Open Loop Control Frequency Inverter

Open loop control frequency inverter 1. Open loop control frequency inverter. Open loop control frequency inverter is general frequency inverter with three kinds of control methods—V/F control, open-loop flux vector control, torque control. It has abundant parameter functions including pulse...
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Open loop control frequency inverter

1. Open loop control frequency inverter.

Open loop control frequency inverter is general frequency inverter with three kinds of control methods—V/F control, open-loop flux vector control, torque control. It has abundant parameter functions including pulse frequency setting, multi-step speed and simple PLC setting, PID setting; non-stop at momentary power failure, auto voltage regulation and so on.


2. Basic Parameters of Open loop control frequency inverter.

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3.Main features and application of the Open loop control frequency inverter.

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4. Main parameters of Open loop control frequency inverter.

I/O

Input

380V+/-15%   three phase    50/60Hz

Output

0~ 380V+/-15%, three phase      0-500Hz

Basic    functions

Max. frequency

500Hz

Carrier wave frequency

0.5kHz-16kHz, can be auto adjusted according to carrier.

Speed Control Accuracy

Digital setting:0.01H
     Analog setting:Max. frequency  times 0.025%

Control Mode

Senseless vector control(SVC)
     Flux vector control(FVC)
     V/F control

Starting Torque

0.5Hz/150%(SVC) ; 0Hz/180%(FVC)

Speed adjusting range

1:200(SVC)  1:1000(FVC)     1:50(V/F)

Speed control accuracy

±0.5%(SVC)  ±0.02%(FVC)

Torque control accuracy

±5%(FVC)

Overload Capability

150% rated current 60s,180% rated current 3s

Torque boost

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

V/F curve

Three types:liner; Multi-point type;  N times square, V/F    curve(1.2 times square, 1.4 times square,1.6    times square,1.8 times square,2 times square

V/F separation

Two types:full separation,half    separation

ACC./DEC. curve

Liner or S curve ACC./DCC. Mode; Four types ACC./DCC. Time;    ACC./DCC time range 0.0s-6500.0s.

DC brake

DC brake frequency:0.00Hz~Max.    frequency; Braking time: 0.0s-36.0s; Braking current:0.0%-100.0%

JOG control

JOG frequency range:0.00Hz-50.00Hz;    JOG ACC./DCC time 0.0s-6500.0s

Simple PLC,multi  step speed control

16 steps speed can be set by in built PLC or terminals.

In built PID

can realize close loop process control system

Automatic voltage regulation

can output constant voltage even grid voltage fluctuates.

Over voltage and over current control

automatic limitation to running voltage and current to avoid    frequent tripping

Fast limitation of current

To minimize over current faulty to make running smoothly.

Torque limitation

Excavator characteristics,torque limitation to avoid frequent tripping. Torque control can be realized in Vector control mode.

Optional function

safety detection to Peripherals

Safety detection to Peripherals when power on(such as grounding,    shortcut etc.)

COMMON DC BUS

Multi frequency inverters share DC common BUS.

QUICK key

five options: main menu, advanced menu,monitoring menu,checking menu, user define menu

MF.K key

Programmable key:commend channel switch/ Forward and Reverse running/JOG running

Textile swing control

Triangular wave frequency control function

Timing control

setting range 0H-65535H

Operation

Running command  giving

three channels:keypad giving,terminals giving,RS485 giving. All of which can be switched to each other.

Frequency source giving

digital giving, analog voltage giving, analog current giving, impulse giving, RS485 giving. All of which can be switched to each other.

Input terminals

Five digital inputs,one of which can be used as high speed impulse input, the Max. Frequency can reach 100kHz.  This can be extended to ten inputs and compatible.
     Source PNP or NPN input.
     two analog input terminals,one of them only can be used as voltage input, the other one can be used as voltage or current input( one voltage input terminal can be extended)

Output terminals

One high speed impulse output terminal (can be set into open circuit    collector), 0kHz~100kHz square wave output, can output setting frequency or outputting frequency.
     one digital output(can be extended into two)
     one Relay output(can be extended into two)
     one analog output(can be extended into two),0mA-20mA or 0v-10V selectable ,can output setting frequency or outputting frequency.

Virtue I/O

5 virtual DI,5 virtual DO

Keypad operation

LED display

to display parameters

Parameter copying

Parameter copying by LCD panel

Key  lock and Key function    selection

Key  lock and Key function selection

Protection function

motor shortcut detection,input output phase lost protection, over current protection, over voltage protection, low voltage protection, over heat protection, over load protection.

Accessories

multi function input and output extension cards,braking parts,telecommunication card,PG card,user programmable.

running environment

indoor avoid sunlight, avoid dust、erosion gas、flammable gas, oil mist、steam vapor、water drop、salt etc.

altitude

under 1000m

Environmental Temperature

-10℃ ~ +40℃. Deration above 40℃

Humidity

under 95%RH, no water condensation

vibration

under 5.9m/s(0.6g)

storage temperature

-20℃ ~ +60℃


5. Details of open loop control frequency inverter:

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6.Corner of Factory

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In order to make good use of open loop control frequency inverter and insure the user's safety, please read through the manual before installing or operating the FST-650 inverter.


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9. All Open loop control frequency inverter have to go through 4 step checks from raw material to delivery.


10. Open loop control frequency inverter in spinning frame application:

During the doffing of large, medium and small yarns, there is a clear difference in the change in tension. For the requirements of spinning frame equipment control, in the near future, the application of the spinning control system for vector control inverters can help the spinning frame to complete better roughing processes.


11.Open loop control frequency inverter Wirings diagram

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