ABB DX561 Digital Input/Output Module

Product Description

The DX561 is a compact mixed digital I/O module from ABB, developed for the S500-eCo distributed I/O platform. Unlike traditional Advant Controller 400 DX-series input cards, this model combines digital inputs and digital outputs within a single module, making it suitable for space-efficient cabinet designs and decentralized control architectures.

Designed for 24 VDC control systems, the DX561 supports reliable acquisition of field signals as well as direct control of loads such as relays, solenoid valves, and indicators. Its transistor-based outputs, galvanic isolation, and deterministic response characteristics make it appropriate for continuous industrial operation.

Key Functional Overview

The DX561 integrates eight digital input channels and eight digital output channels in a single housing. Inputs are configurable for sink or source wiring, while outputs are short-circuit protected transistor channels rated for direct field actuation. Integrated diagnostics and channel status LEDs provide immediate feedback during commissioning and maintenance.

This module is engineered for panel-mounted distributed I/O systems where reliability, predictable timing, and electrical robustness are required.

Technical Specifications

Digital Inputs

• Channels: 8

• Nominal Input Voltage: 24 VDC

• Operating Voltage Range: 0 … 30 VDC

• Input Current: Approx. 5 mA per channel

• Input Type: Sink or source (wiring dependent)

• Signal Delay Time: 8 ms (typical)

• Isolation: Group isolation between field and system bus

Digital Outputs

• Channels: 8

• Output Type: Transistor

• Nominal Output Voltage: 24 VDC

• Output Voltage Range: 20.4 … 28.8 VDC

• Maximum Output Current: 0.5 A per channel

• Load Connection: 1-wire switching

• Protection: Electronic short-circuit and overload protection

Power Supply

• Rated Supply Voltage: 24 VDC

• Operating Range: 20.4 … 28.8 VDC

Environmental Conditions

• Operating Temperature: 0 … +60 °C

• Storage Temperature: −40 … +70 °C

• Humidity: 5–95% non-condensing

• Degree of Protection: IP20

Mechanical Characteristics

• Housing Type: S500-eCo plug-in module

• Width: 34 mm

• Height: 74 mm

• Depth: 135 mm

• Weight: 0.12 kg

• Field Wiring: Pluggable terminal connectors

Typical Applications

The DX561 is commonly used in decentralized automation systems where both sensing and actuation are required within the same I/O node. Typical use cases include machine control panels, conveyor systems, auxiliary process skids, and modular equipment assemblies. It is well suited for monitoring switches and sensors while simultaneously driving small actuators or signaling devices.

Frequently Asked Questions

Is the DX561 a pure digital input module?
No. The DX561 is a combined digital input and digital output module with 8 DI and 8 DO channels. It is not equivalent to older Advant Controller 400 DX-series input-only cards.

Can the outputs drive relays directly?
Yes. Each output channel is rated up to 0.5 A at 24 VDC, suitable for small relays, solenoids, and pilot devices within the specified limits.

Does the module support hot replacement?
Hot-swap capability depends on the specific S500-eCo base and system configuration. Always follow ABB installation guidelines for live insertion.