ABB CI840 PROFIBUS‑DP‑V1 Fieldbus Communication Interface Module

Technical Specifications Model: CI840 Communication Protocol: PROFIBUS‑DP‑V1 Baud Rate: 9.6 kbps‑12 Mbps auto‑adaptation Interface: 9‑pin D‑Sub PROFIBUS‑DP connector, ModuleBus terminal interface Power Supply: 24 V DC, 19.2‑30 V DC operating range Operating Temperature: 0 ℃ to +55 ℃ Storage Temperature: ‑25 ℃ to +70 ℃ Relative Humidity: 5‑95 %, non‑condensing Mounting Type: DIN‑rail mounting, match TU846 / TU847 terminal base unit Protection Class: IP20 Certifications: CE, cULus, ATEX Zone2 certification

Functional Features Operates as PROFIBUS‑DP‑V1 slave station to connect S800 I/O racks to PROFIBUS host controller. Supports ModuleBus dual‑channel connection for S800 I/O modules. Realizes HART pass‑through function for HART‑capable analog I/O modules. Supports Hot Configuration In Run without system shutdown. Complete hardware fault diagnosis for I/O modules, power supply and bus communication. Supports communication line redundancy and 1+1 module redundancy configuration. Front‑panel LED indicators display power, running, bus communication and fault status. Supports hot‑swap of S800 I/O modules under system running condition. Built‑in fused isolated power supply for field I/O modules.

Application Scenarios S800 distributed remote I/O system PROFIBUS‑DP interface spare‑part replacement. Petrochemical, power plant, pulp and paper process automation projects adopting S800 I/O. High‑reliability redundant control cabinet reconstruction and upgrade.

Installation Requirements Snap CI840 module onto TU846 or TU847 terminal base unit and lock mechanical buckle. Mount whole assembly onto standard DIN‑rail inside control cabinet. Connect PROFIBUS‑DP shielded twisted‑pair cable to front‑side D‑Sub connector, install terminal matching resistor at bus segment end. Connect ModuleBus field bus cable to corresponding screw terminals. Complete cabinet protective earthing according to ABB system grounding specifications. Separate field‑bus signal cables and high‑power power cables. Ambient operating temperature shall stay within 0 ℃ ~ +55 ℃ without condensation.