Main technical features: 1) power range: 0.75~630kw 2) voltage: 3ac 220/380/440v/575v/690v -15%~15% 3) output frequency: 0.00 ~ 800.00hz 4).Central control module based on dsp, realizes high-speed and high performance control. 5).Integrate v/f control, v/f+pg control, control. 6).3 space voltage vector waveform produce methods. 7).Dead compensate function, realize low frequency and large output torque control. 8).Automatic slip compensate . 9).At most 7 steps speed control and 8 steps acceleration control can be realized. 10).6 programmable output control terminals. 11).Internal pid function, realize high performance closed loop control. 12).Pid regulate dc braking. 13).Speed pursue starting and restart after momentary power loss. 14).Forced communicated function , support standard rs485 , supply remote keyboard control function. 15).Special converse module (igbt) temperature control function, adjustable fan control, timely reduce motor noise and temperature. Paper box , wooden carton 15-50kg