BECKHOFF EL9505 EL Series Power Supply Terminal

Product Overview

The EL9505 (EL9505) is a high-precision power supply terminal from the Beckhoff EL series, designed to provide a stable, regulated 5 V DC output from a standard 24 V DC industrial supply. This module is ideal for powering sensitive field-level electronics, low-voltage sensors, or local communication modules that require a noise-free 5 V DC reference. By offering integrated diagnostics within the EtherCAT process image and an overcurrent status LED, the EL9505 ensures continuous system monitoring, allowing maintenance teams to preemptively detect faults and minimize unplanned downtime in automated production lines.

Technical Configuration

The EL9505 utilizes an efficient DC-DC conversion stage to deliver a highly stabilized 5 V DC output with a ripple of less than 5 mV. The unit features built-in protection against short circuits, ensuring that transient field faults do not propagate to the control bus. A unique advantage of this terminal is the inclusion of diagnostic data directly in the EtherCAT process image, which allows the TwinCAT master to monitor the output status in real-time. Designed for seamless integration, it supports side-by-side mounting using double slot and key connections and utilizes spring-actuated terminals for fast, vibration-resistant field wiring.

Technical Specifications

FAQs

What specific diagnostic information is provided in the process image?

The EL9505 maps the status of the output voltage and overcurrent conditions directly into the EtherCAT process data. This allows the PLC program to react instantly if the output voltage falls out of tolerance or if an overcurrent event occurs.

Is this terminal appropriate for driving logic-level TTL signals?

While the output is a stabilized 5 V DC, it is intended as a power supply for electronics rather than a signal output. Ensure that your TTL logic devices do not exceed the 0.5 A current capacity of the terminal.

Can the EL9505 be used in potentially explosive atmospheres?

Yes, the terminal is ATEX-approved (II 3 G Ex nA IIC T4 Gc), making it suitable for deployment in Zone 2 hazardous locations when installed in an appropriate housing.

Installation and Operational Recommendations

• Load Considerations: When powering sensitive loads, verify that the total load current remains below the 0.5 A threshold during both steady-state and peak start-up conditions. Exceeding this limit will trigger the overcurrent protection and potentially cause a system-wide diagnostic alarm.
• Thermal Management: Although the EL9505 is highly efficient, avoid placing it immediately adjacent to high-heat-generating components such as motor starters or high-density relay modules. Proper airflow around the terminal ensures the electronics operate within the optimal temperature range to maintain output precision.
• Grounding for Noise Sensitivity: Despite the low residual ripple (< 5 mV), keep the 5 V DC output lines physically separated from high-current AC or PWM control cables. If the 5 V DC is used for a precision sensor, ensure the sensor's ground reference is tied to the central star-point ground of the cabinet to prevent measurement drift caused by ground potential differences.