Variable Frequency Drive

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Description Of Variable Frequency Drive  

Variable Frequency Drive is a high-quality, multi-function, low-noise variable frequency drive which is designed, developed and manufactured according to international standards. It can meet different needs of industrial conditions.The inverter applies advanced control technology of space voltage vector PWM, with functions of constant voltage control, power-off restart, dead zone compensation, automatic torque compensation, online modification parameter, high-speed impulse input, simple PLC and traverse

 

Features Of Variable Frequency Drive  

1).Adopts 16 bit microprocessor, sine wave PWM control 

2).Automatic torque ascension and automatic sliding compensation function 

3).Output frequency 0.1-400 Hz 

4).8 period of speed setting and 7 period can be running the program 

5).Low noise, carrier frequency can from 1 kHz-15 kHz adjustment 

6).Two paragraphs Acceleration and deceleration time and two segments of the S Curve slow and deceleration 

7).Simulation frequency set acceptable 0-10 VDC, 4-20 mA 

8).The built-in serial communication interface RS-485(baud rate can reach 38400) 

9).Save energy running and automatic voltage stabilizing section function (AVR) 

10).Adjustable V/F curve Acceleration and automatic and deceleration function 

11).Simple vector control and built-in PID control, and the simple positioning function 

12).Sleep/wake up function and zero velocity keep function

 

Structure Of Variable Frequency Drive  

Four Side Moulder

 

Application Of Variable Frequency Drive

★Textile: coarse spinner, spinning frame, wrap-knitting machine, loom, knitting machine, silk-spinning machine, etc. 

★Plastic: extruder, hauling machine, decorating machine, etc. 

★Pharmacy: mixer, roaster, etc. 

★Woodworking: engraving machine, sander, veneer peeling lathe, etc. 

★Papermaking: single type papermaking machine, etc. 

★Machine tool: non-core grinding machine, optical lens grinding machine, cutting mill, etc. 

★Printing: cloth-washing machine, dye vat, etc. 

★Cement: feeder, air blower, rotary furnace, mixer, crusher, etc 

★Fan and pump: kinds of fans, blowers and pumps

 

Four Side Moulder

 

Performance Of Variable Frequency Drive

ItemSpecification
InputRated voltageT4 series: Three phase 380v, ±15%
Frequency S/T2 series: Three/single phase 220V, ±15%
50/60Hz  ±5%
OutputVoltageT4 series: Three phase 0-380V
FrequencyS/T2 series: Three phase 0~220v
0-400Hz
Overload ability150% rated current for 30s; 180% rated current for 1s;
DissipationCooling type Forced Cooling
Temperature protection Heatsink temperature >85℃ trip protection against overheat
Fan controlHeatsink temperature> 50℃, fan forced operation, frequency inverter continue work
ControlControl modeOpen-loop vector control, V/F control
PerformanceStart torqueOpen-loop vector control: 0.5Hz 180%; 
VF control: 0.5Hz 150%
Speed rangeOpen-loop vector control:1:150; 
VF control:1:100
Speed control precisionOpen-loop vector control: ±0.2%; 
VF control:±0.5%
FunctionChannel of operation commandKeyboard control,terminal control,communication control
Start modeDirect start, DC injection braking before start, speed tracking before start
DC injection brakingStart DC injection braking, stop DC injection braking
Dynamic brakingBuilt-in braking unit
Frequency source choiceKeyboard digital frequency setting, analog AVI setting
PID control setting, telecommunications setting
Frequency resolutionKeypad setting:0.01Hz; Analog setting: 0.1%
Carrier frequency1Khz~12Khz,
Acc/Dec time0.1~6000.0s or 0.01~600.00s
SignalAnalog inputAVI:0~10V
ACI:4~20mA 
Keyboard potentiometer input: 0~10V
Analog outputAFM:0~10V or 0~20mA, Select through JP1 jumper
Digital inputA total of 28 kinds of function could be selected from S0 ~S5.
Digital output1 channel open collector output(MO1-MCM)
1 channel relay output( TA-TC normally open, TB-TC normally closed;
Communication PortCommunication protocolBased on RS485 hardware, support standard MODBUS protocol. 
Display FunctionsFour digital tube displayCan monitor the operation state of frequency inverter flexibly and conveniently.
Installation                                HumidityLess than 90%RH
condensation
VibrationLess than0.6G
Elevation0~1000m, reduce the rated specification 10% when lift 1000m for each. 
Storage temperature-20~60℃          
StructureDefend degreeIP20

