SVF300 Series High Performance vector control frequency inverter

SVF300 Series High Performance vector control frequency inverter

SVF300 series high Performance vector control frequency inverter is SEL Electrical developed the new type frequency inerter . General type and fan/pump type are in one model . 

  • Description
  • Inquiry

1. Main  Feature


SVF300 Series inverters are high performance open loop vector inverters for controlling asynchronous AC induction motors and permanent synchronous motors.

1. Output frequency :0-600Hz.
2. Multiple password protection mode
3. Remote control operation keypad, convenient for remote control.
4. V/F curve &multi-inflection point setting, flexible configuration .
5. Keyboard parameter copy function. easy to set the parameters for multi-inverters .
6. Wide industry application . to expand special function according to different industries.
7. Multiple hardware and software protection and optimized hardware for anti-interference technology.
8. Multi-step speed and wobble frequency running (external terminal 15 steps speed control).
9. Unique adaptive control technology . Auto current limiting and voltage limiting and under-voltage restrain .
10. Optimized external installation and internal structure and independent air flue design , fully enclosed electrical space design .
11. Output automatic voltage regulation function .(AVR),automatically adjust the output pulse width . to eliminate the  influence  of the grid change on load .
12. Built-in PID regulation function to facilitate the  realization of closed loop control of the temperature ,pressure and flow . and reduce the cost of the control system .
13. Standard MODBUS communication protocol . easy to achieve the communication between PLC,IPC and other industrial equipments.


2. Technical Indications



Item Description


Rated voltage& Frequency

Single /Three phase 220VAC . Three phase 380V.50Hz/60Hz

Allowable Voltage range

Voltage fluctuate range:-20%~+20%
Voltage unbalance rate:<3%;Frequency fluctuation:≤5%


Rated voltage

three phase 0~  input AC voltage



Overload capacity

Type G:150% 1minute,180% 1 second,200% transient protection
Type P:120% 1minute,150% 1 second,180% transient protection

Control Function

Modulation mode

Optimal space voltage vector PWM modulation

Control mode

Sensorless  vector control (SVC), V/F control . Torque control

Frequency accuracy

Digital setting: Max. Frequency ×±0.01%
Analog setting:Max. Frequency×±0.2%

Frequency resolution

Digital setting :0.01HZ;
Analog setting :Max. Frequency x0.1%.

Starting frequency


Torque lift

Automatic torque lift: To lift the torque automatically according to the output current.
Manual torque lift, Range: 0.1—30.0%

Slip compensation

Setting range:0~150%,The inverter output frequency can be auto-regulated within this range according to the motor load, so as to reduce the speed variation of the motor due to load fluctuation.


Minutes/Seconds can be selected as time unit .0.1~3600S can be set in sequence .

Carrier frequency


Jog function

Jog frequency range:0.01~600.00Hz,
Jog acceleration /deceleration time 0.1~3600.0S can be set.

V/F curve

1:linear curve;2:quadratic;3:user defined V/F curve

Control Function

Automatic energy-saving operation

Auto optimize V/F curve according to the load changes to realize the energy saving operation.

Auto voltage regulation (AVR)

When the network voltage changes, it can regulate PWM output automatically to maintain constant voltage.

Built-in PID

This can form a convenient closed-loop control system (CLCS)and is applicable to pressure control, flow control and other process control  .

Operation Function

Operating command

Operation panel control ,external terminal control and COM control

Frequency setting

Keypad potentiometer setting , operation panel▲▼setting,. external terminal UP/DOWN setting, analog voltage signal or external potentiometer setting , analog current signal setting .terminal combination setting ,485 COM setting and so on.

Input Signal

Forward/Reverse signal、multi-speed signal 、 fault signal 、
reset signal etc.

Output signal

Programmable relay、 open collector output 、 Fault  signal output.

Multi-function analog and digital output terminal

This can realize the output of frequency current and other physical quantity by output 0-10V or 0-20mA DC signal and 0-10KHz digital signal output.

Braking function

Dynamic braking

With an external braking resistor, the maximum braking torque may reach 100%.

DC Braking

This can be selected when the motor starts or stops with the action frequency of 0-20Hz,action current level of 0-100% and actuation time of 0-30sec., which can be set in sequence.

Other Function

Skip frequency、Jog function、 Counter 、Rotation speed tracking、 Momentary power loss restart 、Frequency upper/lower limiting、 Acceleration/ Deceleration mode can be adjusted 、Frequency meter and Voltmeter output 、Multi-speed/ program running 、Two wire mode/ three wire mode control 、Wobble frequency control、 Multi-function input terminal selection 、 Fault auto reset、RS485 serial communication .

Protection Function

Input phase loss protection、 Over current protection 、Overload protection、 Over voltage protection 、Under voltage protection、 Over heat protection ect.

LED display

Can display the real time running status of the inverter , monitor parameter .function parameter and fault code and other information of the inverter.

Matching parts

Braking assembly, remote keypads and wire connection , communication panel .


Place to be used

Indoor location free from direct exposure to sun light, high humidity or dew condensation, high levels of dust, corrosive gas, explosive gas, inflammable gas, oil mist, salt and etc


Below 1000 M

Ambient Temperature

-10 C to +45 C (Bare Machine: -10 C to+50 C)


20%-90% RH without dew condensation



Storage temperature



Protection  class


Cooling mode

Forced air cooling

Installation mode

Wall mounted or floor-type actuator

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