VFD Inverter Drive Board A5E41929947 FF450R12ME4-B11

This combination of part numbers refers to a Power and Control Module Assembly used within a Siemens SINAMICS or SINAMICS-based Variable Frequency Drive (VFD), likely from the G-series or similar high-power drive lineup. The assembly consists of one or more printed circuit boards (PCBs) that interface with and drive the main power semiconductor module (IGBT).

Board and Assembly Part Numbers:

• A5E41403941-AC & A5E03932844: The main VFD processor and convert them into the high-current, isolated gate signals required to switch the large FF450R12ME4P_B11 IGBT module.
• A5E38982303 & A5E41929947: These are often the main Power PCB or Interface Board where the IGBT module is mounted, connecting the high-voltage DC bus, the driver boards, and the output phases to the motor terminals.

IGBT Module Specifications (Infineon):

• Module Name: FF450R12ME4P_B11 (and the non-P variant FF450R12ME4-B11).
• Manufacturer: Infineon Technologies (the main supplier for Siemens power electronics).
• Type: Six-Pack IGBT Module (a complete three-phase bridge).
• Key Ratings:
  • Voltage (VCES​): 1200 V (volts)
  • Current (IC nom​): 450 A (amperes)
• Package: EconoPACK™ 4 or similar.

Summary of Function:

The combination of the Siemens A5E boards and the Infineon FF450R12ME4P_B11 module forms the complete inverter section of a high-power VFD (likely 160−200 kW rated motor power, depending on the drive’s overload capacity).