ABB TB711FC1 3BDH000365R0001 CPU Terminal Base Unit

ABB TB711FC1 (3BDH000365R0001) is a CPU terminal base unit for ABB AC 800M System 800xA DCS controller platform. It provides mechanical mounting, power supply distribution and multi‑interface signal routing for PM783F CPU module, establishing physical and electrical connection between controller, communication modules and external field devices.

This base unit integrates 24VDC power input, Ethernet RJ45 port, serial COM interfaces and one coupler slot for fieldbus module installation. It adopts DIN‑rail mounting structure, supports quick hot‑swap‑related module replacement, widely used as spare replacement for petrochemical, power and process plant 800xA DCS cabinet maintenance and retrofit projects.

Main Specifications

• Brand: ABB
• Model: TB711FC1, Part No: 3BDH000365R0001
• Product Type: CPU Terminal Base Unit
• Applicable Controller: PM783F CPU for AC 800M System 800xA
• Power Supply: 24 VDC power input
• Interfaces: Ethernet RJ45, COM1/COM2 serial ports, one coupler slot
• Mounting: Standard DIN‑rail installation
• Mechanical Dimension: 30 × 135 × 95.5 mm
• Certification: CE industrial compliance certification
• Operating Temperature Range: 0°C ~ +60°C

Core Functions

• Provide mechanical mounting base for PM783F CPU and matching coupler communication module
• Distribute 24VDC working power to CPU unit and installed fieldbus coupler module
• Realize signal routing for Ethernet, serial communication and internal backplane bus signal transmission
• Reserve coupler slot for PROFIBUS or other fieldbus communication module expansion
• DIN‑rail mounting design saves cabinet installation space for AC800M controller station layout
• Standard internal bus connector ensures stable electrical connection between base and CPU module
• Support modular disassembly, simplify on‑site module replacement during equipment maintenance
• Isolate external wiring stress to protect internal CPU circuit from mechanical damage
• Work as physical carrier to build complete AC 800M controller hardware station
• Offer reliable power and signal transmission foundation for System 800xA process automation control system

Application Scenarios

• Petrochemical plant System 800xA DCS main controller station control cabinets
• Power plant auxiliary process AC 800M automation controller rack units
• Chemical industry continuous production process DCS control system hardware stations
• Metallurgy industry process‑control DCS controller cabinet application projects
• Water‑treatment plant large‑scale process automation controller installation racks
• Manufacturing large‑factory process monitoring and interlock DCS hardware configuration
• 800xA system renovation, CPU terminal‑base replacement and cabinet upgrade projects
• AC 800M controller station maintenance and spare‑parts backup for existing process facilities
• ABB System 800xA DCS spare‑parts inventory and on‑site automation cabinet maintenance supporting projects