Products Description
ABB CI627 3BSE009799R1 Fieldbus Communication Interface Module

Technical Specifications
Model: CI627
Part Number: 3BSE009799R1
Brand: ABB
Product Type: AF100 fieldbus communication interface module
Matching System: ABB AC800M Controller, 800xA DCS System
Power Supply: Rack backplane 24VDC
Communication Interface: AF100 fieldbus interface
Transmission Rate: 1.5 Mbps
Installation Method: Rack slot mounting, hot‑swap supported
Operating Temperature: 0℃ ~ +60℃, non‑condensing
Protection Class: IP20
Weight: 0.23kg
Dimension: 70mm ×84mm ×31mm
Compatible System: Power plant DCS, chemical industry, papermaking process control cabinet
Core Function: Dedicated AF100 fieldbus communication module for AC800M DCS system. Realizes data transmission between AC800M controller and AF100 remote I/O stations, completes signal acquisition and output data forwarding, guarantees stable data transmission of AF100 fieldbus system.

Product Details
The CI627 3BSE009799R1 is AF100 fieldbus communication interface module for ABB AC800M and 800xA DCS control system.
This module connects to ModuleBus backplane bus, acts as the interface gateway between DCS controller and AF100 remote I/O fieldbus. It exchanges real‑time I/O data with multiple AF100 remote stations, transmits field collected signals to the controller, and sends control output commands down to field I/O units.
It supports hot‑swap function, modules can be replaced online without stopping the DCS system. Front‑panel LED indicators show power status, bus link and fault alarm information for quick field troubleshooting. Built‑in bus diagnosis function can detect bus failure and remote station dropout, and feed back fault status to DCS controller.
Compact structure saves cabinet installation space. Conformal coated circuit board improves anti‑interference performance, adapts to complex electromagnetic environment of industrial sites.
Widely used in maintenance and renovation projects of legacy AF100 DCS system in power, chemical and papermaking industries.
It is important spare hardware for AF100 fieldbus loop debugging and defective CI627 module replacement.