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- CMA126/CMA 126
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- Sweden
- 135 × 50 × 110 mm
- 0.98kg
- 3DDE300406/3DDE 300 406
- Xiamen, China
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Product Technical Profile – ABB CMA126 / CMA 126 (3DDE300406)
1) Brand and Series Overview
Brand: ABB
Series: CMA Series – Control & Measurement Modules
The CMA series is a versatile family of compact control and measurement modules designed for industrial automation systems. It provides digital and analog signal acquisition, control, and processing capabilities. Modules in this series are engineered for distributed control architectures, PLC integration, and SCADA systems, offering high reliability in industrial environments.
The CMA126 is part of the digital I/O high-speed modules within the CMA series, optimized for rapid signal processing and robust operation.
2) Product Overview
The ABB CMA126 (3DDE300406) is a high-performance digital input/output module tailored for industrial automation applications requiring fast response times. It captures discrete signals from sensors and switches, processes them, and provides reliable output control for actuators, relays, or machinery systems.
It is engineered for high-speed applications where timing accuracy, signal integrity, and noise immunity are critical, such as in distributed control systems or automated production lines.
3) Technical Parameters
| Parameter | Specification |
|---|---|
| Model | CMA126 / CMA 126 (3DDE300406) |
| Product Type | High-Speed Digital I/O Module |
| Series | CMA Control & Measurement Modules |
| Digital Inputs | 16 discrete channels |
| Digital Outputs | 16 discrete channels |
| Input Voltage | 24 V DC |
| Power Consumption | ≤ 9 W |
| Communication | PLC Interface / Control Bus |
| Mounting | DIN Rail (35 mm) / Panel Mount |
| Operating Temperature | -20 °C to +60 °C |
| Storage Temperature | -40 °C to +85 °C |
| Relative Humidity | 5–95 % non-condensing |
| Protection Rating | IP20 |
| Terminal Connection | Screw terminals |
| Dimensions (H × W × D) | 135 × 50 × 110 mm |
| Weight (kg) | 0.98 kg |
| Housing Material | Flame-retardant industrial polymer |
4) Product Description
The CMA126 module is designed to manage high-speed digital signals in industrial automation. It receives discrete input signals, performs real-time processing, and delivers reliable output for machinery or control systems.
Its compact design allows for integration into distributed I/O racks or PLC cabinets, ensuring minimal footprint while maintaining high signal integrity. The module is suitable for applications that require precise timing, such as conveyor systems, safety interlocks, or automated machine control.
5) Key Advantages
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High-Speed Signal Processing: Handles fast digital signals with minimal latency.
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Robust Industrial Design: Tolerates vibration, electrical noise, and temperature variations.
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Modular Installation: Compact DIN rail or panel mounting.
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Enhanced Signal Integrity: Prevents false triggers caused by electrical interference.
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PLC and SCADA Compatibility: Easily integrates into control and monitoring systems.
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Energy Efficient: Low power consumption, ≤ 9 W.
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Wide Environmental Range: Operates reliably in varied temperature and humidity.
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Maintenance Friendly: Screw terminal connections allow rapid installation and servicing.
6) Typical Applications
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High-speed digital monitoring and control for industrial machinery
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Distributed I/O in PLC panels and automation cabinets
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Safety interlock and emergency stop signal processing
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Fast signal acquisition for conveyor systems and robotic automation
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Digital signal processing for alarms and event notifications
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Actuator and relay control in production lines
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Integration into SCADA for remote monitoring
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Automation of repetitive or high-speed machine processes
7) Five Related Models (CMA Series)
| Model | Function / Feature | Dimensions (mm) | Weight (kg) |
|---|---|---|---|
| CMA121 | Mixed signal I/O module | 130 × 50 × 105 | 0.88 |
| CMA122 | Analog/Digital measurement | 130 × 50 × 105 | 0.90 |
| CMA123 | Digital I/O module | 130 × 50 × 105 | 0.94 |
| CMA124 | High-speed digital I/O | 135 × 50 × 110 | 0.95 |
| CMA125 | Enhanced high-speed digital I/O | 135 × 50 × 110 | 0.97 |
8) Five Popular ABB Models (Industrial Portfolio)
| Model | Product Type | Primary Feature / Rating | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|
| ACS580‑01‑12A6‑4 | Variable Frequency Drive | 5.5 kW | 358 × 152 × 203 | 6.5 |
| ACS880‑01‑017A‑4 | Drive Inverter | 17 kW | 220 × 120 × 180 | 3.6 |
| Emax 2 E2.2 | Air Circuit Breaker | 1600 A | 371 × 210 × 268 | 8.2 |
| Tmax XT4N | Molded Case Circuit Breaker | 250 A | 140 × 105 × 160 | 2.1 |
| AF16‑30‑10 | Contactor | 16 A | 90 × 55 × 78 | 0.42 |
9) Frequently Asked Questions (FAQ)
Q1: What is the main function of CMA126?
A1: To acquire and output high-speed digital signals for industrial automation systems.
Q2: How many digital inputs and outputs does it provide?
A2: 16 inputs and 16 outputs.
Q3: What is the operating voltage for the module?
A3: 24 V DC.
Q4: Can it be mounted on a DIN rail?
A4: Yes, it supports 35 mm DIN rail and panel mounting.
Q5: In which environments can CMA126 be used?
A5: Industrial environments with vibration, electrical noise, and temperatures between -20 °C and +60 °C.
Q6: Does the module prevent false triggering from electrical interference?
A6: Yes, it includes signal conditioning for robust operation.
Q7: What are the physical dimensions and weight of the module?
A7: 135 × 50 × 110 mm; 0.98 kg.
Q8: What type of terminals does it use for wiring?
A8: Screw terminals for secure and serviceable connections.
Q9: Is the CMA126 suitable for safety interlock applications?
A9: Yes, it can process fast emergency stop and safety signals.
Q10: What is the main advantage over previous CMA modules?
A10: Enhanced high-speed digital I/O processing with robust industrial design and higher reliability.