BECKHOFF KL3444 Bus Terminal Analog Input Module

Description

Engineered for processing standardized analog current signals, the Beckhoff KL3444 Bus Terminal processes signals in the 0 to 20 mA range with high-resolution acquisition. This compact, 12 mm wide module features four single-ended input channels, making it optimal for spaced-constrained control cabinets requiring multi-channel density. The device derives its power directly from the internal K-bus system, enabling seamless communication with the master PLC or industrial PC coupler. Utilizing 12-bit digital resolution, the module ensures accurate transmission of system variables to the controller. A robust design featuring 500 V galvanic isolation between the K-bus and the field signal inputs guarantees system stability and protects sensitive control-side electronics from external electrical disturbances.

Features

• Four single-ended analog input channels operating in the 0 to 20 mA range.
• Fast conversion time of approximately 2 ms for real-time monitoring.
• Galvanic isolation of 500 V between the K-bus and the input signal lines.
• Compact KL-12-8pin housing with integrated status LEDs for quick diagnostic checks.
• Tool-free mounting on 35 mm DIN rails via double slot-and-key connection.
• Spring-clamp termination for quick, vibration-resistant field wiring.

Applications

• Process manufacturing and chemical plant signal monitoring.
• Water and wastewater pressure/flow sensor integration.
• Machine building and factory automation telemetry.
• HVAC control and environmental monitoring systems.

Ordering Information

Technical Specifications

Installation Guidelines

• Mounting: Snap securely onto a standard 35 mm DIN rail (conforming to EN 60715). Ensure the locking mechanism is engaged.
• Wiring: Use solid (0.08 to 2.5 mm²), flexible (0.08 to 2.5 mm²), or ferruled (0.14 to 1.5 mm²) conductors. Push a suitable screwdriver into the spring release to insert the wire.
• Shielding: Route signal lines away from high-power distribution lines. Use shielded cables in high-noise environments to ensure signal integrity.
• Ventilation: Maintain standard operating spacing around the module to prevent thermal buildup, ensuring ambient temperature remains below +55 degC.

Compliance and Certifications

• CE
• UL
• ATEX: II 3 G Ex nA IIC T4 Gc
• DNV GL