Product Short Description
Product Introduction
The ABB CMA198 is a high-performance, multi-functional programmable processor and I/O control module designed for industrial automation, power semiconductor control, and power conversion applications. It serves as a core component in ABB’s control systems, integrating a powerful processor, extensive I/O capabilities, and flexible communication interfaces to handle complex control logic, data acquisition, and device integration. The module features a modular design, supports VMEbus address configuration, and is programmable via IEC 61131-3 standard languages, making it adaptable to diverse industrial scenarios. It is specifically engineered to control power semiconductor devices such as diodes, thyristors, and silicon-controlled rectifiers (SCRs), while also providing high-precision measurement of AC grid current and voltage. The CMA198 ensures reliable operation in harsh industrial environments, delivering real-time control, comprehensive diagnostics, and seamless integration into distributed control systems (DCS), SCADA platforms, and plant automation networks.
Description
Technical Specifications
Core Processor & Memory
- Processor: 32-bit ARM Cortex-M7 processor for high-speed data processing and control logic execution
- Memory: 512 KB RAM for real-time data storage; 4 MB Flash memory for program and configuration storage
- Programming Languages: IEC 61131-3 compliant (Structured Text (ST), Ladder Diagram (LD), Function Block Diagram (FBD))
I/O Configuration
- Digital Inputs: 64 digital inputs for signal acquisition from sensors, switches, and field devices
- Digital Outputs: 64 digital outputs for controlling actuators, solenoids, and power semiconductor devices
- Output Current: Up to 10 A per output channel; supports 0–20 mA analog output signals
- Output Voltage: 24 V DC or 0–10 V DC configurable output ranges
Communication Interfaces
- Primary Interfaces: Ethernet, RS-485, and CAN bus for flexible system integration
- Supported Protocols: Modbus RTU and COMLI for reliable data exchange with PLCs, DCS, and remote devices
- Baud Rate: 9.6 kbps to 115.2 kbps (Modbus RTU)
VMEbus Configuration
- Address Space: Occupies two independent address spaces on the VMEbus (Control and Status Register, SDRAM Memory Address)
- Address Modes: Configurable for Extended Address Space (A32) or Standard Address Space (A24)
- Access Modes: Responds to supervisory, non-privileged, or both modes of access
- Address Configuration: DIP switch settings for address setup; no overlapping address configurations allowed
Electrical & Power Specifications
- Supply Voltage: 100–240 V AC / 600 V AC / 24 V DC (multi-voltage compatible)
- Power Consumption: Optimized low-power design for energy efficiency
- Isolation: Full galvanic isolation between input/output circuits and power supply
- Reverse Polarity Protection: Integrated to prevent damage from incorrect power connection
Physical & Environmental Specifications
- Dimensions: 71 mm (W) × 106 mm (H) × 126 mm (D)
- Weight: 1.15 kg
- Mounting: 35 mm DIN rail mounting or VMEbus rack mounting
- Protection Class: IP20 (cabinet-mounted installation)
- Operating Temperature: -20°C to +60°C
- Storage Temperature: -40°C to +85°C
- Relative Humidity: 5% to 95% non-condensing
- Vibration/Shock Resistance: Compliant with IEC 61131-2 industrial standards; anti-shock up to 30g, anti-vibration up to 2g (10Hz to 2kHz)
Certifications & Compliance
- Safety Certifications: CE, UL, CSA
- EMC Compliance: IEC 61000-6-2 (immunity), IEC 61000-6-4 (emission)
- RoHS/WEEE: EU RoHS 2011/65/EU; WEEE Directive 2012/19/EU compliant
Functional Features
- Powerful Processing Capability: 32-bit ARM Cortex-M7 processor enables high-speed execution of control logic, data processing, and signal analysis for complex industrial applications.
- Extensive I/O Capacity: 64 digital inputs and 64 digital outputs provide comprehensive connectivity for field devices, supporting both high-speed and standard digital signals.
- VMEbus Compatibility: Configurable VMEbus address spaces (A32/A24) allow seamless integration into VME-based industrial control systems, with flexible access mode settings.
- Programmability: Supports IEC 61131-3 standard programming languages, enabling easy customization of control logic to meet specific application requirements.
- Multi-Protocol Communication: Integrates Ethernet, RS-485, and CAN bus interfaces with Modbus RTU and COMLI protocols, ensuring flexible connectivity with diverse automation equipment.
- Power Semiconductor Control: Specialized design for controlling diodes, thyristors, and SCRs, enabling high-power device control with precision and reliability.
- AC Grid Measurement: Provides high-precision measurement of AC grid current and voltage, delivering critical data for grid monitoring and energy management.
- Modular Design: Modular architecture allows easy expansion and customization, adapting to changing application needs without full system replacement.
- Comprehensive Diagnostics: Built-in diagnostic functions monitor module health, I/O status, and communication links, providing real-time fault alerts for quick troubleshooting.
- Industrial Robustness: Engineered to withstand harsh industrial conditions, including wide temperature ranges, vibration, and humidity, ensuring long-term stable operation.
- Easy Configuration: DIP switch settings for address configuration and user-friendly programming via standard engineering tools reduce commissioning time.
Application Scenarios
- Power Conversion & Semiconductor Control: Controls diodes, thyristors, and SCRs in AC/DC motor speed control systems, power regulation systems, and servo systems, enabling precise power management.
- Industrial Automation: Integrates into manufacturing automation systems for assembly lines, material handling, and process control, handling complex I/O signals and control logic.
- Power Generation & Distribution: Monitors AC grid current and voltage in thermal, hydro, and renewable power plants; controls power conversion equipment for efficient energy distribution.
- Oil & Gas Industry: Controls pumps, compressors, and power semiconductor devices in onshore and offshore facilities, operating reliably in remote and hazardous environments.
- Chemical & Petrochemical Processing: Manages process control systems, including reactor control and safety systems, integrating with DCS and SCADA platforms for centralized monitoring.
- Metals & Mining: Controls mineral processing equipment, conveyors, and power systems in rugged mining environments, withstanding extreme conditions and high vibration.
- Water & Wastewater Treatment: Monitors and controls pump stations, filtration systems, and treatment processes, ensuring efficient water management and compliance with environmental standards.
- Pharmaceutical & Food Processing: Supports GMP-compliant process control, handling I/O signals for sterile production lines and batch manufacturing.
- Marine & Offshore: Controls shipboard power systems, propulsion equipment, and auxiliary devices, complying with marine safety and environmental standards.
- Building Automation & Energy Management: Integrates with HVAC, lighting, and energy monitoring systems, providing precise control and data acquisition for energy efficiency.






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