Precise self - learning of motor parameter
•Precise self - learning of motor parameter
•Static mode : Stator / rotor time constant - Dynamic mode : Magnetic flux parameter
•The best dynamic control
Optimizing of motor noise and heat
•Unique modulation technology , decreasing current harmonics
•Frequency spectrum balance technology , adjusting motor tone
•Decrease common - mode voltage , reducing leak current Carrier wave dynamic adjusting , reducing the temperature - Reducing switching frequency when high - frequency , decreas ing the module heat
Instantaneous stop & non - stop
•Instantaneous power off , keep the continuous running - Keep the DC - Bus voltage according to electricity generating from the load
•Suitable for applications that need continuous running , e.g. chemical fiber , chemical industry Built - in PLC for flexible control
•Various running mode : circulation / one - time
•Up to 7 speed : frequency / time / direction / acceleration / deceleration could be set
•Could be controlled by terminal for pause / reset / inactive
•Could work together with length control / closed loop control / frequency - swing function
Current Shock elimination technology
•Overcome the current shock of high - power motor in no - load or small - load
•Adopt unique shock limit technology , ensure the motor smooth running
Dynamic control of DC - bus technology
•Control the DC - Bus voltage under the over - voltage protec tion point , to avoid over - voltage alarm
•Not trip even without brake unit
Optimized closed - loop control
•Command / feedback channel Prop filter time could be set independently
•Closed - loop preset frequency , ensure the system reach the steady - state
•Work together with O - frequency return difference , easy to form constant pressure water supply and constant temperature control system
•Polar could be selected in plus - minus adjustment
Speed tracking function with hardware
•Avoid the speed tracking lost with software , 100% successful
•Track the motor speed and direction smoothly and reliably
Optimized Over - modulation technology
•Applications needing high frequency and load , with lower Voltage of Power supply
•Increase efficiency of DC - Bus voltage , increase the output voltage
•Provide the enough torque output
•Decrease output current , reduce the heat
High - speed pulse output
•Up to 50KHz of output frequency
•11 Kinds of output mode
•Meet the requirement of cascading application or
anti - jamming
Unique current limit technology
•Load current control in real time , automatic current amplitude limil , strong over - load ability
•Instantaneous value / effective value controlled together
Counting function
•Counting parameter set
•Counting parameter could transfer to PLCI HMI via communication
•Counting parameter could be reset by terminal or communic ation
0 - frequency returning difference and
dormancy
•To avoid the damage when fan / pump load starts frequently in low speed , even with Pl closed - loop control
•Water - supply system need dormant running in night - Variable - Frequency air conditioner or constant pressure water supply
Constant - pressure water supply functions
•Swing amplitude could be fixed ( according to the biggest frequency ) or shifty ( according to the center frequency )
•Center frequency could be set flexibly : e.g. VCI / CCI / PLCI multi - speed / closed - loop
•Easily switching between frequency swing and normal mode
FDT function
•For application of winder spindle or lifting machine brake con- trol
•Output frequency reaching FDT level, Y terminal (relay) output
•FDT lag could be set, to avoid repeating active