Product Description:

Danfoss manufactures the 131X6021 as part of the VLT FCD 302 Decentral Drives series, placing the inverter directly on the motor to shorten cable runs, reduce cabinet wiring, and simplify installation on conveyors, mixers, and fans. The unit serves as a variable-frequency power stage that converts plant mains into a regulated output for induction motors. Mounting the inverter near the motor keeps speed control at the equipment and supports decentralized layouts for local machine sections where a separate control cabinet is not preferred.

The drive accepts a supply of 380–480 VAC three-phase, so it can be wired to typical industrial networks without an isolation transformer. Its continuous mechanical output is rated at 2.2 kW, and the sealed Standard Black IP66/NEMA 4X housing supports full-power operation in washdown areas without an added enclosure. Network integration is handled by the A-option card, specified as Profibus DP, which allows cyclic speed references and diagnostics from higher-level PLCs. A factory-installed RFI filter limits emissions to Class A1/C2, and the absence of display, fieldbus, mains, motor, and sensor plugs keeps the enclosure smooth for hygienic zones. With no brackets or installation box included, the unit bolts directly to a flat surface, and the no switch option leaves control to the fieldbus or remote terminals.

For load considerations, the shaft rating is 3.0 HP, and the auxiliary power board includes a 24 V DC back-up input that keeps the control logic active during mains interruptions. The control platform is identified as 302 within the FCD line, marking this generation of the decentralized drive. The configuration omits a mechanical brake, noted as no brake, so holding torque must come from motor flux or an external brake. It also has no B-option, and no threads are provided for accessory fittings.