Schneider TM3TI4 | Modicon TM3 – 4 analog / temperature inputs (screw) 24Vdc

The Schneider TM3TI4 is a compact analog and temperature input module from the Modicon TM3 expansion series, designed to enhance the analog input capabilities of Modicon M221, M241, and M251 PLCs. It provides high-precision monitoring of analog signals or temperature inputs in industrial automation systems.

General Overview

• Product Name: TM3TI4

• Series: Modicon TM3

• Function: Analog / temperature input module

• Input Type: 4 analog or temperature inputs

• Input Signal Type: RTD, thermocouples, voltage, current (configurable)

• Mounting: DIN rail

• Connection Type: Screw terminal block

• Power Supply: 24 V DC

Main Features

• Number of Inputs: 4 configurable analog or temperature inputs

• Signal Types Supported:

  • Thermocouples (J, K, T, etc.)

  • RTDs (Pt100, Pt1000, Ni100, Ni1000)

  • Voltage (0–10 V, ±10 V)

  • Current (0–20 mA, 4–20 mA)

• Input Resolution: 16 bits

• Conversion Time: < 10 ms per channel

• Isolation: Channel-to-bus and channel-to-channel isolation

• Cold Junction Compensation: Integrated (for thermocouples)

Electrical Specifications

• Supply Voltage: 24 V DC

• Current Consumption: ~35 mA at 5 V from PLC bus

• Input Impedance:

  • Voltage: ≥ 100 kΩ

  • Current: 250 Ω (internal shunt)

• Common Mode Rejection: > 100 dB

• Galvanic Isolation: Yes (between channels and backplane)

Mechanical & Environmental

• Mounting Type: DIN rail (35 mm)

• Terminal Type: Screw connectors

• Module Width: 23.5 mm

• Operating Temperature: -10°C to +55°C

• Storage Temperature: -40°C to +70°C

• Degree of Protection: IP20

• Standards: IEC 61131-2 compliant

Certifications

• Certifications: CE, cULus, EAC

• EMC Compliance: EN/IEC 61000-6-2 and EN/IEC 61000-6-4

• Pollution Degree: 2

Applications

• Process temperature monitoring and control

• HVAC systems

• Food and beverage automation

• Machine building (OEMs)

• Industrial process control with analog sensors

Advantages

• Flexible analog/temperature input options

• Compact design fits easily into control panels

• High accuracy and noise immunity

• Seamless integration with Modicon M221/M241/M251 PLCs

• Ideal for applications needing mixed input types (thermocouple + RTD + analog)