Switzerland ABB CMA126 Signal Converter
The ABB CMA126 is a high-precision signal converter and isolator designed to ensure accurate signal transmission between field devices and control systems. It provides galvanic isolation, signal conversion, and conditioning to improve measurement reliability in industrial automation and process control environments. Built with ABB’s proven engineering standards, the CMA126 offers excellent long-term stability, minimal signal drift, and superior electromagnetic compatibility.
| Parameter | Description |
|---|---|
| Input Signal | Analog current or voltage (configurable) |
| Output Signal | 4–20 mA / 0–10 V / other configurable options |
| Power Supply | 24 V DC (nominal) |
| Accuracy | ≤ ±0.1% of full scale |
| Isolation Voltage | Up to 2.5 kV between input, output, and power supply |
| Response Time | ≤ 10 ms |
| Operating Temperature | –25°C to +70°C |
| Mounting Type | DIN rail |
| Protection Class | IP20 |
High Signal Integrity: Provides galvanic isolation to eliminate ground loops and reduce noise interference.
Flexible Configuration: Supports multiple input and output signal formats to fit various industrial applications.
Compact Design: Slim profile suitable for dense control cabinet installations.
Easy Commissioning: LED indicators and simple terminal layout for quick wiring and status checking.
Low Power Consumption: Optimized electronics ensure energy-efficient performance.
The ABB CMA126 is housed in a durable industrial-grade enclosure featuring:
A modular body with a snap-on DIN rail mount.
Front terminals for easy wiring and maintenance.
Status LEDs to indicate power and output signal activity.
An internal PCB with precision components ensuring stable signal conversion and long-term reliability.
The CMA126 is ideal for industries requiring reliable signal processing, such as:
Process Automation Systems
Power Generation and Distribution
Chemical and Petrochemical Plants
Water and Wastewater Treatment
Machine Manufacturing and OEM Solutions
It ensures accurate data transmission between sensors, PLCs, and control systems, maintaining system safety and stability.
Installation is simple — the unit snaps directly onto a standard DIN rail, with clearly marked terminals for input, output, and power.
Before installation, verify the wiring according to the ABB wiring diagram.
Maintenance-free operation is typical, though periodic checks of terminal tightness and signal accuracy are recommended.
In case of calibration drift, the device can be reconfigured or recalibrated using ABB tools or standard adjustment interfaces.
The ABB CMA126 complies with major international safety and EMC standards, ensuring compatibility across diverse industrial environments. Its robust design, high precision, and reliability make it a preferred choice for control engineers and system integrators who require dependable signal conversion and isolation.
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