KL3021-0000 Beckhoff I/O Modules & Remote I/O

The Beckhoff KL3021-0000 is a precision analog input module in the KL Analog Input Modules series by Beckhoff designed for industrial automation applications. It features a high 12-bit resolution for accurate signal reproduction, a 4–20 mA input signal current range, and a fast 1 ms conversion time to ensure timely data acquisition. This module is primarily used to convert standard current signals into digital process data for machine control, monitoring, and feedback in automated production systems. Building on robust engineering, the KL3021-0000 provides a single input channel with an internal resistance of 80 Ω plus a diode voltage of 0.7 V, maintaining measurement integrity under load. It supports a process image bit width of 16 data bits and optional 8-bit control/status words, and it exhibits a measurement error of less than ±0.3% relative to full scale. With conformity to EMC immunity and emission standards EN 61000-6-2 and EN 61000-6-4, the module ensures signal integrity in noisy industrial environments. The unit draws a typical 60 mA from the K-bus and withstands up to 35 V DC surge voltage, safeguarding against transient overvoltages. The KL3021-0000 operates across a broad temperature range (0…+55 °C operating, –25…+85 °C storage) and meets vibration and shock resistance standards EN 60068-2-6 and EN 60068-2-27 for reliable performance in harsh conditions. Powered via the K-bus, it integrates seamlessly into Beckhoff control systems without additional wiring complexity. Weighing approximately 70 g, the compact module optimizes cabinet space while delivering high durability and efficiency. Its compliance with industry standards and consistent accuracy make it an ideal choice for enhancing process control and reliability in modern automated installations.