NEW 6ES7231-5QF32-0XB0

Model and Series Identification: This module, designated 6ES7231-5QF32-0XB0, is part of the SM 1231 family of analog input modules for the SIMATIC S7-1200 PLC system, specifically categorized as AI 8xTC. It is designed to expand the high-density thermocouple input capabilities of S7-1200 controllers, enabling simultaneous temperature monitoring from multiple sources.

Function: It converts the low-voltage signals generated by thermocouples into digital values that the S7-1200 CPU can process, facilitating precise temperature measurement in industrial processes. This makes it suitable for applications such as batch processing, thermal profiling, and multi-zone furnace control.

Input Specifications: Equipped with 8 analog input channels, each compatible with a broad range of thermocouple types including J, K, T, E, N, S, R, and B (configurable via software). The module features built-in cold junction compensation to ensure measurement accuracy, with typical accuracy ranging from ±0.5°C to ±2.5°C depending on the thermocouple type and temperature range.

Electrical Characteristics: The maximum current drawn from the backplane bus (5V DC) is 130mA. It provides galvanic isolation (500V AC for 1 minute) between channels and from the backplane bus, enhancing noise immunity in industrial environments with high electromagnetic interference.

Configuration and Diagnostics: Supports flexible parameterization via TIA Portal, allowing users to select thermocouple types, adjust filtering settings, enable/disable cold junction compensation, and configure fault detection. Diagnostic functions include open-circuit detection for thermocouple wires and overvoltage protection, enabling efficient troubleshooting of sensor or wiring issues.

Mechanical and Protection Features: Housed in a plastic enclosure with an IP20 protection rating, suitable for installation in control cabinets. Its dimensions are 45mm (width) x 100mm (height) x 75mm (depth), with a weight of approximately 230g. A front connector is required for wiring.

Environmental Compliance: Operates in a temperature range of -20°C to 60°C, with storage and transportation temperatures from -40°C to 70°C. It complies with relevant industrial standards (including IEC 61131-2) and RoHS directives, ensuring compatibility with global markets and environmental safety.