The Schneider Electric TM3TI4 is a 4-channel analog input expansion module in the Modicon TM3 family, designed to extend the I/O capabilities of Modicon logic controllers such as M221, M241, M251, and M262. It accepts multiple types of analog signals including voltage, current, thermocouples, and RTDs, offering flexible process and temperature measurement options for industrial automation systems.
Parameters
▶️ General
Product type: Analog input expansion module (Modicon TM3 series).
Model: TM3TI4 (screw terminal version).
Compatible controllers: Modicon M221, M241, M251, M262.
Rated power supply: 24 V DC.
Mounting: DIN-rail via TM3 bus base.
Protection rating: IP20.
Dimensions: Approx. 23.6 mm (W) × 70 mm (D) × 90 mm (H).
Weight: ~0.11 kg.
Connection: Removable screw terminal block.
▶️ Inputs
Number of channels: 4 analog inputs.
Signal types supported:
Voltage: 0…10 V, –10…+10 V.
Current: 0…20 mA, 4…20 mA.
Thermocouple types: K, J, R, S, B, E, T, N, C.
RTDs: PT100, PT1000, NI100, NI1000.
Resolution: 16-bit (or 15-bit + sign).
Input cable: Twisted pair shielded, max length ~30 m.
▶️ Electrical / Power
Current consumption: ~45 mA–50 mA via 5 V bus power; ~35 mA–40 mA from 24 V DC external supply.
Isolation: Typical industrial isolation between inputs and supply/internal logic (e.g., 1500 V AC and 500 V AC respectively).
▶️ Status & Indicators
LED: Green PWR LED for module power status.
Applications
Process and temperature monitoring with thermocouples/RTDs.
Analog sensor acquisition in industrial automation systems.
Integration with Modicon PLC logic for control and feedback functions.