I. Product Description
Model: TB846
Order Number: 3BSE021439R1
Full Name of Equipment: Redundant ModuleBus Bus Adapter Communication Module (I/O Communication Module), belonging to ABB System 800xA, AC800M, and S800 I/O systems of ABB.
Function: Establish a dual-redundant module bus link, extend the communication distance of ModuleBus, connect CI840 redundant communication card and TB842 optical transceiver module, realize distributed I/O networking on multiple DIN rails; automatic switching without disturbance occurs in case of bus failure, ensuring uninterrupted transmission of control signals for DCS/PLC, and supporting explosion-proof and ship-class certification stringent working conditions of ABB
Brief Core Parameters
Power Supply: 24VDC (19.2~30V DC) industrial standard control power supply
Bus Interface: Dual-channel DB15 ModuleBus redundant interface
Installation: Standard 35mm DIN rail snap-fit
Size and Weight: 75×75×28mm, net weight 0.15kg
Temperature Range: Operating -20℃ to +60℃; Storage -40℃ to +85℃
Certifications: CE, IEC61131-2, ATEX Zone2, Ship Class ABS/DNV/BV
Companion Accessories: Compatible with TB845, TK801 cables, TB842 optical fiber extension module for ABB
Product Application Scenarios
Thermal / Hydropower / Thermal Power Plants: 800xA DCS boiler, turbine, auxiliary machine redundant I/O station bus expansion to ensure unit safety control
Petroleum Refining, Chemical Plants: Explosion-proof Zone2 area distributed S800 IO redundant communication networking
Metallurgical Steel Production Line: Rolling mill, blast furnace multi-track remote I/O bus extension, master-slave control communication
Ships, Offshore Platforms: Ship power station, self-control system of offshore oil production platform (certified for ship class)
Cement, Paper, Water Treatment Plants: Large-scale process factory AC800M PLC highly reliable redundant automation system expansion
Renovation of Old ABB Systems: Replace aging bus adapter, repair redundant communication link faults
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