The square inverter has basic functions such as pressure regulation, frequency regulation, stabilization, speed regulation, etc. It applies modern science and technology. It is expensive but has good performance. The internal structure is complicated but simple to use.Apply to various fields, all kinds of power, various shapes, various volumes, various uses, etc.With the development of technology and the decrease in costs, the inverter will definitely be widely used.
Quartet inverter failure code
(1) OC alarm keyboard panel LCD shows: over -current during addition, reduction, constant speed.For a short -current OC alarm, the current detection circuit of the drive board is problematic, and the module may have been impacted (damaged). It may continue to fail after reset.: Excessive output leakage current caused by motor cables, excessive output leakage current caused by the critical section of the cable or loosening the load current caused by the increasing load of the cable damage.The 24V fan power supply of a small capacity (below 7.5G11) also causes OC3 alarm when the power supply is short circuit. At this time, the 24V fan power supply on the motherboard will be damaged, and other functions of the motherboard are normal.If the "1, OC2" alarm and cannot be reset or call the "OC3" alarm, it may be a problem with the motherboard; if you press the RUN key to display the "OC3" alarm, the driver board is broken.
Sifang inverter repair
Si -square inverter maintenance dynamic test: After the static test results are normal, dynamic testing can be performed, that is, the electric test machine.Before and after power -on, you must pay attention to the following points: 1. Before calling, you must confirm whether the input voltage is wrong. The 380V power supply will be connected to the 220V -class inverter (explosive capacitor, voltage resistance, module, etc.); 2. Check whether the connectors of the inverter are connected correctly, whether the connection is loose, and the abnormal connection may sometimes cause the inverter to fail.Preliminary conclusion of the fault and cause; 4. If the failure is not displayed, first check whether the parameter is abnormal, and after returning the parameters, start the frequency converter when the air load (does not connect the motor), and test the U, V, and W output of U, V, and W outputVoltage value.If there is a shortage of phase and the imbalance of the three -phase phase, the module or the drive board will fail.
Inverter inverter principle
The inverter is to convert the working frequency power supply (50Hz or 60Hz) into a AC power supply of various frequencies to achieve the equipment of the motors gearage operation. The control circuit completes the control of the main circuit.The circuit is filtered smoothly on the output of the rectifier circuit, and the inverter circuit will reflect the DC power into AC power.For inverter such as vector control inverters that require a large number of operations, sometimes a CPU and some corresponding circuits need to be calculated.The variable frequency speed adjustment is to achieve the purpose of adjusting the speed regulation by changing the frequency of power supply by motor stator winding.
Quartet inverter price table
The price table is shown in the figure below:
Quartet inverter instructions
Precautions for installation: 1. Prohibit the installation of square inverters on flammable or direct sunlight.2. Do not drop the foreign body into the inverter, otherwise there may be a danger of fire or injury.3. The installation environment temperature is within the range of minus ten degrees to 40 degrees.In the control box, the inverter should generally be installed in the upper part of the box, and strictly abide by the installation requirements in the product manual. It is absolutely not allowed to be installed at the bottom of the bottom of the inverter at the bottom of the inverter.

Related tags： Appliances