Schneider TM3DI8G Digital Input Module 8-Channel

Schneider TM3DI8G Digital Input Module for Modicon TM3 PLCs

Product Introduction

The TM3DI8G belongs to the Schneider Electric Modicon TM3 series. It is a digital input module with eight channels. Each channel accepts a 24 Vdc signal. Moreover, the module supports both sink and source wiring. This flexibility simplifies panel design. The unit meets Type 1 requirements of IEC 61131-2. Therefore, it suits many industrial automation tasks.

Engineers use this module to read sensors, switches, and pushbuttons. It connects to Modicon M221, M241, M251, and M262 platforms. In addition, the spring-cage terminals speed up wiring. The 5.08 mm pitch keeps the layout clean. With a width of only 27.4 mm, it saves valuable DIN rail space.

Technical Specifications

The TM3DI8G provides eight digital input channels. Its nominal voltage is 24 Vdc. Meanwhile, the operating range spans 19.2 to 28.8 Vdc. Each channel draws about 7 mA at 24 Vdc. This low current reduces load on the field supply.

Response time reaches 4 ms maximum for both turn-on and turn-off. Consequently, the module handles standard machine control tasks well. Isolation between input and internal logic is rated at 500 V AC. However, no isolation exists between channel groups. Therefore, keep common wiring practices in mind.

Diagnostics cover module status and bus status. These LEDs help during commissioning. Furthermore, the module draws 22 mA at 5 V DC from the TM3 bus when all inputs are off. Power comes through the TM3 bus, so no separate supply is needed.

Mechanical and Environmental Parameters

The TM3DI8G measures 90 mm high, 27.4 mm wide, and 84.6 mm deep. It weighs only 0.085 kg. Thus, it adds little weight to the cabinet. The protection rating is IP20. So, install it inside a clean enclosure.

Operating temperature ranges from 0 to +55 °C. Storage temperature ranges from -25 to +70 °C. These ratings fit typical factory floors. The removable spring-cage terminal block has a 5.08 mm pitch. This design allows fast replacement without rewiring the whole strip.

Installation Guide

First, mount the module on a DIN rail next to the controller. Next, connect the TM3 bus connector. Then, wire the field devices to the spring terminals. Use a small screwdriver to open each clamp. After that, insert the stripped wire and release the clamp.

Additionally, verify the sink or source configuration before power-up. The TM3DI8G supports both modes. Therefore, check the common terminal wiring carefully. Meanwhile, keep input cables away from high-voltage lines. This practice reduces electrical noise. Finally, confirm the status LEDs after applying power.

Packaging List

• 1 × Schneider TM3DI8G Digital Input Module

• 1 × Removable Spring-Cage Terminal Block

• 1 × Quick Start Guide

FAQ

Q1: Which PLC platforms support the TM3DI8G?
A: The module works with Modicon M221, M241, M251, and M262 controllers. It plugs into the TM3 expansion bus directly.

Q2: Does the TM3DI8G support both sink and source wiring?
A: Yes. Each channel accepts sink or source signals. This dual-mode design simplifies integration with different sensor types.

Q3: What is the response time of this input module?
A: The maximum response time is 4 ms for turn-on and turn-off. This speed suits most standard automation tasks.

Q4: How many channels does the TM3DI8G offer?
A: It provides eight digital input channels. Each channel operates at 24 Vdc nominal with a 7 mA input current.

Q5: What shipping methods are available?
A: We ship via Fedex, UPS, and DHL. Delivery times vary by destination and service level.