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Product Description: Schneider Electric TM3AI8

The Schneider Electric TM3AI8 is an analog input expansion module from the Modicon TM3 range, designed to be used with Modicon M221, M241, and M251 logic controllers. It provides 8 analog input channels for monitoring voltage or current signals from field devices such as sensors and transmitters. With high resolution and configurable input ranges, it supports precise data acquisition for a variety of industrial automation applications.

Key Features

• 8 analog input channels
• Input signal types:
  • Voltage: 0–10 V
• Resolution: 12 bits
• Single-ended inputs with common reference
• LED indicators for module status
• Removable terminal blocks for easy wiring
• Compact and DIN rail mountable

Technical Specifications

• Voltage input impedance: ≥ 100 kΩ
• Current input impedance: 250 Ω
• Conversion time: Approx. 1 ms per channel
• Accuracy: ±1% full scale
• Isolation: No channel-to-channel isolation; common ground
• Power supply: From controller via TM3 bus
• Operating temperature: 0°C to +55°C
• Storage temperature: -40°C to +70°C
• Relative humidity: 5% to 95%, non-condensing
• Protection rating: IP20
• Dimensions (W x H x D): Approx. 23.5 mm x 90 mm x 70 mm
• Weight: Approx. 0.2 kg

Application Areas

• Process control and monitoring
• Temperature, pressure, and flow measurement
• Energy and utility monitoring
• OEM automation systems
• Building management and HVAC

Advantages

• Compact design for high-density analog input
• Supports both voltage and current signal types
• Easy integration with Modicon M2xx controllers
• Reliable analog data acquisition with industry-standard resolution
• Simple installation and maintenance with removable terminals