variable voltage variable frequency motor drive 1)CE,ISO9001:2000 Approved 2)AC wide input voltage 3)High frequency. variable voltage variable frequency ... -step control function6. Bulit-in PID to realize close-loop control 7. Dynamic torque current control, ... programmable multi-function input/output terminalsApplicationConveyor, Steel, Cement, CNC machine, Fan & pump, Chemical fiber, Sugar, Glass ...