Variable Frequency Converter 50HZ 60HZ 220v to 380v Inverter 4KW 5.5KW 7.5KW 11KW

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Product Description:


Variable speed drive 
1), Super quality, competitive price, good after-sale service 
2), universal motor speed control 
3) VFD

VFD AC frequency converter Inverter 50HZ 60HZ 220v to 380v AC motor Drive

Product Description

PI9000 series inverters are high performance open loop vector inverter for controlling asynchronous AC induction motors andpermanent magnet synchronous motors.

PI9000 Specification





Voltage and frequency levels

Single-phase 220,50/60Hz Three-phase 220V,50/60Hz

Three-phase 480V,50/60Hz 380,50/60Hz 

Three-phase 690V,50/60Hz

Allowable fluctuation

Voltage:±10% Frequency:±5%

Control system

High performance vector control inverter based on DSP

Output frequency

Vector control:0 to 300Hz V/F control:0 to 600Hz

Control method

V/F control, vector control W/O PG, vector control W/ PG

Automatic torque boost function

Realize low frequency (1Hz) and large output torque control under the V/F control mode.

Acceleration/deceleration control

Straight or S-curve mode. Four times available and time range is 0.0 to 6500.0s.

V/F curve mode

Linear,square root/m-th power,custom V/F curve

Over load capability

G type:rated current 150% - 1 minute, rated current 180% - 2 seconds

F type:rated current 120% - 1 minute, rated current 150% - 2 seconds

Maximum frequency

Vector control:0 to 300Hz V/F control:0 to 600Hz

Carrier Frequency

0.5 to 15kHZ;automatically adjust carrier frequency according to the load characteristics.

Input frequency resolution

Digital setting: 0.01Hz Analog setting: maximum frequency×0.025%

Start torque

G type: 0.5Hz/150% (vector control W/O PG) F type: 0.5Hz/100% (vector control W/O PG)

Speed range

1:100 (vector control W/O PG) 1:1000 (vector control W/ PG)

Steady-speed precision

Vector control W/O PG: ≤ ± 0.5% (rated synchronous speed)

Vector control W/ PG: ≤ ± 0.02% (rated synchronous speed)

Speed control accuracy

Vector control W/O PG≤±0.3% ( rated synchronous speed )

Torque response

≤ 40ms (vector control W/O PG)

Torque boost

Automatic torque boost; manual torque boost(0.1% to 30.0%)

DC braking

DC braking frequency: 0.0Hz to max. frequency, braking time:
0.0 to 36.0 seconds, braking current value: 0.0~100.0s

Jogging control

Jog Frequency Range: 0.00Hz to max. frequency;
Jog Ac/deceleration time: 0.0s~6500.0s

Multi-speed operation

Achieve up to 16-speed operation through the control terminal

Built-in PID

Easy to realize closed-loop control system for the process control.

Automatic voltage regulation(AVR)

Automatically maintain a constant output voltage when the voltage of electricity grid changes

Torque limit and control

"Excavator" feature - torque is automatically limited during the operation to prevent frequent
overcurrent trip;the closed-loop vector mode is used to control torque

Running method




The optional completely isolated RS485/RS232/CANBUS/PROFIBUS communication module can communicate with the host computer.

Product standard

Product adopts safety standards.


Product adopts EMC standards.


Cooling method

Forced air cooling and natural air cooling


 Why do most clients choose PI9000?


1,150% torque at 0.5hz;


2,Vector control with open-loop,closed-loop control;


3,Automatically identify the motor parameters,self-learning;


4,install PID,main spindle control for CNC lathe;


5, Modbus communication protocol,RS485 communication,CANlink;


6, Simple PLC and multistage speed;


7,Speed tracking function;


8,Carrier frequency automatic adjustment;


9,Pendulum frequency;


10,Various protection mechanisms (over current/over voltage/overload, overheating, etc), 

      to protect the inverter and motor.


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