Schneider Electric TWDLCDA40DRF Twido Compact Base Controller — 24 VDC Supply, 24 Digital Inputs (24 VDC), 16 Relay Outputs - Compact PLC

Product overview The Schneider Electric TWDLCDA40DRF is a Twido-series compact base controller engineered for small- to medium-sized machine control and OEM automation. It features an integrated 24 VDC power supply, 24 discrete 24 VDC digital inputs and 16 relay outputs, delivering a high-density mixed I/O solution in a compact footprint with isolated relay switching.

Key specifications

• Manufacturer: Schneider Electric (Twido series)
• Model: TWDLCDA40DRF
• Power supply: 24 VDC integrated supply (device powered from 24 VDC source)
• Digital inputs: 24 inputs, nominal 24 VDC (designed for standard industrial 24 VDC sensors and switches)
• Outputs: 16 relay outputs (galvanically isolated relay contacts suitable for switching AC or DC loads within contact ratings)
• Form factor: Compact base/controller for panel or DIN-rail style integration (verify mounting method in datasheet)
• Programming: Compatible with Schneider Electric TwidoSuite (confirm software/firmware compatibility)

Features and benefits

• Integrated 24 VDC supply simplifies wiring for 24 VDC-based control islands and machines.
• High input count (24) supports extensive discrete monitoring (sensors, switches, encoders with digital outputs).
• Relay outputs provide galvanic isolation between control logic and field loads—suitable for contactors, solenoids, lamps and other AC/DC actuators.
• Compact design optimizes panel space for OEMs and retrofit projects.
• Seamless integration within the Twido ecosystem for programming, diagnostics and replacement workflows.

Typical applications

• Machine sequencing and discrete logic control
• Packaging, conveyors and material handling equipment
• OEM control panels and compact automation islands requiring isolated outputs
• Retrofits and replacements of legacy compact PLCs

Installation and configuration notes

• Verify all field devices and sensors supply or require 24 VDC and follow Schneider Electric wiring diagrams for correct polarity and grounding.
• Check relay contact voltage/current ratings and apply appropriate suppression for inductive loads per Schneider Electric recommendations.
• Use TwidoSuite for program development, uploading/downloading programs and diagnostics; confirm device firmware compatibility before commissioning.
• Follow applicable local electrical codes and Schneider Electric installation instructions for safe mounting and wiring.