Schneider TM3AI4 Modicon TM3 Analog Input Module 4 Channels

Schneider Electric Modicon TM3AI4 is an analog input module with 4 configurable channels for voltage or current signals. Designed for standard analog measurement in machine automation and process control systems. Part of the TM3 I/O expansion family for Modicon M221, M241, M251, and M262 controllers.

Applications:

• Analog signal acquisition from pressure, flow, or level sensors

• Voltage and current monitoring in industrial machinery

• Process value measurement (0-10 V, 4-20 mA typical)

• Expansion of analog input capacity in TM3 systems

Core Specifications:

• Number of inputs: 4 analog inputs

• Signal types: Voltage (0‑10 V, ±10 V, 0‑5 V, ±5 V), Current (0‑20 mA, 4‑20 mA)

• Resolution: 12 bits (11 bits + sign)

• Input impedance: ≥ 10 MΩ (voltage mode), 250 Ω (current mode)

• Isolation: 500 V AC between channels and backplane

• Connection: Screw terminal block (fixed)

Advanced Specifications:

• Accuracy: depends on configuration and operating conditions

• Conversion time: depends on channel settings and filter configuration

• Diagnostics: per channel status LED, module error LED

• Supply voltage: 24 V DC via TM3 bus

• Protection rating: IP20

• Dimensions (W × H × D): approx. 31.3 × 90 × 70 mm

• Weight: approx. 0.11 kg

• Operating temperature: -10…55 °C

System Integration:

• Compatible with Modicon M221, M241, M251, M262 controllers via TM3 expansion bus.

• Configured in EcoStruxure Machine Expert Basic or SoMachine Basic.

Related Products (upgrade path):

• Entry level → TM3AI2 (2 channels)

• Current model → TM3AI4 (4 channels)

• Complementary → TM3AQ4 (4-channel analog output)

• Alternative type → TM3TI4 (4-channel temperature input for thermocouple/RTD)