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Q:What is the principle and implementation of the inverter?
AC-DC is relatively simple We know that the diode has a one-way conductivity You can use this feature of the diode into a bridge So that the other end is always flowing into the other end is always out of the way it gets the voltage sinusoidal change of the DC If the need for smooth DC also need to be rectified Simple method is to connect a capacitor
Q:65w adapter and 90w laptop power adapter What is the difference?
In general, notebooks have to use power consumption is to decide whether to use 65W or 90W adapter power supply, but not to say that 90W must not use the 65W power supply, but his power is not reached, it is possible that the machine is using some of the features Can not start, for example, external equipment, power supply, if the original request is 90W power supply, but you are using the 65W power supply, external equipment can not work properly. But some cases do not need external equipment, so choose a small 65W power supply is very convenient
Q:What is the common COM point of the PLC and the inverter? Is it positive?
Generally refers to the common, and most of the negative
Q:Ordinary 4-pole motor Under the control of the inverter, the higher the speed, the higher the power or the slower the power
The original you are the ordinary motor ah, this ordinary motor can not afford too high frequency. Often at high frequencies or low frequency work will burn the motor. The higher the speed, the current will increase, the lower the speed, the current will be reduced. Its power is not much change. You still with a special frequency control motor it. Frequency conversion motor is a special design, the use of frequency converter for the drive power, the motor and inverter electromechanical integrated frequency control system, so as to achieve low frequency constant torque operation and high frequency constant torque operation. This motor has good speed performance and significant energy saving effect
Q:My laptop can not use the power adapter, and can only use the battery, how is it ah,
Depending on your question may be the problem that the laptop's internal lines may be short-circuited 1, you can go to the video online to find the same type of machine disassemble video and then repair their own 2, get to the maintenance of the place to get on nothing
Q:Variable frequency pump pressure in the very low flow instability, why?
From the performance curve, the flow becomes smaller, the combination of pressure and frequency adjustment flow will only stabilize the flow at a small value, the pressure will be reduced, because the work point will move down.
Q:Pump frequency converter instantaneous restart and restart the problem
Speed tracking start. The specific to ask you to drive the inverter that guy. He earned your money there is a need for technical support
Q:Jd1a-40 motor speed controller and how to connect the motor
Speed ​​control motor wiring method: 3.4.5 is the terminal of the tachogenerator (U / V / W) from the right-to-left order of 1.2 for the excitation coil (F1 / F2) terminal, from the extended end of the speed motor (electromagnetic clutch) Master 7 plugs on the air plugs (governor): terminal 1.2 for the 220v input, 3.4 on the speed of the motor on the excitation coil, 5.6.7 speed motor on the tachogenerator. Motor speed control method: The speed regulating motor is to change the speed of the motor by using the series, voltage, current, frequency and so on of the motor to make the thyristor voltage regulation method the best.
Q:Which machines are used for the frequency converter
Frequency converter is widely used in the speed regulation of AC motor.Varameter speed control technology is an important development direction of modern power transmission technology, with the development of power electronics technology, AC frequency conversion technology from theory to practice gradually mature. Inverter not only smooth speed, large range, high efficiency, start current is small, smooth operation, and energy saving effect is obvious. Therefore, the exchange frequency control has gradually replaced the traditional traditional slip speed, variable speed control, DC speed control system, more and more widely used in metallurgy, textile, printing and dyeing, smoke machine production lines and buildings, Water supply, air conditioning and other fields.
Q:Can the four motors be tuned to 2900 rpm?
You have to look at what is the load, and look at the motor bearing can not bear 2900 turn, if the line, then under normal circumstances are possible. Only to the speed up to the motor rated speed above, the motor output torque is reduced.
We are a professional inverter manufacturer integrating R&D, production and sales. With an experienced R&D and production team and sophisticated production lines, our company has become a domestic first-class inverter manufacturer by virtue of advanced technology, excellent quality, scientific management and perfect service

1. Manufacturer Overview

Location Zibo, China
Year Established 2004
Annual Output Value Below US$1 Million
Main Markets Middle-East America; Mid East; Northern Europ; Africa; Southeast Asia
Company Certifications CE;ISO

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Qingdao
Export Percentage 1% - 10%
No.of Employees in Trade Department 500-999 People
Language Spoken: English; Chinese
b)Factory Information  
Factory Size: Above 50,000 square meters
No. of Production Lines Above 8
Contract Manufacturing
Product Price Range High; Average