ABB DSAX452 5712289‑A S400 Analog I/O Basic Unit

Technical Specifications

Model: DSAX452

Part Number: 5712289‑A

Brand: ABB

Product Type: S400 remote analog I/O basic unit

Matching System: ABB Advant OCS DCS System, S400 I/O system

Power Supply: 24VDC

Analog Input Channels:14‑channel differential analog input

Input Signal Range: ±10V, ±20mA, 12‑bit resolution

Analog Output Channels:6‑channel analog output

Output Signal Range: ±10V, ±20mA, 10‑bit resolution

Communication: MasterFieldbus SDB bus

Isolation: Galvanic isolation between field side and system side

Installation: Rack mounting

Operating Temperature:‑10℃ ~ +60℃, non‑condensing

Protection Class: IP20

Weight:2.4kg

Dimension:229mm ×102mm ×254mm

Compatible System: Power plant, chemical, papermaking legacy Advant OCS control cabinet

Core Function: S400 distributed remote analog I/O basic unit for Advant OCS DCS system. It collects analog process signals from field transmitters, sensors, converts analog signals into digital data and uploads to DCS controller. Meanwhile converts digital control commands into analog current/voltage signals, drives valves, actuators and other field equipment, realizes field process signal acquisition and analog closed‑loop control.

Product Details

The DSAX452 5712289‑A is S400 series remote analog I/O basic unit for ABB Advant OCS DCS control system.

This module communicates with DCS controller through MasterFieldbus SDB fieldbus. It integrates 14‑way differential analog input and 6‑way analog output channels in one unit. Input channels receive pressure, temperature, flow and other analog signals from field transmitters; output channels output analog current‑voltage control signals to control valves and actuators, completing closed‑loop regulation of process parameters.

It supports module self‑diagnosis and channel fault detection. Front‑panel LED indicators display power, communication and channel status for fast on‑site troubleshooting. Field‑system galvanic isolation improves anti‑interference performance and avoids ground loop interference in industrial sites.

It belongs to legacy Advant OCS S400 hardware, mainly used for spare‑part replacement and maintenance of old DCS systems, not recommended for new‑project construction. Widely applied in overhaul and renovation projects of power, chemical and papermaking industries.

It is important spare hardware for analog signal loop debugging and defective DSAX452 unit replacement.