The ABB DSDX451L serves as a versatile Remote I/O Expansion Unit designed specifically for distributed control system applications. This module effectively expands your controller’s reach by providing both digital inputs and relay outputs in a single compact housing. It therefore enables seamless integration of field devices into your existing ABB automation architecture.
Key Technical Specifications
We engineered the ABB DSDX451L to deliver reliable signal acquisition and switching capabilities in industrial environments. Its robust construction ensures long-term performance even with frequent switching operations.
| Parameter | Specification |
|---|---|
| Catalog Description | Remote In/Out Expansion Unit |
| Product Type | I/O Module |
| Digital Inputs | 20 channels, 24 V DC |
| Relay Outputs | 12 channels, low-level signal type |
| Input Voltage Range | 24 V DC nominal (according to EN 61131-2) |
| Output Contact Rating | Low-level switching optimized for PLC interfaces |
| Mounting Style | Direct panel or DIN rail mountable |
| Terminal Type | Pluggable screw terminal blocks |
| Dimensions (H x W x D) | 180 mm x 94.5 mm x 216 mm |
| Weight | Approximately 2.9 kg |
| Operating Temperature | 0°C to +55°C |
| Storage Temperature | -40°C to +70°C |
| Protection Rating | IP20 (for use in enclosed cabinets) |
| RoHS Compliance | Exempt under EU Directive 2011/65/EU |
Input and Output Details
The ABB DSDX451L features 20 digital inputs that accept standard 24 V DC signals from proximity sensors and limit switches. Each input channel includes built-in filtering for noise immunity in industrial settings. Additionally, the module provides 12 low-level relay outputs suitable for switching PLC input signals or indicating lights.
Mechanical and Installation Information
The ABB DSDX451L measures 180 mm in height, 94.5 mm in width, and 216 mm in depth for straightforward cabinet integration. Its pluggable terminal blocks significantly reduce installation time during commissioning or replacement. The unit’s 2.9 kg weight allows for single-person handling during panel assembly.
Details
| Weight | 0.595 kg |
|---|---|
| Dimensions | 18 × 225 × 209.7 mm |
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