BECKHOFF KL9508 KL Series Power Supply Terminal

Product Overview

The KL9508 (KL9508) is a high-precision power supply terminal from the Beckhoff KL series, engineered to deliver a tightly regulated 8 V DC output from a standard 24 V DC industrial bus voltage. This module is specifically designed to provide clean, stable power to sensitive field devices or low-voltage control electronics that require an 8 V DC reference. By maintaining a low residual ripple of less than 5 mV, the KL9508 ensures optimal signal integrity for connected instrumentation, effectively mitigating noise-related errors and preventing intermittent performance issues in complex industrial automation sequences.

Technical Configuration

The KL9508 utilizes a robust terminal housing that integrates seamlessly into Beckhoff Bus Terminal nodes. It features an efficient DC-DC conversion stage that accepts a nominal 24 V DC input with a tolerance range of -15 % to +20 %. To ensure operational reliability, the module includes an integrated overcurrent protection circuit, clearly indicated by a front-mounted status LED. The terminal supports standard spring-actuated connections, compatible with the KSxxxx series for pluggable wiring, allowing for rapid deployment and simplified maintenance in dense control cabinet environments.

Technical Specifications

FAQs

What is the primary application for an 8 V DC output terminal?

The KL9508 is typically used to power specialized sensors, communication transceivers, or low-voltage transducers that operate outside the standard 24 V DC or 5 V DC industrial logic levels.

Does the KL9508 require external cooling?

No, the terminal is designed for convection cooling within a standard control cabinet environment. Ensure the unit is mounted in a vertical position to facilitate proper airflow through the housing.

Is this module safe for installation in explosive environments?

Yes, the KL9508 is ATEX-certified (II 3 G Ex nA IIC T4 Gc), making it suitable for deployment in Zone 2 hazardous areas, provided it is housed in an appropriately rated enclosure.

Engineering Guidelines and Best Practices

• Overcurrent Protection: The module features electronic current limiting. If the 0.5 A load capacity is exceeded, the output voltage will drop, and the red overcurrent LED will illuminate. Always verify that the peak start-up current of the connected load does not exceed this 0.5 A threshold.
• Wiring and Impedance: To minimize voltage drop and maintain the output precision of ±1 %, use appropriately gauged conductors. If the distance between the KL9508 and the connected device is significant, consider the resistance of the wiring to ensure the load receives the nominal 8 V DC required.
• Grounding for Noise Sensitivity: Although the module is stabilized, the common 0 V reference should be tied to the system’s central protective earth (PE) point at the control cabinet's main grounding busbar to suppress potential high-frequency noise that could impact the sensitive 8 V DC circuit.