ABB CI627A PROFIBUS DP Master Communication Interface Module

The ABB CI627A is a PROFIBUS DP master communication interface module for ABB AC800M Control IT DCS system. It establishes high‑speed deterministic bus communication between the controller and field DP slave devices, realizing cyclic real‑time data exchange for distributed process control.

This plug‑in rack module supports PROFIBUS DP V1 protocol and provides comprehensive network diagnosis and LED status indication. Original production has been discontinued. It is widely stocked as aftermarket spare parts for power, petrochemical and pulp & paper DCS maintenance and system retrofitting.

Main Specifications

1. Brand: ABB; Model:CI627A; Type:PROFIBUS DP Master Communication Module
2. Applicable System:AC800M Control IT DCS, compatible with S800 I/O and DP field slaves
3. Communication Standard:PROFIBUS‑DP V1, maximum baud rate up to 12 Mbit/s
4. Connector:9‑pin D‑SUB, built‑in bus termination resistor, electrical isolation design
5. Configuration Tool:Control Builder M software for parameter setting and network diagnosis
6. Operating Temperature:‑20℃ ~ +60℃, plug‑in backplane installation
7. Supply Status:Original production discontinued, available as tested surplus or refurbished spare parts

Core Functions

1. Act as PROFIBUS DP master to manage all slave nodes and execute periodic real‑time data communication.
2. Transmit process measurement signals from field I/O modules to AC800M controller via DP bus.
3. Send control commands from the main controller to field actuators, drives and remote I/O stations.
4. Support acyclic data exchange for slave parameter download, upload and advanced diagnosis.
5. Onboard LED indicators display power, running and network fault status for rapid troubleshooting.
6. Work as a key bus gateway connecting the DCS controller and distributed PROFIBUS field equipment.

Application Scenarios

1. Distributed automation control for thermal power, petrochemical, water treatment and papermaking plants.
2. Spare communication module replacement and routine maintenance of existing ABB AC800M DCS racks.
3. Technical renovation and communication reliability upgrade of legacy PROFIBUS‑based control cabinets.
4. On‑site troubleshooting and replacement of failed DP master modules on running production control systems.
5. Spare‑parts stocking for system integrators and DCS automation maintenance contractors.
6. Global aftermarket spare supply for technicians maintaining obsolete ABB Control IT DCS hardware.

FAQ

1. Q:Which ABB DCS platform is CI627A designed for?
   A:It is a dedicated PROFIBUS‑DP master module for ABB AC800M Control IT system.
2. Q:What role does CI627A play on PROFIBUS network?
   A:It serves as bus master, polling and communicating with all PROFIBUS‑DP slave devices.

3. Q:Is this communication module still in original production?
   A:ABB has stopped manufacturing this model, only tested surplus and refurbished spare units are available.