DSAI146 3BSE007949R1 Analog Input Unit

Overview

Place of Origin:	Sweden
Brand Name:	ABB
Model Number:	DSAI146 3BSE007949R1
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Specifications

Description

The DSAI146 3BSE007949R1 ABB analog input unit is a high-quality product from ABB, renowned in the industry for its durability and reliability. It is well-designed and easy to install and use. The DSAI146 3BSE007949R1 analog input unit features four analog input channels, each with individual overload protection and fault diagnosis. The module supports smart sensors via the HART protocol.

Applications

Large thermal power plants (boiler/superheater monitoring):

Used to monitor the thermocouple temperatures of boiler tube walls, furnace, and various sections of the turbine. The high-density 32-channel design allows for centralized monitoring of the temperature distribution across the entire boiler wall on a single board.

Petrochemical and large-scale oil refineries (incinerators/reactors):

Monitoring extremely high-temperature processes. Thermocouple signals are extremely weak; the DSAI146's high common-mode rejection ratio effectively filters electromagnetic noise generated by inverters and large motors.

Steel and large-scale metallurgical plants (blast furnace/heating furnace):

Monitoring furnace temperature in dusty, high-temperature environments. Its robust industrial design ensures accurate transmission of thermocouple data even in harsh environments.

Glass and ceramic manufacturing plants:

Precise control of furnace temperature. Even minute deviations in temperature can lead to a decrease in glass quality; this module provides the necessary precision.

Features

High Precision: Employs a high-precision ADC to ensure accurate and reliable measurement results.

High Reliability: Uses industrial-grade components, adaptable to harsh industrial environments.

Modular Design: Facilitates installation and maintenance.

Multiple Signal Type Support: Supports various analog signal types, such as voltage and current.

Digital Filtering: Reduces noise interference and improves measurement accuracy.

Diagnostic Function: Provides self-diagnostic capabilities for easy fault diagnosis.

FAQ

Q1: What's the difference between DSAI146 3BSE007949R1 and DSAI145?
A: The channel density is different. DSAI146 3BSE007949R1 supports up to 32 inputs, while DSAI145 typically has 16. DSAI146 is more suitable for factory environments with extremely dense signals.

Q2: Can DSAI146 3BSE007949R1 directly connect to a 4-20mA transmitter signal?
A: No, it cannot be directly connected. It's a millivolt-level input module. For 4-20mA connections, you need to select DSAI110/130.

Q3: Does DSAI146 3BSE007949R1 support PT100 RTDs?
A: No. RTDs require a constant current source drive; you should use the dedicated DSAI155 module.

Q4: Why are all channels reporting "fault" after replacing the DSAI146 3BSE007949R1?
A: Check that the hardware jumpers and address codes of the new module are completely consistent with the old card, and confirm that the software configuration (DB Element) matches.

Q5: Can its 32 channels be mixed with different types of thermocouples about DSAI146 3BSE007949R1?
A: Usually, they need to be configured in groups. If mixing is required, confirm the hardware grouping support and correctly define the sensor type for each channel in the software.