KL3464 Beckhoff 4-Channel Analog Input Terminal (0–10 V)

Product Overview

The KL3464 (KL3464) is a high-density 4-channel analog input terminal designed for the Beckhoff Bus Terminal system. It is engineered to process standard industrial signals in the 0 to 10 V range. By combining four independent channels into a single 12 mm housing, the KL3464 provides an efficient, space-saving solution for multi-sensor data acquisition. Each input is digitized with a 12-bit resolution, offering a reliable balance of speed and precision for monitoring process variables such as pressure, flow, and position in automated manufacturing and building control systems.

High-Density Signal Processing

The Beckhoff KL3464 is optimized for systems requiring a high number of analog points within a compact footprint. Each of the four channels is transmitted to the higher-level automation device with 500 V electrical isolation, protecting the internal K-bus from field-side electrical interference. The terminal operates with a conversion time of approximately 2 ms to 4 ms, ensuring that the PLC process image remains updated with current field data. Its "Plug-and-Play" design means no manual address or configuration settings are required, significantly streamlining the commissioning process for large-scale I/O deployments.

Technical Specifications

Technical FAQs

How does the 12-bit resolution translate to 16-bit data in the process image?

While the internal Analog-to-Digital Converter (ADC) provides 12-bit resolution, the data is mapped into a 16-bit word (4 x 16-bit) in the process image. This follows the standard Beckhoff data format, where the 12-bit measured value is typically left-aligned, allowing for consistent data handling across different terminal types in the PLC software.

What is the benefit of the high internal resistance (> 130 kΩ)?

A high internal resistance ensures that the KL3464 places a negligible electrical load on the signal source (the sensor). This prevents "voltage sag" and ensures that the terminal measures the true output of the sensor, maintaining high accuracy across all four channels.

Does this module require external power for the sensors?

The KL3464 is powered via the K-bus for its internal logic. However, the 0–10 V sensors themselves typically require an external 24 VDC power supply. Ensure that the sensor ground is correctly referenced to the terminal's common point to maintain signal integrity.

Field Engineering & Installation Guide

• Wiring Density: With four channels in a single terminal, cable management is key. Use the KS3464 variant if your application requires pluggable wiring for faster module replacement during maintenance.

• Shielding Protocol: Analog signals are sensitive to electromagnetic noise. Use shielded twisted-pair cables and connect the shield to a grounded DIN rail using Beckhoff shield clamps (KL9195 or similar) to ensure the measuring error stays below the ±0.3% threshold.

• Environmental Tolerance: The wide operating temperature range (-25 to +60 °C) makes the KL3464 suitable for unheated control cabinets or outdoor enclosures, provided the IP20 rating is respected and condensation is avoided.

Engineering Advantages

The KL3464 represents an ideal compromise between cost and performance for B2B industrial projects. Its ability to handle four signals in one slot reduces the total width of the I/O station, directly lowering cabinet costs. The terminal's compliance with EN 61000-6-2/4 standards ensures it can operate reliably in electrically noisy environments, while approvals like UL, Ex, and GL make it a globally viable component for marine, hazardous area, and general industrial applications.