Description

The Siemens 6EV1 336-5AK is a high-reliability, regulated external power supply unit designed specifically for the Simatic S5 automation ecosystem. This unit is engineered to provide stable, filtered 24 VDC power from a three-phase 380 VAC industrial grid. By ensuring consistent voltage delivery to PLC processors, logic modules, and field I/O devices, it effectively prevents system resets and communication errors caused by power fluctuations in demanding environments such as steel mills, automotive assembly lines, and chemical processing plants.

Features

• Three-Phase Input: Utilizes a 380 VAC three-phase input to reduce ripple current and minimize stress on internal components.
• Robust Protection: Features integrated overvoltage, thermal overload, and short-circuit protection to safeguard downstream automation hardware.
• Fanless Design: Employs convection cooling through a rugged metallic enclosure, eliminating the risk of mechanical fan failure.
• High Current Capacity: Delivers a sustained 10 A output current for demanding automation loads.
• Industrial Reliability: Engineered for long-term operation in high-ambient temperature environments.

Applications

This power supply is intended for use in legacy Simatic S5 automation frameworks where stable DC power is critical for system uptime. It is suitable for large-scale industrial control cabinets, distributed I/O systems, and complex process control applications requiring high-integrity power conversion.

Technical Specifications

Installation Guidelines

• Mounting: Ensure the unit is mounted in a vertical orientation to facilitate natural convection cooling through the enclosure channels.
• Clearance: Maintain adequate spacing above and below the unit to prevent heat accumulation.
• Wiring: Use appropriately rated copper conductors for the 380 VAC input and 24 VDC output terminals. Ensure all terminal connections are tightened to the specified torque to prevent high-resistance joints.
• Grounding: Connect the chassis ground terminal to a common plant earth bus to ensure EMI shielding and operator safety.
• Safety: Always disconnect the primary AC power source before installing, removing, or performing maintenance on the unit.

FAQ

Is this unit compatible with modern S7 systems?

The 6EV1 336-5AK is specifically designed for the Simatic S5 series. While it provides a standard 24 VDC output, it is recommended to verify the specific power requirements and mounting form factor of your control cabinet before integration into non-S5 systems.

Does this power supply require external cooling?

No, this unit is designed for convection cooling. Ensure that the installation environment allows for sufficient airflow around the metallic enclosure and that the ambient temperature remains within the 0 to 55 deg C range.