ABB DSAI 120 Analog Input Unit

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Product Overview

The ABB DSAI 120 is a high-performance analog input module designed for industrial automation control systems. It collects analog signals from sensors and field devices (such as current, voltage, temperature, etc.) and converts them into digital signals for controller processing. The DSAI 120 offers high accuracy, reliability, and fast response, making it a critical component in industrial process control and monitoring systems.

Detailed Specifications

• Model / Part Number: DSAI 120

• Type: Analog Input Unit

• Input Types: 4~20 mA, 0~10 V, Thermocouples, or RTD (depending on model)

• Number of Channels: 8 independent input channels

• Resolution: 16-bit

• Sampling Rate: Typical 10 ms/channel

• Input Impedance: ≥ 250 Ω (current input)

• Operating Voltage: 24 VDC

• Response Time: ≤ 10 ms

• Operating Temperature: 0°C ~ +55°C

• Storage Temperature: –20°C ~ +70°C

• Protection Class: IP20

• Mounting: DIN-rail or modular control cabinet installation

• Standards Compliance: IEC 61131, CE, UL industrial standards

Key Advantages & Features

• High-precision acquisition: 16-bit resolution ensures accurate measurements

• High reliability: Suitable for industrial environments with strong interference resistance

• Multi-function support: Compatible with multiple analog signal types

• Fast response: Low-latency acquisition suitable for real-time control

• Modular design: DIN-rail mounting allows easy maintenance and expansion

• Seamless integration with controllers: Supports ABB DCS/PLC systems

Applications

• Industrial automation control systems

• Power system monitoring and protection

• Analog signal acquisition in DCS/SCADA systems

• Factory production line equipment monitoring

• Process control in petrochemical, metallurgical, pharmaceutical, and water treatment industries

• Multi-sensor data acquisition and processing systems

Precautions

1. Ensure input signal type is compatible with the module before installation.

2. Power off before installation or maintenance to prevent module damage or electrical hazards.

3. Avoid high humidity, temperature, and corrosive environments to extend module life.

4. Regularly check the module and wiring to ensure reliable signal acquisition.

5. Do not exceed rated input range to prevent module damage.

6. Installation, commissioning, and maintenance should be performed by qualified automation or electrical personnel.

The structure and details of the product：

 

 

 

 

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