Digital input/output module, 4 inputs, 4 relay outputs, 24 VDC, screw terminals TM3DM8R

Digital Input/Output Expansion Module – Reliability and Flexibility in Automation

This digital input/output module, designed for Modicon TM3 systems, expands the capabilities of PLC controllers with additional signal points. It allows easy connection of sensors and actuators, increasing the functionality of the automation system. It is a solid solution for both professional installers and end-users who need a reliable and flexible way to expand their installations.

Construction and Application

The TM3DM8R module offers 4 inputs and 4 relay outputs, powered by 24 VDC. It uses screw terminals for connecting wires, ensuring a secure and durable connection. Relay outputs allow control of devices with different voltages (30-264 V AC/DC), making it versatile in many industrial applications. A signal change delay of 4-10 ms ensures stable system operation.

Key Advantages and Features

• Versatility: 4 digital inputs and 4 relay outputs provide great flexibility in system configuration.
• Universal Voltages: Relay outputs support a wide range of AC/DC voltages (30-264 V), enabling control of various devices.
• Solid Connections: Screw terminals ensure safe and durable wire connections.
• Compact Dimensions: Width 27.4 mm, height 90 mm and depth 84.6 mm allow easy integration with existing systems.
• Low Energy Consumption: Power consumption at 2.5 W minimizes power supply load.
• Safety: Lack of redundancy and lack of intrinsically safe equipment (Ex ia/ib) means the module is not intended for hazardous areas – this should be considered when designing the installation.
• Compatibility: The module is compatible with Modicon M241 systems, making integration with existing Schneider Electric solutions easier.

Technical Parameters in Practice

The TM3DM8R module is characterized by an output current of up to 2A per relay output, allowing control of most standard actuators. The input voltage accepts a range from 19.2 to 28.8 V DC, and the power supply is via 24 VDC (AC). The lack of configuration options for digital inputs and outputs means their functionality is fixed – simplifying system configuration for less advanced users.