Low Voltage AC Frequency Inverter Drive Three Phase VFD on Fan And Pumps

Low Voltage AC Frequency Inverter Drive Three Phase VFD on Fan And Pumps

AC Drive, Frequency Inverter, VFD manufacturer / supplier in China, offering Low Voltage AC Frequency Inverter Drive Three Phase VFD, 0.4kw-3.7kw 1&3 Phase Variable Frequency Drive, VFD,5.5kw-500kw 1~2500nm AC Motor Servo Drive and so on.

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Product Details

Product Description

  AVF508 series Low Voltage VFD has the following features:
  Multiple Control Modes:
  *Supports multiple control modes: vector V/F control, sensorless vector speed control,
   sensorless vector torque control, sensor vector speed control and sensor vector torque
   control .
  Advanced Vector Control Algorithm:
  *The optimized VF control and sensorless vector control is more stable at low speed,
   more powerful in the ability of low frequency torque output and with better dynamic
   response and both the sensorless vector and sensor vector mode support speed
   control and torque control.


Input and output
Featured Functions
Input Voltage1AC 220~240V(±15%)
3AC 220~240V(±15%)
3AC 380~460V(±15%)
Featured FunctionsInput&Output delay
Flexible parameters display
AVR(Automatic Volatage Regulation)
Timing Control,fixed length control, etc.
Simple PLC,16-Steeps Speed control
Torque control bulit-in
S curve acceleration.deceleration
Mulit functional programmable keypad
V/f separated control
Input Frequency50Hz/60Hz±5%)
Output Voltage 0~input voltage, deviation<±3%
Output Frequency0~3200Hz
Control Characteristics
Control modeV/F control
Sensor-less vector control
Closed-loop vector control (CLVC) (+PG Card)
Speed accuracy± 0.5%(V/F SVC)    
± 0.02% (CLVC)
Environment Limitation
Speed fluctuaion± 0.5%(SVC)    
± 0.02% (CLVC)
Install locationWithout direct sunlight,free from dust, corrosive gas, oil mist,flammable gases,water vapor,water drop or salt, etc.
Torque Response<10ms( SVC)Altitude0~2000m derated 1% for every 100m when the altitude is above  1000 meters
Starting torque0.3Hz:150%(V/F SVC)  
0 Hz:180% (CLVC)
Storage temperature-20°C~+70°C
Overload capacity

150% Rated Current 60s

180% Rated Current 3s

200% Rated Current1s                                            

Relative Humidity5~95%, no condensation
Simple PLC Multi-step speed16steps speed    
External digital signal control Internal lock
PID function
Standard build-in
CommunicationModbus Canopen/Canbus(PG card)


Products Construction
AVF508 series Low Voltage VFDs are Used on Fan And Pumps

1, Load feature
  (1)  Both of them belong to fluid control.
  (2) If without VFD, the fluid is controlled by valve or baffles;
  (3) For less fluid required system, there will be more energy saving.
  (4) In theory, if the running frequency is H1, then
        Energy Saving = 1-(H1/50)3

2,  Requests for frequency inverters (VFD)
  (1) Soft start the motor, reduce the surge current.
  (2) VFD should work continuously without fault.
  (3) Speed tracking and start (flying start) function should be reliable.
  (4) In some systems, PID function is required.

3,  Real example
  In a hotel, there is an central air-conditioner, the cooling fan is one PCS of 15kW motor, in one year,
  it runs 4000h, 2000h with the air flow of 85%, 2000h with the air flow of 60%.

4,  Typical wiring diagram

connection diagram.jpg

Our Service:
1.   Can I get some samples?
Yes, Sample order is available for quality check and market test .But you have to pay for it .
2.   What's delivery time?
It usually takes about 3-5 working days for small order and 10-15 days for big order .
3.   What's your payment terms?
We usually accept all kinds of payment terms .Such as T/T,L/C, Western Union.Cash.
4.   What's your warranty terms?
We offer 12 months warranty time .
5.   Do you have the products in stock?
Depends on your request ,We have standard models in stock. Some special products and big order will be newly produced according to your order .
6.   Can I mix different power in one container .
Yes ,Different models can be mixed up in one container ,even one order .
7.   How does your factory do the quality control?
Quality is priority ,we always attach the importance to quality control from the beginning to the end of the production .every product will be fully assembled and carefully tested before packing and shipping .
8.   Can you sell spare parts ?
If you are using our products .we can sell spare parts to you . 
9.I would like to know if you have a partner for export?
Yes .We have the right to export and can sell electrical product all over the world..
10. Can you make the inverter and soft starter control boards (switchgear)?
Yes. We have a lot of experience to design frequency inverter and soft starter cabinet according to your request . 
11.Can the inverter connect with computer?
Yes .All inverters have built-in RS485 port .and support Modbus communication protocol. 
12.How can I trust you ?
Our company has been audited and approved ISO9001,CE.CCC. Assessment report will could be sent to you by e-mail. and we will take all the responsibility once problem during warranty time.