The Schneider Electric TM7BAI4CLA is a 4-channel, high-precision analog input module for the Modicon TM7 distributed I/O system. It is specifically engineered for temperature measurement using thermocouples (TCs).
Parameters
Parameter Specification
Product Range Modicon TM7 Distributed I/O System
Module Type Analog Input Module (for Thermocouple)
Commercial Reference TM7BAI4CLA
Number of Channels 4
Sensor Type Thermocouple (TC)
Supported Thermocouple Types J, K, T, E, N, R, S, B, C (configurable per channel)
Measurement Range Dependent on TC type (e.g., Type K: -270°C to +1372°C)
Resolution 0.1°C or 0.1°F
Accuracy Typically ±0.3% of reading ±1°C (for Type K, within a specified range, e.g., 0°C to 400°C).
Cold Junction Compensation (CJC) Integrated, automatic.
Open Wire Detection Yes (detects broken thermocouple).
Update Time Typically 100 ms per channel (configurable).
Filtering Configurable digital filtering for signal stabilization.
Isolation Channel-to-channel and channel-to-bus isolation (typically 500 V AC).
Connection Removable screw terminal block or pluggable connector.
Diagnostic LEDs Green LED per channel (indicates active/valid measurement).
Red LED per channel (indicates fault, e.g., open wire, out-of-range).
Module STATUS LED (system status).
Communication Interface Integrated CANopen or Modbus TCP (via the TM7 communication head).
Power Supply 24 V DC (via integrated power connector).
Operating Temperature -25°C to +70°C
Storage Temperature -40°C to +85°C
Relative Humidity 10% to 95% (non-condensing)
Protection Class Typically IP67 (when connectors are properly mated).
Mounting Direct mounting or on a DIN rail (with adapter).
Certifications CE, UL, cUL, RoHS compliant.