Variable Frequency Drive/VFD/medium voltage vfd

    Variable Frequency Drive/VFD/ medium voltage vfd   Technical  Characteristic of low voltage drive three phase inverter Power Range: 0.75kw-500kw Three Control Methods: No PG vector control (SVC), V/F control, and torque control; Starting Torque: No PG vector control: 0.5Hz/150 %( SVC); DC electric reactor is installed in drive, which enhances power factor on inputting side and enhances overall efficiency and stability; Brake unit is installed in every specification of 1.5-15kw. If need to stop working rapidly, you can connect brake resistor directly;  16 sections of simple PLC, multi-speed control and PID control; Support kinds of wideband setting mode: figure setting, analog quantity setting, PID setting, and communication setting; Support start, stop, DC braking; Input and output terminal can all be freely programmed. User can freely combine them into kinds of working modes according to requirements. Have function of jumping frequency control in order to avoid mechanical resonance and make system more stable and reliable; Have function of not stopping working when instantaneous power down. Have function of dormancy awakening time delay setting Have function of over torque test Many kinds of upper limit frequency setting source selection; Real time parameter can be seen through shift key which has two way shift function.  Have rotate speed tracking restarting function: realize smooth start  of rotating motor without impact; Quick/JOG function: user can freely define multifunction shortcut key. Through setting this parameter, can quickly browse and modify related function code which is different from delivery default value after modification. Have automatic voltage adjusting function: automatically keep output voltage constant; Have vibrating restraining function: effectively solve low-frequency vibrating problem of high-power motor; Supply many kinds of fault protection function: over current, over voltage, under voltage, over temperature, default phase, and overload.      Specificaitons:   

Item		Item Description
Input	Rated voltage: frequency	220V, 380V, 50Hz/60Hz
	Allowed voltage working range	Voltage: 220V±15%,380V±15% Voltage unbalance rate: <3%; Frequency: ±5%
Output	Voltage Range	0-380V/460V
	Frequency range	0Hz-650Hz
	Overload capacity	General type(G type): 150%Rated current 1 minute; 200% Rated current 0.5s Fan water pump Type(P type): 120% rated current 1 minute

          General Technical Specification of Drive     Main Control Performance  

Modulation Way	Magnetic Flow Vector PMM Modulation
Speed adjustable range	1:100
Starting torque	When it is 0.5Hz, it is 180% Rated torque
Rotating speed of operation/Steady state precision	≤±0.5% rated Simultaneous rotating speed
Frequency Precision	Digital Setting: ±0.01%×highest frequency; simulation setting: ±0.2×highest frequency
Frequency Resolution Ratio	Digital setting: 0.01Hz; simulation setting: highest frequency ×0.1%
Torque improvement	Automatic torque improvement, manual torque improvement 0.1%~30%
V/F Curve	Four ways: one way: user sets V/F curve, three ways: lower torque characteristic curve( 2.0 power, 1.7 power, 1.2 power)

    Customer function  

Fixed length control	When reaching set length, drive stops working.
Droop control	Suitable in many drives driving the same load occasion
Tone adjusting	Adjusting tone of motor in operation
Instantaneous stop without stopping working	When instantaneous power down, through bus voltage control, ceaseless operation can be achieved.
Binding function	Run command channel and frequency given channel can be bound casually and switched over simultaneously.

    Operation function  

Operation command channel	Given operation panel, given control terminal and given serial port can be switched off in many ways.
Frequency given channel	Number given, analogue voltage given, analogue current given, pulse given, serial port given, can be switched off in many ways.
Auxiliary frequency given	Realize flexible auxiliary frequency fine tuning, frequency synthesis
Pulse output terminal	0-50Hz pulse square wave signal output which can realize output of physical quantity of set frequency and output frequency.
Analogue output terminal	2 ways analogue signal output, 0/4~20ma or 0/2~10V can be chosen respectively; the output of physical quantity such as setting frequency, output frequency can be realized.

           Product Description:   Power range 0.75kw~500kw Three way control method: No PG vector control, V/F control. Torque control Start Torque, No PG vector control, 0.5hz/150%(SVG) 18.5KW~90KW inverter inside DC reactor, enhance input side power factor and enhance whole machine efficiency and stability. 1.5~15kw each specification built-in brake unit. Such as fast stop, can direct connects with brake resistance.   Advantages: High reliablity:TUV Certification Advanced Design:a lot of optimized designs in circuit,control system and mechanical components Robust components:from world-renowned suppliers Excellent Flexibility:customer-oriented function and communication interfaces   Service: 24-hour customer service:full-time standby for your demand Timely Supply:supply spare parts timely for at least 10 years Super Problem-solving Ability:strictly trained service team   Background: More than 20-year manufacturer background Dependable manufacturing technology and quality assurance system Accurate delivery time   Team: Strong R&D capability Complete supply chain management Professional quality and service members