EL9515 BECKHOFF 15 V DC Power Supply Terminal with Diagnostics

Product Overview

The EL9515 (EL9515) is a high-precision power supply terminal designed to convert a standard 24 V DC input into a stabilized 15 V DC output within the EtherCAT terminal system. This module is specifically engineered to provide clean, low-noise power to specialized field devices—such as high-end analog sensors, encoders, or transducers—that require a 15 V potential. Equipped with integrated diagnostics and an overcurrent LED, the EL9515 ensures the integrity of the secondary power circuit. Its compact 12 mm design and ATEX certification make it an essential component for B2B industrial applications in hazardous areas, laboratory automation, and precision instrumentation where voltage stability is critical.

Technical Configuration (Deep Dive)

The EL9515 functions as a DC/DC converter, drawing power from the 24 V DC power contacts and providing a regulated 15 V DC output at a maximum current of 0.5 A. The output is exceptionally stable, boasting a ±1 % tolerance and a residual ripple of < 5 mV, which is vital for preventing signal jitter in sensitive analog measurements.

Safety and system uptime are prioritized through short-circuit proof circuitry and comprehensive diagnostics. The terminal reports its operational status—including overcurrent or fault conditions—directly into the EtherCAT process image. This allows the master controller to monitor the health of the 15 V supply in real-time. For visual inspection, a dedicated diagnostic LED provides immediate feedback on the module’s status without requiring a software connection.

Technical Specifications

Technical FAQs

How do I access the diagnostics for the EL9515?

The diagnostics are mapped into the EtherCAT process image. You can link these variables in TwinCAT to monitor for "Under Voltage" or "Overcurrent" states. Additionally, the red LED on the front of the terminal will illuminate if the 0.5 A current threshold is exceeded.

Does the EL9515 provide power to the next terminal via power contacts?

The 15 V output is provided via the terminal connection points for field wiring. The internal power contacts (blades) typically carry the primary 24 V DC supply to downstream modules. Always verify the current path in your specific hardware configuration to ensure the 15 V potential is routed only where intended.

Is this terminal suitable for use in explosive atmospheres?

Yes. The EL9515 carries the ATEX marking (II 3 G Ex nA IIC T4 Gc), making it suitable for installation in Zone 2 hazardous areas when housed in an appropriately rated enclosure.

Engineering & Installation Guide

• Voltage Sensitivity: Due to the low residual ripple (< 5 mV), this module is ideal for supplying power to high-resolution analog-to-digital converters (ADCs). To maintain this performance, keep the 15 V supply leads as short as possible and separate them from high-interference AC lines.

• Wiring and Termination: The terminal features ES series pluggable wiring, allowing for the removal of the wiring level without disconnecting individual leads. Use a screwdriver to actuate the spring clamps, ensuring a stripping length of 8 to 9 mm for a secure, vibration-resistant connection.

• Thermal Considerations: While the module is rated for 0.5 A, ensure the 24 V DC input supply is robust. The conversion process generates a small amount of heat; ensure the 12 mm terminal has sufficient vertical clearance (30 mm) for convective cooling within the cabinet.

Engineering Advantages

The EL9515 excels by eliminating the need for bulky, external 15 V power supplies, thereby saving significant DIN rail space. Its 500 V galvanic isolation protects the EtherCAT backplane from potential field-side electrical anomalies. Conforming to EN 61000-6-2/4 for EMC, it is built to operate reliably in electrically noisy industrial environments. For B2B machine builders, the integrated diagnostic feedback simplifies the creation of sophisticated HMI alerts, ensuring that power supply issues are identified and resolved before they lead to broader system failures.