Description

ABB CMA121 3DDE300401

ABB CMA121 3DDE300401 is an integrated module combining a power measurement card and DC power supply. It is designed as a dual‑function unit for power measurement and stable DC power supply in industrial automation systems, featuring precise power detection, DC power regulation, data communication, and fault protection. As an important supporting component of mainstream automation platforms such as ABB Symphony Plus and 800xA, it is widely used in industrial automation, power systems, precision electronic equipment, and other applications. It provides regulated and filtered stable DC voltage for system equipment while accurately collecting power parameters, with high reliability, high efficiency, and strong environmental adaptability.

This module is manufactured in Switzerland and is available from stock. It mainly performs core tasks including power measurement, DC power output, parameter monitoring, fault protection, and data interaction. Compatible with automation platforms such as ABB Symphony Plus and 800xA, it can seamlessly integrate with various industrial sensors, actuators, PLCs, precision electronic circuits, and host monitoring systems. It complies with international industrial standards, ensuring versatility and operational reliability across different scenarios and devices.

It features a compact industrial‑grade design suitable for harsh industrial environments. The installation conforms to industrial equipment standards with convenient wiring and small space occupation, allowing flexible integration into various automation equipment cabinets.

1. Technical Specifications

Power Specifications
Input voltage range: 85–265 VAC, compatible with standard industrial AC power supplies, tolerant to voltage fluctuations, and adaptable to power supply requirements in different scenarios.
Output voltage: fixed 24 VDC, output current up to 121 A, providing sufficient and stable DC power for electronic circuits and industrial equipment.
Conversion efficiency: up to 94%, low power consumption effectively reduces overall system operating costs.
Built‑in power factor correction optimizes power quality and reduces energy loss.
Comprehensive power protection: supports over‑voltage, over‑current, and short‑circuit protection, effectively preventing damage to the module and subsequent equipment caused by abnormal power supply and ensuring continuous and stable system operation.
Environmental Specifications
Operating temperature: -40°C to +70°C, suitable for harsh conditions such as extremely cold outdoors and high‑temperature industrial workshops, stably withstanding on‑site temperature fluctuations.
Storage temperature range supports long‑term storage of industrial equipment, facilitating spare parts storage and replacement.
Protection class complies with industrial standards, providing good dust resistance and anti‑interference performance against industrial dust and electromagnetic interference.
Optimized thermal design ensures stable heat dissipation even under high load, avoiding overheating failures and extending service life.
Measurement & Communication Specifications
As a power measurement card, it provides high‑precision power measurement, enabling real‑time acquisition of circuit power parameters with accurate measurement and fast response, supporting reliable data for system energy consumption monitoring and optimization.
Integrated standard industrial communication interfaces allow data exchange with host monitoring systems (e.g., SCADA, 800xA platform), uploading power measurement data, power supply operating parameters, and fault information in real time, supporting remote monitoring and parameter query.
Data transmission is stable, reliable, and low‑latency, meeting real‑time monitoring requirements in industrial scenarios.
Parameter calibration function is available to adjust measurement accuracy as needed, ensuring data accuracy.
Other Key Parameters
Installation: compatible with standard industrial cabinets, enabling flexible integration into existing automation systems with simple and standardized wiring for easy installation and maintenance.
Robust structure with vibration and shock resistance complying with industrial equipment standards, ensuring stable operation in complex industrial environments.
Fault self‑diagnosis function monitors operating status in real time. In case of over‑voltage, over‑current, short‑circuit, or other abnormalities, it quickly triggers protection and alarm signals, helping maintenance personnel locate faults rapidly and reduce downtime.

2. Features

High Reliability & High Efficiency
Industrial‑grade high‑quality components and optimized circuit design ensure strong overall stability and extremely high Mean Time Between Failures (MTBF) for continuous stable operation in complex industrial conditions.
Conversion efficiency up to 94% with built‑in power factor correction effectively improves energy utilization and reduces power consumption, suitable for long‑term continuous operation.
Comprehensive over‑voltage, over‑current, and short‑circuit protection further enhances operational safety and prevents equipment damage.
Integrated Power Measurement & DC Power Supply
Combines power measurement and DC power supply in one unit, eliminating the need for additional measuring devices or power modules, simplifying system architecture and reducing integration costs.
High‑precision power measurement provides real‑time circuit power data for energy consumption analysis and optimization.
Stable, regulated, and filtered 24 VDC output can directly supply electronic circuits, industrial actuators, and other equipment, ensuring stable operation of downstream devices.
Strong Communication & System Integration
Supports seamless integration with mainstream automation platforms including ABB Symphony Plus and 800xA. Standard communication interfaces enable data exchange with host monitoring systems, PLCs, sensors, and other devices.
Real‑time upload of power measurement data, power supply status, and fault information supports remote monitoring, parameter query, and fault diagnosis, simplifying operation and maintenance and improving efficiency.
Compatible with various industrial equipment and adaptable to automation systems of different scales.
Wide Environmental Adaptability
Operating temperature from -40°C to +70°C suits extreme cold and high‑temperature industrial environments without additional temperature control equipment, reducing operating costs.
Excellent vibration, shock, and electromagnetic interference resistance ensures stable operation in dusty and high‑interference industrial sites, meeting requirements in power, industrial automation, and other fields.
Easy Installation & Maintenance
Standardized design for industrial cabinets with simple wiring enables quick installation and integration.
Fault self‑diagnosis and alarm functions provide clear fault information, allowing quick troubleshooting without specialized tools.
Compact size saves cabinet space and facilitates installation, maintenance, and replacement.

3. Applications & Case Examples

Industrial Automation Production Lines
Used as the core power measurement and DC supply module in automotive, electronics, and other automated production lines, providing stable 24 VDC power for PLCs, sensors, actuators, etc. It measures power consumption in real time and uploads data to the host monitoring system, supporting energy optimization and equipment maintenance to ensure continuous and stable production.
Power System Monitoring
Applied in substations, distribution rooms, and other power scenarios to monitor power parameters of various electrical equipment. It collects power data and uploads it to the power monitoring system while supplying stable DC power to monitoring and protection devices, supporting accurate monitoring, energy management, safe operation, and timely anomaly detection.
Power Supply & Monitoring for Precision Electronic Equipment
Provides regulated and filtered 24 VDC power for precision electronic circuits and testing equipment in precision instrument and electronics workshops, avoiding voltage fluctuation damage. It measures operating power for performance testing and energy control, ensuring stable operation of precision equipment.
Smart Manufacturing & Industrial IoT
Integrated into intelligent equipment cabinets in smart factories and IIoT systems to supply stable power while collecting power data for real‑time energy monitoring and remote management, supporting energy saving, intelligent operation, and productivity improvement.

4. Product Advantages

Integrated design reduces integration costs: Combines power measurement and DC power supply, eliminating extra equipment, simplifying architecture, and lowering investment and installation expenses.
High efficiency & energy saving: Up to 94% conversion efficiency and power factor correction improve energy utilization and reduce long‑term operating costs.
High reliability & safety: Industrial components, complete protection, and optimized circuits ensure long‑term stable operation and prevent equipment damage.
Wide compatibility & easy maintenance: Adaptable to multiple automation platforms and environments. Self‑diagnosis and remote monitoring simplify O&M and reduce workload and costs.