ABB CI840A Communication Interface Module
Description
ABB CI840A Communication Interface Module is a high-performance fieldbus communication interface module, with part number 3BSE041882R1, that replaces the older model 3BSE022457R1 (CI840). It acts as a PROFIBUS DP-V1 slave to connect ABB AC 800M controllers or S800 I/O stations to PROFIBUS DP networks, enabling data exchange with third-party PLC, DCS, or SCADA systems.
| Specification | Value |
|---|---|
| Communication Protocol | PROFIBUS DP-V1 (Class 1 & Class 2) |
| Physical Interface | RS-485, 9-pin SUB-D |
| Communication Rate | 9.6 kbps to 12 Mbps, auto-detecting |
| Data Capacity | Max 8192 bytes in / 8192 bytes out |
| Supply Voltage | 24 VDC (19.2 to 30 V) |
| Operating Temperature | -40 to 70 degrees Celsius |
| Protection Rating | IP20 |
| Redundancy Support | Yes, requires TU846 terminal unit |
Key Features:
- Supports dual-module redundancy with millisecond-level switchover for critical processes
- Offers HART pass-through, hot-swapping, and online configuration (HCiR) for easy maintenance
- Provides electrical isolation between PROFIBUS interface and system backplane to resist interference
- Compatible with third-party masters from Siemens, Rockwell, and others
- Equipped with LED indicators for real-time status monitoring of power, communication, and faults
Applications:
- Process industries including chemical, petroleum, power, and metallurgy DCS systems
- Data exchange between ABB AC 800M controllers and third-party PLC/SCADA systems
- Distributed S800 I/O remote station communication in manufacturing, mining, and water treatment
Related Models:
- ABB CI840 (3BSE022457R1)
- ABB CI830
- ABB TU846 Redundant Terminal Unit
- ABB TU847 Non-Redundant Terminal Unit