KL3022 | Beckhoff Bus Terminal 2-Channel Analog Input 4–20 mA 12-Bit Differential

Beckhoff · Cables & Connectivity

Description  The Beckhoff KL3022 is a 2-channel analog input Bus Terminal designed for differential current measurement in the 4–20 mA range. With 12-bit resolution, 500 V electrical isolation, and open lead detection, it provides accurate, reliable signal acquisition for industrial automation and process control applications.     Technical Specifications  Condition New/Never Used Surplus Brand Beckhoff Category Industrial Automation Part Number KL3022 Subcategory Bus Terminal Function 2-channel analog input (current, differential) Number of Inputs 2 Signal Current 4…20 mA Resolution 12 bit Conversion Time ~2 ms Measurement Error < ±0.3% (relative to full scale value) Internal Resistance 80 Ω + diode voltage (0.7 V) Common Mode Voltage (UCM) Max. 35 V Surge Voltage Resistance 35 V DC Electrical Isolation 500 V (K-bus/signal voltage) Technology Differential input Power Supply Via K-bus Current Consumption (K-bus) Typ. 60 mA Bit Width in Process Image Input: 2 × 16-bit data (2 × 8-bit control/status optional) LED Indicators Run and error LEDs for data and fault status Protection Class IP20 Operating Temperature -25°C to +60°C Storage Temperature -40°C to +85°C Relative Humidity 95%, non-condensing Weight Approx. 70 g   Information About KL3022 The Beckhoff KL3022 Bus Terminal is part of the KL3xxx series designed for reliable analog signal acquisition within automation systems. This terminal measures two differential 4–20 mA current signals with 12-bit resolution, ensuring high precision in industrial and process monitoring. It isolates the measurement signals from the control level with 500 V electrical separation, protecting connected systems from interference and voltage surges. The KL3022 supports real-time detection of open leads and overload conditions, which are reported back to the controller through the K-bus communication channel. Built-in diagnostic LEDs simplify monitoring of data transmission and fault states. With robust surge resistance and differential measurement technology, the KL3022 is particularly well-suited for connecting transmitters, sensors, and other process devices in distributed automation architectures. Key Features: Dual Differential Inputs: Two electrically isolated current input channels for accurate measurement of 4–20 mA signals. High Measurement Accuracy: 12-bit resolution and ±0.3% error tolerance deliver stable and precise current readings. Electrical Isolation: 500 V separation between the K-bus and signal voltage ensures system safety and reduces interference. Built-in Diagnostics: LED indicators signal communication activity, overload conditions, and open-circuit faults. Differential Signal Measurement: Common internal ground and differential input design minimize noise and ground loop issues. Rugged Industrial Design: Operates across a wide temperature range (-25°C to +60°C) and high humidity for demanding environments. Surge Voltage Protection: Withstands up to 35 V DC surge to ensure long-term operational reliability. Fast Signal Conversion: 2 ms conversion time allows responsive current signal acquisition for dynamic processes. Compact Modular Integration: Fits seamlessly into Beckhoff’s Bus Terminal system for scalable automation setups. Reliable Communication: Data is transmitted via the K-bus process image, ensuring consistent and synchronized performance. The KL3022 delivers the reliability and precision required for analog current measurement, monitoring, and control in industrial automation and process systems.

Brand: Beckhoff · Category: Cables & Connectivity

Key features

• Dual Differential Inputs: Two electrically isolated current input channels for accurate measurement of 4–20 mA signals.
• High Measurement Accuracy: 12-bit resolution and ±0.3% error tolerance deliver stable and precise current readings.
• Electrical Isolation: 500 V separation between the K-bus and signal voltage ensures system safety and reduces interference.
• Built-in Diagnostics: LED indicators signal communication activity, overload conditions, and open-circuit faults.
• Differential Signal Measurement: Common internal ground and differential input design minimize noise and ground loop issues.
• Rugged Industrial Design: Operates across a wide temperature range (-25°C to +60°C) and high humidity for demanding environments.
• Surge Voltage Protection: Withstands up to 35 V DC surge to ensure long-term operational reliability.
• Fast Signal Conversion: 2 ms conversion time allows responsive current signal acquisition for dynamic processes.
• Compact Modular Integration: Fits seamlessly into Beckhoff’s Bus Terminal system for scalable automation setups.
• Reliable Communication: Data is transmitted via the K-bus process image, ensuring consistent and synchronized performance.

Specifications

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