BECKHOFF KL3204 Bus Terminal

Description

The BECKHOFF KL3204 is a 4-channel analog input Bus Terminal designed for the direct connection of resistance thermometers (RTDs) and resistance sensors in industrial automation systems. Operating on the modular K-bus architecture, this terminal provides high-precision evaluation of thermal values, enabling accurate feedback for control loops and system monitoring. With its 16-bit processing capabilities, it serves as a reliable data acquisition unit for standard industrial environments.

The terminal features integrated microprocessors that automatically linearize sensor characteristics over their full operational curves. It is designed around 2-wire connection technology, allowing for straightforward, compact wiring layouts. The BECKHOFF KL3204 supports a broad spectrum of popular temperature sensors, including platinum (Pt) and nickel (Ni) variants, making it a highly versatile component in diverse process installations.

Features

• Four independent analog input channels optimized for RTD and resistance measurement
• Supports multiple sensor types: Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, and Ni1000
• Features integrated linearization of temperature curves across all supported measuring ranges
• Utilizes efficient 2-wire connection technology for simplified terminal wiring
• High-resolution 16-bit analog-to-digital signal conversion
• Standard K-bus interface for reliable communication backplane integration
• Compact, space-saving design with clear diagnostic LED indicators

Applications

• Thermal process control and monitoring in industrial automation
• Heating, ventilation, and air conditioning (HVAC) systems
• Machine monitoring and equipment overheating prevention
• Environmental chamber testing and regulation systems

Technical Specifications

General

Signal and I/O

Electrical

Performance

Mechanical and Environmental

Connections / Interfaces

Installation Guidelines

1. Ensure that the power supply to the K-bus segment, Bus Coupler, and all adjacent components is fully de-energized before beginning installation.
2. Align the KL3204 Bus Terminal with the DIN rail (standard 35 mm) and push it down until it snaps securely into place.
3. Verify that the locking mechanism is engaged and that the lateral contact surfaces line up perfectly with adjacent terminals.
4. Connect the 2-wire RTD sensor leads directly to the appropriate terminal points according to the pin mapping table.
5. Configure the sensor parameters and temperature scale within your TwinCAT or third-party engineering environment to match the physical sensors connected.
6. Apply power to the Bus Coupler and monitor the diagnostic status LEDs to ensure correct operation.