1. Causes of overcurrent There are many reasons for the occurrence of overcurrent, including soft and hard problems. 1. Causes of soft failures When the acceleration or deceleration time in the inverter parameters is set too short, and the motor power is heavy, it means that in the acceleration, the inverter's ...

The inverter is a motor control (speed regulation) device that uses the on-off effect of power semiconductor devices to convert the power frequency power supply to another frequency. Composition 1: 1. Rectifier unit: convert the communication electricity with fixed operating frequency into DC ...

For the most popular electrical control equipment inverter (Variable-frequency Drive, VFD), as a precision electronic industrial control equipment, in order to run smoothly for a long time, we, as professional and technical personnel, need to be on the VFD device or before the operation.

At present, the domestic air compressor market takes the goal of energy saving, environmental protection and cost reduction as the primary demand, and the new products developed are very popular. However, economically speaking, it cannot completely replace the conventional screw air compressor with large area and large capacity in use. Therefore, the use of inverter technology to ...

First of all, we need to understand a truth, that is, many times the good and bad of things are relative. The variable frequency drive (VFD) is used as a power source to drive the operation of the motor, and its fundamental role is to regulate the speed. If the wiring is normal, the parameters are reasonable, and the load is not ...

In general, the long-distance operation of the frequency converter requires the following functions: 1) Long-distance setting, if the parameters only need to be set for the first time, and do not need to be adjusted during operation, then long-distance setting is not required. 2) Long-distance start-stop, long-distance start or stop inverter, and ...

If you want to make the inverter last a long time, you must seriously consider the problem of heat dissipation. Because the failure rate of the inverter increases exponentially with the increase of temperature, the service life decreases exponentially with the increase of temperature. A 10 degree increase in ambient temperature halves the service life of the inverter. Thus...

1) Operating temperature: The inverter is a high-power electronic component, which is simply affected by the operating temperature, and the general temperature requirement is 0 - 55. However, in order to ensure the safety and reliability of the operation, it is necessary to consider freeing up space when using, and it is best to control it below 40. The inverter generally requires the device to operate ...

1. The power supply voltage is low The solution is to preset the active voltage adjustment function of the inverter, so that when the frequency is low and the rated frequency is dry, the inverter has the function of active voltage stabilization, and if the output voltage is low, the inverter will actively increase the output voltage ...

1. Do a good job of moisture-proof operations, clean up water and oil stains on site, insist on the boring environment of electrical equipment, and pay attention to preventing the inverter from being exposed. 2. Do a good job of maintenance and maintenance, take advantage of the shutdown for maintenance, clean the frequency conversion dust, and clean the frequency conversion air duct; Tighten the frequency conversion cable joint to prevent loosening, ...

1. Select the inverter according to the load characteristics Second, when selecting the inverter, the actual motor current value should be used as the basis for the selection of the inverter, and the extra power of the motor can only be used as a reference. Secondly, it should be fully considered that the output of the inverter contains higher harmonics, which will form the power factor of the motor.

Natural heat dissipation methods are generally used for heat dissipation of small-capacity inverters, because their operating environment should be well ventilated and free of dust and floating objects. The drag targets of such inverters are mostly household air conditioners, CNC machine tools, etc., and the power is small. Still...

1. Install a reactor at the output of the inverter: This method is the most commonly used, but it should be noted that this method has a certain effect on shorter cables (less than 30 meters), but sometimes the effect is not ideal. 2. In the inverter ...

Before the asynchronous motor is equipped with an inverter, let's take a look at the three major types of mechanical equipment loads: 1. Constant torque load: such as conveyor belt and mixer; When the inverter drags the load of constant torque nature, the torque at low speed should be large enough, and the overload should be large enough. If you need ...

1. Whether it has perfect maintenance function There will be many problems in the production process of the equipment, and if you want to prevent accidents, the equipment must have a perfect maintenance function, so as to prevent the loss of the enterprise. Therefore, when buying an exhaust fan inverter, you need to understand the safety function of the equipment first.

1. Plan a special inverter room When the power of the inverter is large or the number is large, a special inverter room can be planned. The doors, windows and cable holes in the room need to be sealed to avoid dust ingress; It is necessary to plan air filtration equipment and circulation channels to adhere to the normal indoor air ...

How to distinguish where the inverter is wrong? Step 1: Static data checking 1. Check the inverter circuit The red watch rod is received to the P end, and the black watch rod is separated from U, V, and W, and there should be a resistance value of tens of ohms, and the resistance value base of each phase, the same, the opposite should be infinite.

1. The power-on trip or the main power terminal part of the inverter shows a spark. Detection method and discrimination: disconnect the power line, check whether the input terminal of the inverter is short-circuited, and check whether the DC side terminals P and N of the central circuit of the inverter are short-circuited. It may be due to a damaged rectifier or a central ...

1. Connect X (switching input) drive terminal to control the inverter start-stop/forward and reverse rotation; 2. Connect to the AI (analog input) terminal to control the frequency of the inverter (perhaps made into PID closed-loop control active conditioning frequency) 3. Other DO (switching output) is used for transmission ...

The digital signal processor is selected, and the work efficiency is higher A good quality two-phase electric fan inverter uses a digital signal processor, which can make the work efficiency higher, that is, it may take 3 hours to complete the work, but now it only takes 2 hours to be able to...

In order to ensure the safe, efficient and reliable operation of the inverter, the following keys should be grasped when using the inverter: 1) It is necessary to reliably ground the grounding terminal of the inverter, so as to effectively press the radio frequency disturbance and enhance the reliability of the system.