OVERVIEW

Official designation: Schneider Electric TWDDDI8DT (Twido, Discrete Input Module)

Role/Application: An 8-point 24 VDC discrete input module for Twido PLCs, providing signal acquisition and expansion capability in industrial control systems.

KEY SPECS SUMMARY

Power: 20.4 to 28.8 VDC input voltage limits

Interfaces / Ports: Removable screw terminal block connection

Indicators: Refer to the latest manufacturer manual.

Operating Temp: 0 to 55 degrees C for ambient air operation

Platform / Compatibility: Twido programmable logic controllers

Limit: 7 mA discrete input current, 3.4 kOhm input impedance

Lifecycle: Discontinued, replaced by Modicon TM3 Expansion I/O modules

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the primary method of insulation between the input channels and internal logic?

A: The module achieves insulation using a photocoupler, rated for 1500 Vrms for one minute.

Wiring & Installation:

Q: Does the TWDDDI8DT discrete input module support both sink and source wiring logic?

A: Yes, the module is designed to accept either sink or source discrete input logic signals.

Troubleshooting & Compatibility:

Q: What are the specific power consumption requirements for the TWDDDI8DT at state one for all inputs?

A: Current consumption is 25 mA at 5 VDC at state one when all 8 inputs are active.

Replacement & Upgrades:

Q: What is the recommended replacement product range for the discontinued TWDDDI8DT input module?

A: The Modicon TM3 Expansion I/O module range, such as the TM3DI8, is the direct replacement.