7.5kw 380v 3 phase variable frequency drive ac motor controller

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Product Description:


2.37kw variable frequency drive 
3.MOQ:1 set 
4.Best price and quality 
5.Quick delivery time 

7.5kw 380v 3 phase variable frequency drive ac motor controller

Technical Specification





Rated voltage

T4 series: Three phase 380v, ±15%


50/60Hz ±5%



Three phase 0-380V



Overload ability

Type G: 150% rated current for 1 minute, 180% rated current for 2 second;

Type P: 120% rated current for 1 minute, 150% rated current for 2 second.

Heat Dissipation

Cooling type

Forced Cooling

Temperature protection

Heatsink temperature >85degree trip protection against overheat

Fan control

Heatsink temperature> 50degree, fan forced operation, frequency inverter continue work



Control mode

Open-loop vector control, V/F control, Torque Control

Start torque

Open-loop vector control: 0.5Hz 180%;

VF control:0.5Hz 150%

Speed range

Open-loop vector control: 1:200;

VF control:1:100

Speed control precision

Open-loop vector control: ±0.2%;

VF control:±0.5%

Torque control precision

Open-loop vector control:  ±5%

Torque response time

Open-loop vector control: <20ms< span="">


Channel of operation command

Keyboard control,terminal control,communication control

Start mode

Direct start, DC injection braking before start, speed tracking before start

DC injection braking

Start DC injection braking, stop DC injection braking

Dynamic braking

Built-in braking unit < = 11kw, get external braking unit>15kw

Frequency source choice

Keyboard digital frequency setting, analog V1 setting, analog V2 setting, Keyboard potentiometers setting, Multiple speed operation setting,

PID control setting, telecommunications setting, PLC program operation setting, HDI High Speed Pulse setting

Main and auxiliary frequency combination set

Just main frequency setting, just auxiliary frequency setting, QUICK/JOG or terminal switching selection, main frequency + auxiliary frequency, main frequency - auxiliary frequency, maximum, minimum, could realize

Frequency overlay and fine adjustment function

Frequency resolution

Keypad setting:0.01Hz; Analog setting: 0.1%

Carrier frequency

0.5Khz~15.0Khz, both PWM mode could be chosen

Acc/Dec time


Multiple VF curve

Linear V/F curve, 2.0 times power drop torque V/F curve, custom V/F percentage (can realize manual energy saving control), multipoint VF curve.

Built-in PID

Built-in PID controller, apply to process control occasion such as water or gas supply. Meanwhile the sleep wake up function could save energy to the great extent possible.

Simple PLC operation

16 segment goal setting, frequency or mode of percentage setting could be chosen, each segment of operation time and direction could be set separately, and realize timing stop function.

Common function

Speed tracking, Cut-off restart, fault recovery, Automatic torque promotion, the motor’s parameters auto-learning, Pendulum frequency operation, hopping frequency, UP/DOWN control, AVR, Over-voltage stalling protection,

rapid current-limiting, Instant power down and drop frequency operation




Analog input


V2:4~20mA or 0~10V, Select through JP2 jumper

Keyboard potentiometer input: 0~5V

Analog output

FM1:0~10V or 0~20mA, Select through JP9 jumper

FM2:0~10V or 0~20mA, Select through JP10 jumper. Need the support of SC-EXT1-IO expansion cards

Digital input

Standard configuration S1~S6, can expand S7~S10 through SC-EXT3-S expansion cards. A total of 30 kinds of function could be selected.

Digital output

Standard configuration 2 channel including SP1, SP2 electrode output;

1 channel relay output T1;

Expanding 4 channel relay output T2~T5 through SC-EXT2-R expansion cards.

High-speed pulse input

HDI: 0~50.0Khz, support by expansion cards SC-EXT1-IO

High-speed pulse output

HDO: 0~50.0Khz, support by expansion cards SC-EXT1-IO

Communication Port

Communication protocol

Based on RS485 hardware, support standard MODBUS protocol, should match expansion cards SC-EXT1-IO

Expansion Cards

3 type expansion cards

Standard expansion cards SC-EXT1-IO, Relay expansion cards SC-EXT2-R (can realize one drives 2 function), Multifunctional input expansion card SC-EXT3-S, refer to the explanation in Appendix.

Display Functions

Five digital tube display

Can monitor the operation state of frequency inverter flexibly and conveniently; can set normal monitoring parameters separately when operation and stop.

