Product Overview

• Part No: 3BSE018741R50
• Brand: ABB
• Applicable Series: AC800M Control System
• Type: Redundant Controller Interconnection Communication Module

• FunctionBuild high-speed data links between multiple AC800M controllers; realize real-time data synchronization for redundant CPU groups; transmit control logic data, process parameters and fault information cross-controller; ensure bumpless switchover during master-slave redundancy switching.

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Core Features

• Support dual redundant wiring design to eliminate single communication failure risk
• RS485 physical interface, compatible with standard industrial wiring layout
• Conformal coating on PCB for dust-proof, moisture-proof and anti-electromagnetic interference
• Front LED indicators clearly display link status, power supply and communication faults
• Built-in communication self-diagnosis, automatically report disconnection and signal anomalies
• Standard rack plug-in installation, compatible with AC800M backplane

• Low power consumption, stable long-term continuous operation

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Technical Specifications

• Power Supply: 24VDC via rack backplane, power consumption 50mA
• Operating Temperature: -20℃ ~ +70℃
• Storage Temperature: -40℃ ~ +85℃
• Communication Interface: RS485
• Supported Protocol: Modbus RTU
• Dimension: 120mm × 100mm × 50mm
• Net Weight: 1.5kg
• Protection Class: IP20, cabinet internal installation only
• HS Code: 85389091

• Supply: Brand new original and fully tested refurbished modules available

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Compatibility

• Perfectly compatible with all AC800M series controllers including PM864, PM866, PM867
• Matches AC800M standard control rack and all supporting communication cards
• Direct plug-and-play replacement for identical part number

• Can be paired with 3BSE018741R30 for redundant link collocation

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Application

• Redundant communication networking for thermal power, chemical, papermaking DCS systems
• Multi-controller data interconnection for water treatment, metallurgy automation projects
• Spare part replacement and cabinet maintenance for ABB AC800M old control systems
• Redundancy upgrade of factory process control cabinets