Description
Detailed Parameter Table
| Parameter Name | Parameter Value |
| Product Model | ABB CI840A |
| Manufacturer | ABB |
| Product Category | PROFIBUS Communication Interface |
| Communication Protocol | PROFIBUS DP/V1 |
| Data Transfer Rate | 9.6 kbps – 12 Mbps |
| Interface Type | Electrical (RS-485) |
| Number of Connections | 1 (with terminal block) |
| Power Supply | 5V DC (from backplane) |
| Power Consumption | 1.5W typical |
| Operating Temperature | 0°C to +55°C |
| Protection Rating | IP20 |
| Dimensions (W×H×D) | 45×127×119 mm |
| Certifications | CE, UL, cUL |
ABB CI840A
Product Introduction
The ABB CI840A is a high-performance PROFIBUS DP/V1 communication interface module designed for ABB’s AC 800M controller family. This essential component enables seamless integration of ABB control systems with PROFIBUS DP networks, supporting both cyclic data exchange and acyclic communication services (V1 functionality).
As part of ABB’s extensive industrial automation portfolio, the ABB CI840A provides reliable, real-time communication between controllers and field devices such as drives, I/O systems, and sensors. Its robust design ensures stable operation in demanding industrial environments while maintaining compatibility with the PROFIBUS DP standard (EN 50170).
Core Advantages and Technical Highlights
- High-Speed Industrial Communication:
Supports PROFIBUS DP/V1 at speeds up to 12 Mbps
Enables both cyclic process data exchange and acyclic parameterization
Automatic baud rate detection for easy commissioning
- Reliable Performance in Harsh Conditions:
Operates in 0°C to +55°C temperature range
Electrically isolated RS-485 interface (1500V AC)
Diagnostic LEDs for quick status monitoring
- Seamless System Integration:
Plug-and-play installation in AC 800M controller racks
Supports DP-V1 functionality for enhanced device parameterization
Compatible with ABB’s Control Builder engineering tool
- Advanced Diagnostics:
Comprehensive PROFIBUS diagnostic capabilities
Supports DP-V1 alarms for enhanced system monitoring
GSD file available for easy configuration in PROFIBUS networks
ABB CI840A
Typical Application Scenarios
The ABB CI840A is widely used in:
Process Industries: Chemical plants, oil refineries
Power Generation: Turbine control systems
Manufacturing: Automotive production lines
Water Treatment: Pump control and monitoring
Mining: Conveyor belt control systems
In these applications, the module provides deterministic, real-time communication between control systems and field devices, enabling efficient automation and process control.
Related Model Recommendations
ABB CI854 – PROFIBUS DP communication module
ABB CI867 – Ethernet/IP interface module
ABB CI871 – PROFINET IO controller module
ABB CI858 – IEC 61850 communication module
ABB CI801 – Serial communication module
Installation and Commissioning
Installation Preparation:
Mount in AC 800M controller rack
Ensure proper PROFIBUS cable termination
Verify GSD file is installed in engineering tool
Commissioning Steps:
Set PROFIBUS address via Control Builder
Configure DP parameters (baud rate, watchdog time)
Perform bus parameterization
Verify communication status LEDs
Maintenance Suggestions:
Regularly check connection integrity
Monitor PROFIBUS diagnostic data
Keep firmware updated via Control Builder
Service and Warranty
ABB provides:
36-month standard warranty
Global technical support network
Firmware updates through Control Builder
On-site commissioning assistance (optional)
For critical applications, extended warranty options and premium support packages are available.
Conclusion
The ABB CI840A PROFIBUS DP/V1 communication interface delivers reliable, high-performance industrial networking for ABB’s AC 800M control systems. With its robust design, advanced diagnostics, and seamless integration capabilities, it serves as a critical component in modern automation architectures across various industries.
