GD20-09 series VFD for crane is an open-loop vector control VFD that INVT develops for cranes based on the load characteristics and control requirements of electric hoists, European-style cranes, and small-tonnage gantry or bridge cranes. Compliant with crane industry standards, integrated with crane-specific functions, and compact structured, the VFD achieves excellent performance, carries the built-in braking unit for the entire series, adopts the overall EMC design, and passes rigorous reliability testing, meeting the environment requirements on low noise and low EMI in the application sites, and greatly improving product reliability.