Protection Function

25 kinds of protection functions

Including over-voltage, over-current, overheat, overload, under-voltage, short circuit, ground fault, input and output default phase, protect the frequency inverter running reliably all-round.




Ambient temperature

-10degree~+40degree(ambient temperature is within 40degree~50degree, derating use is required), not allow to contact direct sunlight.


Less than 90%RH, without condensation

Application environment

Non-corrosive, flammable, explosive, dust absorbent material, all kinds of lint does not accumulate.


Less than0.6G


0~1000m, reduce the rated specification 10% when lift 1000m for each.

Storage temperature




Factory Overview






Textiles, Plastics, Ceramics, Electronics, Numerical Controls, Foods Processing, Light Industry, And Pharmaceuticals. Oil, mining and other fields.



7.5kw 380v 3 phase variable frequency drive ac motor controller

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Q:The laptop's power adapter is too hot to do
Installed adapter heat should be no problem, I am now under the books, the fan mouth is very hot, the weather may be more and more hot it
Q:There is no inverter comes with simple PLC programming function
The PLC is programmed to handle digital and analog, the core of the entire control system. It can output the digital to the inverter, so that the inverter is reversing, you can output the analog to the inverter set speed, but also through the communication, direct control inverter
Q:Do you need to rectify before switching?
I used to do the frequency of the words to be rectified
Q:In the official website to buy ThinkPad notebook, to the power adapter?
Hello, generally there will be a power adapter with Kazakhstan, unless there is a special note bare metal
Q:Can the inverter be used to control the speed of the DC motor?
The inverter can be used to control the speed of the DC motor. Inverter control DC motor is to control the DC motor. Inverter is the application of frequency conversion technology and microelectronics technology to change the AC power frequency and effective voltage power control equipment. The frequency converter is usually used to control the AC motor. Inverter at work can change the AC power frequency and effective voltage, another point of view, is the inverter in the control output (injected into the controlled device) AC frequency, but also control the output of the effective power. A DC motor is a rotating electric machine that converts DC power into mechanical energy. DC motor coil in the current must be in accordance with certain changes (commutation) can be rotated, according to the principle of commutation DC motor can be divided into brush and brushless motor two categories.
Q:The laptop's power adapter is broken how much it costs
Buy a new, new price of dozens to one hundred. Notebook adapter, as long as the output current is greater than the old, the same voltage, with the brand can be interchangeable, Different brands of adapters to meet the above requirements, that is, insert the notebook connector is different, you can use scissors + tape,
Q:What is the difference between the electronic governor and the frequency converter on the motor speed regulation?
Electronic governor is the use of control thyristor conduction angle to change the motor supply voltage, the motor characteristics of the curve down to change the speed of asynchronous motor. Its characteristics are as follows: the motor speed adjustment range is small, low speed when the motor load capacity is poor, the speed decreases, the motor torque decreases, not applicable with constant load, when the speed is low, prone to stall phenomenon; Applicable to fan load. Inverter speed is to change the frequency of the motor to achieve the AC asynchronous motor speed adjustment, speed adjustment balance, the motor load characteristics do not change with the speed change, suitable for load adjustment and constant torque adjustment. Excellent performance, but the cost is higher.
Q:The inverter flat rate transferred to 29, on the submersible pump to burn the coil ?!
1. submersible pumps are generally the problem, far away from the reflection voltage, the pump insulation breakdown, in particular, to better pump. 2. Distance away, the inverter and pump connection thicker. 3. Then on the output filter.
Q:In the case of the inverter, why can not the normal operation after removing the gearbox? The motor is 4 pole.
If there is a load, it may be less than the torque. So it can not run.
Q:The inverter is running independently
. Main working circuit (1) Operation circuit: the external speed, torque and other instructions with the detection circuit current and voltage signal comparison operation, determine the inverter output voltage, frequency. (2) voltage and current detection circuit: isolation with the main circuit potential detection voltage, current and so on. (3) drive circuit: drive the main circuit device circuit. It is isolated from the control circuit to turn on and off the main circuit device. (4) speed detection circuit: mounted on the asynchronous motor shaft speed detector (tg, plg, etc.) signal for the speed signal into the operation loop, according to the command and operation can make the motor running at the command speed. (5) protection circuit: the detection of the main circuit voltage, current, etc., when the overload or over-voltage and other abnormalities, in order to prevent the inverter and asynchronous motor damage

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