Description
ABB CMA120 – Technical Product Description
Detailed Parameter Table
| Parameter Name | Parameter Value |
| Product Model | ABB CMA120 |
| Manufacturer | ABB |
| Product Category | Communication Interface Module |
| Compatible System | AC 800M Controller |
| Interface Type | Ethernet (10/100/1000 Mbps) |
| Protocol Support | Modbus TCP, OPC UA, IEC 61850 |
| Data Transfer Rate | Up to 1 Gbps |
| Power Supply | 24V DC (±10%) |
| Operating Temperature | -25°C to +70°C |
| Protection Rating | IP20 |
| Dimensions (W×H×D) | 45×130×115 mm |
| Redundancy Support | Yes (with CMA121) |
| Certifications | CE, UL, IEC 61131-2 |
ABB CMA120
Product Introduction
The ABB CMA120 is a high-performance Ethernet communication module designed for ABB’s AC 800M programmable automation controller. This industrial-grade module provides reliable, high-speed connectivity between controllers and field devices, supporting multiple industrial protocols including Modbus TCP, OPC UA, and IEC 61850.
Engineered for mission-critical applications, the CMA120 features deterministic communication and advanced diagnostics capabilities. Its rugged design ensures stable operation in harsh industrial environments, making it ideal for power generation, process automation, and manufacturing applications where network reliability is paramount.
Core Advantages and Technical Highlights
High-Speed Industrial Communication:
Gigabit Ethernet ports (10/100/1000 Mbps auto-negotiation)
Deterministic data exchange for real-time control
Multiple protocol support for flexible integration
Robust Industrial Design:
Wide operating temperature range (-25°C to +70°C)
Electrical isolation for noise immunity
Compact form factor for space-efficient installation
Advanced Diagnostics:
LED status indicators for quick fault identification
Built-in web server for configuration and monitoring
Comprehensive diagnostic functions for predictive maintenance
Seamless Integration:
Direct compatibility with AC 800M controller family
Hot-swappable design (with redundant configuration)
Easy configuration through ABB’s Control Builder
Typical Application Scenarios
The ABB CMA120 is extensively used in:
Power Generation:
Turbine control systems
Generator protection circuits
Substation automation
Oil & Gas:
Offshore platform control
Pipeline monitoring systems
Refinery process control
Manufacturing Automation:
Automotive production lines
Robotics control networks
Material handling systems
Water Treatment:
SCADA system integration
Pump station control
Water quality monitoring
ABB CMA120
Related Model Recommendations
ABB CMA121: Redundant Ethernet communication module
ABB CI867: PROFINET communication interface
ABB PM861AK01: Compatible processor module
ABB S800 I/O: Remote I/O system
ABB COM600: Communication gateway
ABB AC800M: Controller base unit
Installation and Commissioning
Installation Guidelines:
Mount in designated slot of AC 800M rack
Use shielded Ethernet cables for noise immunity
Maintain proper cable bend radius (>30mm)
Verify power supply specifications
Commissioning Steps:
Configure network parameters
Set up protocol-specific communication
Verify connection with field devices
Test redundancy functionality (if applicable)
Document all configuration settings
Maintenance Recommendations:
Regularly inspect network connections
Monitor communication performance
Keep firmware updated to latest version
Backup configuration files periodically
Service and Guarantee Commitment
ABB provides:
3-year standard warranty
Global technical support
Firmware update services
On-site commissioning assistance
Comprehensive documentation
The ABB CMA120 represents ABB’s commitment to reliable industrial communication, combining advanced networking capabilities with rugged industrial design for demanding automation applications.
