Introduction

The Schneider TWDDDI16DK Digital Input Module is a Twido expansion module developed to increase the digital input capacity of compact PLC automation systems. With 16 channels of 24 VDC discrete input capability, it enables Twido controllers to interface with a wider range of industrial sensors, switches, and field devices.

Designed for practical industrial applications, the TWDDDI16DK combines compact installation, flexible input configuration, and reliable signal acquisition. Its HE-10 connector design and Twido platform compatibility make it a valuable solution for machine builders and maintenance engineers working with established Schneider Electric automation systems.

Technical Specifications

Specification	Details
Manufacturer	Schneider Electric
Model	TWDDDI16DK
Product Family	Twido
Module Type	Digital Input Module
Number of Inputs	16 Digital Inputs
Input Voltage	24 VDC
Input Voltage Range	20.4…28.8 VDC
Input Logic	Sink / Source
Input Current	5 mA at 24 VDC
Input Impedance	4.4 kΩ
Input Type	Type 1 IEC 61131-2
Common Points	1
Connection Type	HE-10 Connector
Isolation	Optical Isolation
Filter Time	Approx. 8 ms
Internal Bus Consumption	35 mA at 5 VDC (all inputs ON)
Operating Temperature	0…55°C
Storage Temperature	-25…70°C
Protection Rating	IP20
Mounting Type	DIN Rail Installation
Dimensions	Approx. 81.3 × 17.6 × 94.5 mm
Weight	Approx. 0.065 kg

Recommended Companion Models

Model	Product Name
Schneider TWDDDO16TK	Twido Digital Output Module
Schneider TWDLCAA24DRF	Twido Compact Controller Module
Schneider TWDAMI4LT	Twido Analog Input Module
Schneider TWDAVO2HT	Twido Analog Output Module

Frequently Selected Alternatives

Model	Product Name
Schneider TWDDDI8DT	Twido 8-Channel Digital Input Module
Schneider TWDDDI32DK	Twido 32-Channel Digital Input Module
Schneider TM2DDI16DK	Modicon Discrete Input Module
Schneider TM3DI16	Modicon TM3 16-Channel Digital Input Module

Where It Excels in Industrial Use

• Compact Machine Automation Input Expansion
The Schneider TWDDDI16DK is a Twido digital input module designed to expand PLC input capacity with 16 additional 24 VDC discrete input channels. It is commonly used in compact automation systems where additional sensor, switch, and field device connections are required.

• Industrial Sensor Signal Acquisition
The module provides reliable acquisition of ON/OFF signals from proximity sensors, limit switches, push buttons, and other industrial devices, making it suitable for machine control and equipment monitoring applications.

• Twido-Based Control System Expansion
Designed for direct integration with Schneider Electric Twido controllers, the TWDDDI16DK offers a convenient way to increase digital input availability without changing the existing PLC architecture.

• Legacy Automation Maintenance Projects
The module remains a useful component for engineers maintaining existing Twido installations that require replacement or expansion of digital input channels.

Key Strengths at a Glance

• 16-Channel 24 VDC Digital Inputs
Provides 16 discrete input channels for monitoring industrial field devices, supporting efficient connection of multiple sensors and control signals.

• Flexible Sink/Source Input Logic
Supports sink or source input configurations, allowing compatibility with different types of industrial sensors and control wiring methods.

• Space-Saving Connector Design
Uses an HE-10 connector interface, providing a compact wiring solution suitable for installations where cabinet space optimization is important.

• Stable Industrial Signal Processing
Designed with optical isolation between input channels and internal logic, improving system reliability in industrial environments.

Technical FAQs

1. What type of product is the Schneider TWDDDI16DK?

The Schneider TWDDDI16DK is a Twido digital input expansion module designed to add 16 additional 24 VDC input channels to compatible PLC systems.

2. How many input channels does the TWDDDI16DK provide?

The module provides 16 discrete digital input channels.

3. What input voltage does the TWDDDI16DK support?

The TWDDDI16DK supports 24 VDC digital input signals.

4. What type of sensors can be connected to the TWDDDI16DK?

The module can be connected to industrial devices such as proximity sensors, limit switches, selector switches, and other 24 VDC digital signal sources.

5. Does the TWDDDI16DK support sink and source input wiring?

Yes. The module supports both sink and source digital input logic configurations.

6. Which PLC family is compatible with the TWDDDI16DK?

The TWDDDI16DK is designed for Schneider Electric Twido PLC systems and Twido expansion architectures.

7. What connection method is used by the TWDDDI16DK?

The module uses an HE-10 connector interface for field wiring connections.

8. What programming software is used with the TWDDDI16DK?

The module is configured through Schneider Electric Twido programming software as part of the PLC hardware configuration.

9. Can the TWDDDI16DK be used for machine control applications?

Yes. It is suitable for machine automation applications requiring additional digital signal monitoring and discrete device control.

10. Is the TWDDDI16DK suitable for existing Twido system upgrades?

Yes. It is commonly selected for maintenance and expansion of existing Twido PLC installations requiring additional digital input capacity.