Frequency Inverter Single-phase 200V class 0.37KW

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Technical specifications

Table 2.3: Technical Parameters of QD200 Series Frequency Inverters





Rated voltage and frequency

Single-phase 200V class:  200V-240V,50Hz/60Hz

3-phase 400V class:  380V-480V , 50Hz/60Hz

Allowable value of change

Voltage: 380V-15% ~ 480V+10%;  Frequency: ±15%

Main output

Output voltage

Maximum output voltage equals to input voltage

Output frequency

0.5 Hz to 400 Hz

Overload capacity

150% of rated output current for 60s, 200% of rated output current for 2s

Control performance

Modulation mode

3-phase PWM, 2-phase PWM

Control mode

V/f control for constant torque, V/f control for quadratic load, vector control without PG (open loop control),Energy-saving

Setting method of run command

Outer terminal, keyboard panel or serial communication

Setting method of speed command

Analog setting, keyboard, serial communication, UP/DOWN speed setting from external terminal

Speed setting resolution

Keyboard: 0.1 Hz

Analog setting: 0.05/50Hz (10bit)

Speed control precision

V/f control:±2%

vector control without PG (open loop control): ±0.2%

Speed control range

V/f control 1:40

vector control without PG (open loop control)  1:200

Acceleration and Deceleration



switching frequency

1.5 kHz ~ 12 kHz, according to junction temperature automatically reduce the switching frequency

Analog input


2 ways: AI1、AI2


DC voltage or DC current

Maximum input range

AI1: 0 to 5VDC, 0 to 10VDC, 0/4 to 20mA DC receivable

AI2: 0 to 10VDC or PTC probe input receivable

Analog output


1 way: AO1


DC voltage or DC current

Maximum input range

Voltage output: 0 to 10V, Current output: 0/4 to 20mA

logic input




note:2 virtual logic input, capable of configuring AI1 and AI2 into logic input port (positive logic or negative logic)


Source or Sink

Maximum input range




logic output


0.75kW-11kW: pulse signal output (LO-CLO)、relay output 1(T1A、T1B、T1C

15kW-500kW:pulse signal output(LO-CLO)、relay output 1、2(T1A-T1B-T1C、T2A-T2B-T2C

pulse signal output

OC,output frequencycurrentoutput、ect other function

relay output

RA-RB-RC, including a NO contact and a NC contact

Maximum switch capacity:

T1A,T1B: 3A at 250VAC, or 4A at 30VDC

T2A,T2B: 2A at 250VAC or 30VDC

Serial communication interface

RS485 interface supports Modbus protocol.


4-digit LED digital display

For display of frequency setting, output frequency, fault code and parameter setting etc.



Development of VSC200 series frequency inverters follows strict international standards and relevant recommended IEC and EN standards for control devices, especially IEC/EN61800-5-1 and IEC/EN61800-3.


Derating unnecessary when altitude is 1000m or below (Derating necessary at altitude higher than 1000m)

Ambient environment

0.75kW-11kW: Reliable operation at -10 ~ 50°C without derating. When top protective cover is taken off, the environment temperature can be as high as +50 °C. Above +50 °C, the current drops by 2.2% for each rise of 1 °C in temperature. 15kW-500kW: Reliable operation at -10 ~ 40°C without derating.

Storage: -25 ~ 70°C


No condensed water or drip at 5 ~ 95%, In accordance with IEC60068-2-3

Impact strength

15gn for continuous 11ms, In accordance with IEC/EN60068-2-27

Maximum antipollution capacity

Class 2, in accordance with IEC/EN61800-5-1


Protection level

Top: IP41 (without removing the protective top cover). Other parts: IP20

Cooling Method

Forced Air cooling

Installation method

Wall mounted

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Q:Laptop adapter
The interface of the second adapter is the same as the first one And although the two numbers are not the same but the number of V on the line is the same as the interface
Q:Inverter problem
(0 ~ 20mA), but the main input / output is completely isolated, than the output of the inverter simulation of the output of the analog output The amount of signal impact resistance, anti-interference ability.
Q:My laptop can not use the power adapter, and can only use the battery, how is it ah,
I have encountered the same problem, plug in the adapter, or use the battery power, the battery alarm, not the battery charge, the power adapter can not be used. But the power can charge the battery. If the power adapter alone, one will automatically shut down. Measure the adapter voltage normally. And then to get the computer city maintenance department, gymnastics, it is a simple question, the original power line in the circuit board on the solder joints are loose, that is, Weld, resulting in insufficient current, no wonder, off the machine can charge, boot can not charge, It shuts down. Spent 100 yuan. Business really black. I saw the repair. On the welding a few times OK. No wonder, once I suddenly shot about, the adapter can be used. Later, how to shoot not work. However, although spent 100, but my computer's heat silicone grease for the whole, the computer CPU temperature is not so high before. The beginning of the maintenance staff said that the power management chip may be broken, if the bad to more than 100, then, no bad, just contact the problem, welding also received me 100, really depressed. In fact, you can say good, if the contact problem, certainly below 100.
Q:What is the difference when using inverter frequency conversion ordinary motor and variable frequency inverter motor
First of all you have to understand the difference between variable frequency motor and ordinary asynchronous motor. 1, inverter motor cooling fan is not connected with the motor spindle, is independent, the fan rotation from the motor speed, to ensure that the motor cooling.
Q:ASUS power adapter Acer can use it
See whether the power adapter is suitable for notebook use, the following three conditions for reference: 1. The output voltage of the adapter is the same as that of the notebook.
Q:Master Hello a machine requires 500 speed matching 6-pole motor frequency converter transferred to about 28HZ
If the machine needs the same speed, constant 500r / min This can be directly with the motor, remove the inverter, but also save costs, while the motor at 50Hz, the maximum power point of rated power. Output torque is the most stable point. The pulley diameter becomes smaller and the reduction ratio increases, and the torque required by the motor becomes smaller, which is advantageous for the motor. 960/500 = 1.92, that is to say the motor pulley compared to the original tune less 1.92 times
Q:Can different brands of laptop power adapters be generic?
Power adapter can not use, the key to see two factors. First, the interface must first be the same interface or can not use. Second, the output current, the output current must be strictly consistent, otherwise it would be very dangerous, the laptop overload of the current is very fragile. The final output voltage I personally think can have a difference of type 5V. Because the battery on the voltage requirements up and down can have 5V floating. I have also used a high 5V adapter, has been no problem, but this is just my personal view. Strictly the same as the best. Oh, for reference only! Since you can plug in the normal use, indicating that the interface is consistent, and the output voltage and current are the same. Then I can responsibly tell you, rest assured to use it, there will be no problem.
Q:Laptop power adapter leakage
You feel, or do not feel is to take the amount of pen? If the feeling after it, then for a, if the amount of pen, then hand touched, it should not be bright. That is a induction, is Virtual electricity, it does not matter.
Q:Oil-free vertical vacuum pump why a little negative pressure inverter on the torque limit
and then use the inverter into three-phase AC, 380 volts almost, Can only use the transformer rose to 380 volts.
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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