Schneider TM3AI8G Modicon TM3 Analog Input Module 8 Channels Spring

Schneider Electric Modicon TM3AI8G is an analog input module with 8 configurable channels for voltage or current signals. Spring terminal block for tool‑free wiring. Part of the TM3 I/O expansion family for Modicon M221, M241, M251, and M262 controllers. Designed for standard analog measurement in machine automation and process control systems.

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: 8 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)

• Accuracy: depends on configuration and operating conditions

• Conversion time: depends on channel settings and filter configuration

• Isolation: 500 V AC between channels and backplane

• Connection: Spring terminal block (fixed)

Advanced Specifications:

• Diagnostics: per channel status LED, module error LED

• Supply voltage: 24 V DC via TM3 bus

• Power consumption: from backplane and external supply

• 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):

• Lower channel count → TM3AI4 (4 channels, screw terminal)

• Current model → TM3AI8G (8 channels, spring terminal)

• Alternative terminal type → TM3AI8 (8 channels, screw terminal)

• Complementary analog output → TM3AQ4 (4 analog outputs)