Description

Designed for precise power regulation of ohmic loads, the BECKHOFF KL2512 Bus Terminal operates as a dual-channel pulse-width modulation (PWM) output module within the Beckhoff K-bus system. By modulating the 24 V DC line with an adjustable duty cycle from 0% to 100%, this module provides efficient control for heating elements, thermoelectric coolers, and small DC-operated devices. The unit integrates seamlessly into standard Beckhoff terminal segments, facilitating decentralized automation with minimal configuration requirements.

The BECKHOFF KL2512 features a configurable PWM clock frequency from 1 Hz up to 20 kHz, allowing engineers to tune the output signal to prevent harmonic interference and match specific load characteristics. Electrical isolation of 500 V between the K-bus and the field potential ensures reliable system protection in demanding industrial environments.

Features

• Two independent pulse-width modulation (PWM) output channels designed for ohmic loads.
• Adjustable PWM clock frequency range from 1 Hz to 20 kHz (defaulting to 250 Hz) for highly flexible tuning.
• Up to 10-bit resolution for precise output signal duty factor control.
• Robust galvanic isolation of 500 V between the K-bus internal electronics and the field potential.
• Compact, DIN-rail mountable form factor supporting pluggable wiring for KSxxxx variant compatibility.
• Direct configuration via standard Bus Coupler or industrial controller without hardware address settings.

Applications

• Control of thermoelectric coolers (Peltier elements) in temperature-controlled chambers.
• Dimming and brightness regulation of resistive lighting and indicator panels.
• Duty cycle regulation of industrial heating elements and thermal processing heaters.
• Speed control for small, non-inductive DC motors and actuators.

Technical Specifications

Installation Guidelines

• Mount the terminal securely on standard 35 mm DIN rails conforming to EN 60715.
• Ensure all electrical power is disconnected before inserting, removing, or wiring the terminal to prevent damage to the K-bus connection.
• Use appropriate external fusing on the 24 V DC power line to protect the outputs against overcurrent conditions.
• Maintain clear ventilation space around the terminal assembly to ensure operating temperatures do not exceed +55 degC.

Compliance and Certifications

• CE
• ATEX: II 3 G Ex ec IIC T4 Gc
• IECEx: Ex ec IIC T4 Gc