximately 20 milliseconds. Designed for flexibility, the 1756-RM2 can occupy any slot in a ControlLogix chassis and supports up to seven ControlNet or EtherNet/IP communication modules used in redundancy architectures.
Key Features:
- High-Speed Synchronization: Supports up to 1000 Mbps redundancy bandwidth when paired with identical modules.
- Fast Controller Switchover: Enables controller transition in as little as 20 ms to maintain system continuity.
- Fiber-Optic Connectivity: Uses LC-type connectors with 8.5/125 µm single-mode fiber for long-distance redundancy links.
- Wide Controller Compatibility: Works with ControlLogix 5560 and 5570 processors in redundant chassis configurations.
- Flexible Installation: Occupies a single chassis slot and can be placed in any open slot within the ControlLogix rack.
- Extended Communication Support: Allows integration of up to seven ControlNet or EtherNet/IP communication modules.
- Robust Diagnostics: Provides interference-free monitoring, status reporting, and fault detection.
- Long-Distance Redundancy: Supports fiber runs up to 10 km for remote or distributed controller placements.
The 1756-RM2 delivers the reliability and precision required for high-availability and fault-tolerant ControlLogix automation systems.