6ES7954-8LL04-0AA0 SIEMENS Power module

Description

6ES7954-8LL04-0AA0 SIEMENS Power module

Product Dimensions：

Product Description

Siemens Power Modules are key components in the company’s SINAMICS drive system, which are Variable Frequency Drives (VFDs) designed for precise and efficient control of AC motors. The Power Module (PM) is the part of the drive that supplies the power to the motor and is typically paired with a Control Unit (CU), which provides the intelligence and control logic.

Since Siemens offers a range of different Power Modules, the specifications will vary, but the general description, advantages, precautions, and applications are consistent.

The Power Module is the power section of a modular frequency converter. It performs the power conversion—taking AC line voltage, rectifying it, and then using modern IGBT (Insulated Gate Bipolar Transistor) technology with pulse-width modulation (PWM) to generate the variable-frequency, variable-voltage output required to control the speed and torque of a connected AC motor.

It is designed to be combined with a separate Control Unit to form a complete drive. This modularity allows for flexible configuration and easy replacement of components.

Product Parameters

Specific parameters depend heavily on the Power Module series and model (e.g., SINAMICS G120 PM240-2, PM250, etc.). Here is an overview of the typical parameters:

Product Advantages

1. Modularity: The separation of the Power Module and Control Unit allows for flexible configuration, easier maintenance, and simple replacement of individual components.
2. High Power Density: Utilizing modern IGBT technology, Siemens Power Modules achieve high efficiency in a compact, space-saving design.
3. Integrated Safety: Many Power Modules, like the PM240-2, support Safety Integrated functions (e.g., Safe Torque Off – STO), simplifying compliance with machine safety standards up to SIL 3.
4. Energy Efficiency: Excellent efficiency ($\eta$) ratings and features like the PM250’s regenerative capability (feeding braking energy back into the grid) lead to significant energy savings, especially in four-quadrant applications.
5. Robustness: Features like an innovative cooling concept and coated electronic modules enhance robustness and service life in harsh industrial environments.

Important Precautions (Safety and Usage)

• Qualified Personnel: Installation, commissioning, and maintenance must only be performed by qualified personnel who are familiar with the relevant safety instructions and documentation.
• Observe Safety Notices: Always adhere to the safety alert symbols and notices in the product manual (DANGER, WARNING, CAUTION).
• Proper Application: Products should only be used for the applications described in the catalog and technical documentation. Use with components from other manufacturers must be explicitly approved by Siemens.
• Permissible Ambient Conditions: Ensure the Power Module is operated within the specified ambient temperature, humidity, and installation altitude limits to prevent overheating and premature failure.
• Wiring and EMC: Proper wiring, grounding, and the use of recommended shielded motor cables and filters (like Class A or B) are crucial to ensure EMC (Electromagnetic Compatibility) compliance and reliable operation.
• Power and Overload Ratings: Do not exceed the rated output current or overload capabilities (LO/HO) for the specific application to avoid damaging the module.

Product Applications

Siemens Power Modules are highly versatile and widely used across various industries, typically as part of a SINAMICS G120 or G120P frequency converter for speed-controlled motor applications.

• Building Technology (HVAC):
  • Pumps (heating/cooling circuits)
  • Fans and Ventilators (supply and exhaust air)
  • Compressors (refrigeration machines)
• General Machinery and Industrial Applications:
  • Conveyors and Escalators
  • Mixers and Agitators
  • Centrifuges
  • Packaging Machines
• Process Industries (often using specific G120P modules):
  • Water/Wastewater treatment plants (pumps and blowers)
  • Various Process Control applications requiring precise motor speed regulation.

Shipping Port: Xiamen, China

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