Description
Product Description
The ABB DSDX 452 is a digital basic I/O unit from the ABB Advant Master S400 I/O family. It is designed for industrial automation, process control, and distributed I/O applications that require digital signal acquisition and relay-based output control. The module provides 20 digital inputs for 24 VDC signals and 12 digital relay outputs. As a basic unit, it communicates with the ABB MasterFieldbus SDB and can be expanded with a compatible DSDX 451 expansion unit. The DSDX 452 includes channel-status indicators, power-supply monitoring, communication monitoring, and self-test functions.
The unit is intended to operate as part of an ABB S400 I/O station rather than as a standalone PLC. It uses detachable screw-terminal connections and can be mounted on a panel, mounting plate, or DIN rail within a suitable enclosure. ABB documentation identifies the DSDX 452 as a legacy S400 I/O product, with S800 I/O evolution solutions available for modernization projects.
DSDX 452
Product Parameters
| Parameter | Specification |
|---|---|
| Brand | ABB |
| Model | DSDX 452 |
| Product Type | Digital Basic I/O Unit |
| Product Family | Advant Master S400 I/O |
| Digital Inputs | 20 channels |
| Input Voltage | 24 VDC |
| Digital Outputs | 12 channels |
| Output Type | Relay output |
| Communication | MasterFieldbus SDB |
| Expansion Capability | Compatible with DSDX 451 expansion unit |
| Monitoring | Power loss, communication monitoring, and startup self-test |
| Indicators | Operation, power supply, transducer supply, and channel status |
| Connection | Detachable screw terminals |
| Mounting | Panel, mounting plate, or DIN rail |
| Approx. Dimensions | 237 mm × 192 mm, based on documented S400 outline information |
| Enclosure Rating | IP20 |
| Application | Industrial process control, automation, and remote I/O |
| Condition | Verify actual listing condition before purchase |
| Discontinued Status | Legacy S400 I/O hardware; modernization options exist |
FAQ
Q: What is the ABB DSDX 452?
A: It is a digital basic I/O unit used in the ABB Advant Master S400 automation system.
Q: How many inputs and outputs does it have?
A: The DSDX 452 provides 20 digital inputs and 12 relay outputs.
Q: What input voltage does it use?
A: The digital inputs are designed for 24 VDC signals.
Q: Does the DSDX 452 support expansion?
A: Yes. It can be expanded with a compatible DSDX 451 digital expansion unit.
Q: What communication system does it use?
A: The unit communicates through ABB MasterFieldbus SDB.
Q: Is the DSDX 452 part of the ABB S800 I/O family?
A: No. It belongs to the older S400 I/O family. ABB provides S800 I/O evolution solutions designed to support modernization of S400 installations.
Recommended Related ABB Models
- DSDX 451 — Digital I/O Expansion Unit
- DSDX 452L — Digital Basic Unit with Low-Level Relay Outputs
- DSDX 453 — 48 VDC Digital Expansion Unit
- DSDX 454 — 48 VDC Digital Basic I/O Unit
- DSDI 452 — 32-Channel Digital Input Basic Unit
- DSDI 451 — 32-Channel Digital Input Expansion Unit
- DSAX 452 — Analog Input/Output Basic Unit
- DSDX 454L — 48 VDC Digital Unit with Low-Level Relay Outputs
- DI810 — S800 Digital Input Module
- DO810 — S800 Digital Output Module
Before installation, verify the complete type designation, input voltage, relay-output requirements, field-terminal arrangement, MasterFieldbus configuration, compatible expansion unit, and the installed Advant Master controller version. The DSDX 452 should be replaced only with hardware confirmed to match the existing S400 I/O configuration.
