High Current Variable Frequency Ac Motor Drive 7.5 Kw Vvvf Control Constant Torque

Type  VD4-4_ _ _

7P5

Output

Matched motor (KW)

7.5

Rated output current (A)

17.0

Rated voltage (V)

AC 380

Frequency range (Hz)

0~500

Frequency resolution (Hz)

0.01

Overload ability

150%Rated Current for 1 minutes,180% Rated Current for 1 second

Input

Rated voltage and frequency

Three phase 380V; 50/60Hz

AC voltage permit fluctuate range

Voltage: -20% ～ +20％ voltage unbalance rate <3%

Frequency fluctuate Range

Frequency: ±5％

Power capacity(KVA)

11.0

Main

Function

Modulation mode

Space Optimized, voltage vector SVPWM modulation

Frequency precision

Digital Setting: max frequency×±0. 01%；

Analog Setting: max frequency×±0.2%

Frequency resolution

Digital Setting:0.01Hz；

Analog Setting: max frequency×0.1%

Start frequency

0.40Hz～20.00Hz

Torque boost

Auto torque boost, manual torque boost 0.1%～30.0%

V/FFFFF curve

Five modes: constant torque V/F curve, 1 V/F curve mode by user and 3 kinds of torque-derating modes (2nd power, 1.7th power, 1.2nd power)

Acceleration/Deceleration curve

Two modes: linear Acceleration/Deceleration, S curve Acceleration/Deceleration；seven kinds of Acceleration/Deceleration time (Maximum:6000 minutes) and unit(minute or second) is selectable.

DC braking

Initial frequency of DC braking:0~15.00Hz

Braking time:0~60.0 s     

Braking current:0~80%

Power consumption braking

Power consumption unit inside, can be connected with external braking resistor

Jog

Range of jog frequency:0.1Hz~50.00Hz, Acceleration/Deceleration time of jog operation 0.1~60.0s

Internal PI

Be able to form close loop control system easily

Multi-step

speed running

Multi-step speed running can be realized by internal PLC or control terminals

Textile wobble frequency

Adjustable preset frequency and center frequency

Auto voltage regulation

(AVR)

When the power system voltage changes, maintain the constant of output voltage

Auto energy saving mode

V/F curve is optimized automatically according to the load condition to realize energy saving operation

Auto current limiting

running current is limited automatically to avoid  trip caused by over-current

Fix-length control

The frequency inverter will stop when reaching the fixed length

Communication

function

With RS485 port, support Modbus-RTU protocol. Be with master-slave multi-devices linkage function

Running function

Command mode

Operated by three mode: digital panel, control terminal, serial port

Frequency setting mode

Setting modes can be selected ,including: potentiometer setting mode； & keys setting mode；digital function code setting mode; serial port setting mode；UP/DOWN terminal setting mode；analog voltage setting；analog current setting; pulse setting；combination setting;

Digital input channel

Forward/Reverse running command;6 channels programmable digital input,can set 35 kinds of function,X6 support 0~20KHz pulse output

Analog input channel

channel analog input ,4～20mA and 0～10V can be selected

Analog output channel

1 channel analog output,4～20mA,0～10V can be selected.

digital output channel

Programmable open-collector output,1 channel; relay output signal ,1 channel

Digital panel

LED Display

indicate parameters:  frequency ,output voltage, output current and so on.

connected device display

Indicate physical quantities, such as output frequency, output current ,output voltage and so on

key Lock

Lock all the keys

Parameter Copy

Copy function parameters between two inverters by remote control(developing)

Protect function

Over current protection；over voltage protection；under voltage protection；over heat protection；over load protection

Option parts

extension cable of digital panel; brake resistor