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ABB DSAI146 3BSE007949R1 Product Introduction

Nov 29, 2025 ABB

ABB DSAI146 3BSE007949R1 is an industrial grade analog input unit developed by ABB,specifically designed for high-precision temperature measurement and multi signal type acquisition.This module supports various input signals such as Pt100 sensors,voltage,current,and resistance,and has functions such as optoelectronic isolation protection,EtherCAT bus communication,and programmable parameter setting.It is widely used in automation control systems in manufacturing,chemical,power,energy management,and other fields.

ABB DSAI146 3BSE007949R1

technical specifications

Parameter description

Model ABB DSAI146 3BSE007949R1

Product type:Analog input module

Number of input channels:4 independent channels

Working voltage 24-50 VDC(supports redundant configuration)

Temperature measurement range-200°C to+850°C(compatible with Pt100 sensor)

Accuracy and Resolution:±0.1°C accuracy,0.01°C resolution

Communication protocols EtherCAT(COE protocol),HART protocol

Protection level IP65(dustproof and waterproof)

Working temperature-30°C to+65°C

Environmental humidity of 95%without condensation

Dimensions 324mm(length)x 234mm(width)x 22.5mm(height)

Weight 0.4 kilograms

Main features and advantages

High precision and multi signal compatibility

Support Pt100 temperature sensor,voltage(0-10V),current(4-20mA),and resistance signal input to meet the needs of different industrial scenarios.

Adopting 32-bit DSP technology,ensuring signal acquisition accuracy of±0.1°C and resolution of 0.01°C,suitable for precision control scenarios.

Anti interference and safety

4-channel optoelectronic isolation input interface,compatible with 5-24V logic signals,effectively suppressing electromagnetic interference.

Built in overvoltage,undervoltage,and overcurrent protection functions ensure the safe operation of the equipment.

Flexible communication and integration capabilities

Supports EtherCAT bus protocol and can be used as a standard slave device,seamlessly integrated with mainstream master controllers such as Siemens and Rockwell.

The HART protocol supports intelligent sensor configuration and fault diagnosis,improving system maintenance efficiency.

Industrial grade reliability design

Protection level IP65,suitable for harsh environments such as high temperature,high humidity,and high dust.

The modular structure supports quick replacement and reduces downtime.

ABB DSAI146 3BSE007949R1

application area

Industrial automation:CNC machine tools,robot motion control,production line temperature monitoring.

Energy and Power:Temperature Monitoring of Power Plant Boilers,Status Collection of Substation Equipment.

Chemical and water treatment:temperature control of reaction vessels,conversion of pipeline pressure and flow signals.

Transportation:status monitoring of rail transit equipment,new energy vehicle battery management system.

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