Brief Introduction to ABB DASD147 3ASC25H280 I/O Module

Name: DASD 147 | ABB | 3ASC25H280 (I/O) modules
SKU: 19677
Price: 1688.00 USD
Availability: InStock

In industrial automation systems—such as power plant control rooms, metallurgical production lines, and smart manufacturing workshops—input/output (I/O) modules act as the “bridge” between field equipment and controllers. The ABB DASD147 3ASC25H280 is a high-performance digital I/O module designed for harsh industrial environments, ensuring stable data transmission between sensors, actuators, and control systems to keep production running smoothly.

1. Product Overview

The ABB DASD147 3ASC25H280 is a industrial-grade digital input/output (I/O) module, belonging to ABB’s well-known Advant OCS product series. It is specially developed for medium and large industrial automation systems, and is widely used in power generation, metallurgy, chemical industry, and other fields that require high reliability of data transmission. Different from ordinary I/O modules, it adopts reinforced anti-interference design and modular structure, which can adapt to the harsh working conditions of high temperature, high humidity, and strong electromagnetic interference on industrial sites.

Its core advantages lie in “high integration + strong stability”. The module integrates 16 digital input channels and 16 digital output channels, realizing the dual functions of data collection and control command execution, which reduces the number of modules used in the system and saves cabinet space. The built-in optical isolation circuit can effectively isolate the interference of on-site strong electricity to the control system, ensuring that the data transmission error rate is lower than 10^-9. For example, in a thermal power plant’s boiler control system, the DASD147 3ASC25H280 can accurately collect the on-off status of dozens of valves, and quickly execute the opening and closing commands sent by the controller, even in the environment of strong electromagnetic interference from the generator set, it can still maintain stable operation.

It also has excellent maintainability. The front panel is equipped with clear status indicator lights, which can visually display the power supply, communication, and channel working status of the module. Maintenance personnel can quickly locate faults without professional testing equipment. The hot-swappable design allows the module to be replaced online without shutting down the entire system, minimizing production interruption time. In addition, it supports ABB’s standard PROFIbus-DP communication protocol, which can be seamlessly connected with ABB’s AC800M, Advant Controller 400 series controllers, and is also compatible with mainstream industrial controllers of other brands.

2. Technical Specifications

The DASD147 3ASC25H280 focuses on practicality and reliability, and its technical parameters are fully adapted to the needs of industrial on-site applications:

Module Type: Digital input/output (I/O) combined module—integrates input and output functions
Channel Configuration: 16 digital input channels + 16 digital output channels—dual-function integration
Input Signal: DC 24V, dry contact/PNP input—compatible with common on-site sensors
Output Signal: DC 24V, relay output, each channel 2A—supports direct control of small actuators
Communication Protocol: PROFIbus-DP V1, baud rate up to 12Mbps—fast and stable data transmission
Power Supply: DC 24V (18–32V DC), redundant power supply support—anti-power failure design
Operating Temperature: -25°C to +70°C—adapts to most industrial on-site environments
Dimensions: 100mm × 160mm × 220mm (rail-mounted)—fits standard DIN rail installation
Isolation Performance: Channel-to-channel isolation 2.5kVrms, signal-to-ground isolation 5kVrms—strong anti-interference
Protection Level: IP20 (module body), IP40 (with protective cover)—suitable for cabinet installation

3. System Integration & Application

The DASD147 3ASC25H280 is a key component of ABB’s “Integrated Industrial Automation System”. This system is composed of ABB controllers (such as AC800M), DASD series I/O modules, HMI operation interfaces, and configuration software (such as 800xA). It realizes the full-process automation of “data collection – logic calculation – control execution – status monitoring”, and is widely used in the core control links of various industries.

Take the control system of a large iron and steel enterprise’s continuous casting machine as an example to understand its application process:

On the continuous casting machine production line, dozens of proximity sensors and limit switches collect the position of the crystallizer, the opening status of the water spray valve, and the conveying status of the billet in real time, and transmit the signals to the 16 input channels of the DASD147 3ASC25H280.
The DASD147 3ASC25H280 processes the collected digital signals, converts them into standard communication signals, and transmits them to the ABB AC800M controller through the PROFIbus-DP bus.
The AC800M controller performs logic calculations according to the preset process parameters. When it is judged that the crystallizer needs to be cooled, it sends a control command to the DASD147 3ASC25H280, and the module drives the water spray valve to open through the output channel.
During the whole process, the working status of each channel of the DASD147 3ASC25H280 (such as whether the input signal is normal, whether the output is executed) is displayed in real time on the 800xA configuration software. If a channel fails, the system will immediately send an alarm and automatically switch to the standby module to ensure the continuous operation of the continuous casting machine.

This system has won the trust of industrial users around the world due to its high stability, strong compatibility, and easy maintenance. The DASD147 3ASC25H280, as a cost-effective product in the series, not only meets the basic automation needs but also supports system expansion. By cascading multiple modules, it can adapt to the control requirements of larger production lines, and the expansion cost is far lower than replacing the whole set of equipment.

4. Recommended ICS TRIPLEX Related Models

ABB has a complete I/O module product matrix to meet the different functional requirements of industrial automation systems. Here are the most practical related models for various scenarios:

ABB DASD148 3ASC25H281: Enhanced version of DASD147—32 input + 32 output channels, suitable for large-scale I/O nodes (e.g., chemical plant reaction workshops)
ABB DASI140 3ASC25H270: Pure digital input module—32 channels, for scenarios requiring a large number of signal collection (e.g., power plant auxiliary equipment monitoring)
ABB DASO140 3ASC25H271: Pure digital output module—32 channels, for scenarios requiring a large number of control commands (e.g., automated warehouse conveyor control)
ABB DAAD103 3ASC25H290: Analog input module—16 channels, 4–20mA signal, for collecting continuous parameters (e.g., temperature, pressure, flow)
ABB DA AO103 3ASC25H291: Analog output module—16 channels, 4–20mA signal, for controlling regulating valves and frequency converters (e.g., water treatment plant dosing system)
ABB DASD147-EX 3ASC25H280EX: Explosion-proof variant—ATEX Zone 2 certified, for hazardous areas (e.g., oil refinery storage tank area)
ABB DASD150 3ASC25H285: Ethernet-compatible model—supports Modbus TCP, for intelligent workshops with Ethernet architecture (e.g., new energy battery assembly lines)
ABB DAHD101 3ASC25H300: High-speed digital input module—response time ≤1ms, for high-speed detection scenarios (e.g., textile machinery yarn breakage detection)
ABB DASD146 3ASC25H279: Compact version of DASD147—8 input + 8 output channels, suitable for small I/O nodes (e.g., laboratory equipment automation)
ABB DAIM101 3ASC25H310: Mixed analog-digital module—8 analog input + 8 digital I/O channels, for integrated monitoring scenarios (e.g., food packaging line quality inspection) View more.