This document is an instruction manual for the Delta high-performance and simple AC motor drive VFD-L series. The VFD-L series is manufactured using high-quality components, materials, and the latest microcomputer control technology. This manual provides installation, parameter setting, abnormal diagnosis, troubleshooting, and daily maintenance notes for the AC motor drive. To ensure correct installation and operation of the AC motor drive, please read this manual carefully before installation and keep it properly and hand it over to the user of the machine.