... of VFD.frequency inverter drive..OEM are welcome..Digital control machine tool-purposed type..CE, SGS, ISO9001..Multi-function ... inverter, variable speed drive, frequency inverter, ac drives---Digital control machine tool-purposed type..Features OF variable frequency drive (VFD ... MODBUS protocol..PWM flexible energy braking, can quickly halt machine..The torque output will be 150% when the frequency ...