Analog input module KL3314

4 analog inputs2 analog inputsfor thermocouples

Overview
The KL3314 analog input terminal supports direct connection of four thermocouples and mV measurement. The Bus Terminal circuitry operates thermocouple sensors in 2-wire mode. A microprocessor provides linearization across a freely selectable full temperature range. Internal temperature measurement at the terminal provides cold-junction compensation. Error LEDs indicate wiring faults (e.g., broken wire). The module is designed for DIN-rail mounting as a Bus Terminal analog input extension.

Key features

• Analog resolution: 12 or 16 bits
• Channels: 4 thermocouple inputs
• Supported sensors: Type K thermocouples; also measures mV
• Connection: 2-wire thermocouple operation
• Microprocessor-based linearization over full selectable temperature range
• Cold-junction compensation via internal terminal temperature measurement
• Error LEDs for fault indication (e.g., broken wire)
• Form factor: DIN-rail Bus Terminal

Variations

• 2 analog inputs 0–10 VDC, 12 bits
• 4 analog inputs 0–20 mA, 12 bits
• 4 analog inputs PT100/PT1000/Potentiometer, 16 bits
• 4 analog inputs Thermocouple K, 16 bits

Documentation

• 4 analog inputs (Thermocouple K) – Technical documentation (document language: FR)

Technical specifications

• Model: KL3314
• Function: Analog input terminal for thermocouples and mV measurement
• Channels: 4 thermocouple inputs
• Supported sensor: Thermocouple Type K (also supports mV)
• Connection technique: 2-wire thermocouple operation
• Resolution / conversion: 12 or 16 bits (product family supports 12 or 16 bits; Thermocouple K variation is 16 bits)
• Signal processing: Microprocessor-based linearization over full selectable temperature range
• Cold-junction compensation: Internal temperature measurement at terminals
• Fault indication: Error LEDs (e.g., broken wire)
• Form factor: Bus Terminal (DIN-rail)

Applications

• Analog input extension for generator and power-plant control systems
• Industrial temperature monitoring and process control
• Integration into modular I/O systems for automation