Failure analysis of Delta inverter VFD-VL series

(1) When the speed of the motor is controlled by the Delta inverter, the noise and temperature rise of the motor are higher than that of the frequency of the motor. When the motor is working at low speed, due to the low speed of the motor blades, the temperature rise of the motor becomes high.

After the inverter is installed, disconnect the output of the inverter, use the diode file of the digital meter to measure the input and output of the inverter before the power is not turned on, ensure that there is no short circuit, and then turn on the working power supply of the inverter.

1. Programmable manipulator AH series Delta's AH series modular controllers provide automation system solutions for high-end applications. The AH series adopts a comprehensive modular design, and on the basis of Delta's research and development skills, it has developed ...

Based on trend forces, the sales market of solar power generation in Taiwan was analyzed. In the first half of 2019, AUO ranked second, while third-ranked Canada Solar entered the top three for the first time. Compared with the previous year, the sales market in Taiwan, China in the first half of 2019 was in the total delivery of common decoration ...

In the case of low speed accuracy requirements or small load changes, the inverter can be selected. The U/f control method refers to the method of controlling the frequency and voltage of the inverter. The rotational speed change in this control method is done by changing the set value of the frequency. ...

1. When the device is installed, leave the place with high voltage and strong high-frequency noise to prevent disturbance. Prevent use in places where the following conditions occur: (a) Excessive dust and corrosive gases; (b) high humidity and very high radiation; （c） ...

1. Open-loop control There is no reverse connection between the controller and the controlled target, and the control is carried out in one direction. Strengths: Simple, stable and reliable. If the characteristics and parameter values of the components that make up the system are relatively stable, and the external disturbance is small, the open-loop control energy Enough...

Delta inverters still have a certain influence in the industry, but even if the reputation is good, it will inevitably show some failures. Let's take a look. ...

In general, factory motors are based on the additional speed values obtained at a given power frequency voltage (380 V, 50 Hz). If 380V is not reached under actual operating conditions, e.g. as long as 300V, 50 Hz, the voltage is significantly undervoltaged. Fundamentally, it cannot reach the extra rev value, due to the ...

1. What is a Delta inverter? Delta inverter is a device that converts the power supply (50Hz or 60Hz) into a communication power supply of various frequencies to realize the variable speed operation of the motor.

The inspection personnel should record the operation status, voltage and current values of the UPS every day, and deal with the problems in a timely manner. Check whether the traffic lights are working properly; Keep the outside of the battery clean; Check the operating status of the battery pack ...

There are many models of Delta's power supplies, and the currents and functions supported are also different, so how to choose? 　　VX Series Power Supplies. VX270: Active PFC270w, but 12v is still small and can only be used at low power. Active PFC and 12v output up to 276w at 300...

Delta's inverters should be thoroughly inspected for the first time or after long-term installation. The items and methods of inspection are as follows: 1) Check whether the Delta inverter is damaged, whether the metal parts are rusty, and whether there is frost. If there is frost and condensation, it should be dried for 4 hours (60°C) or ...

With the development of electronic semiconductor information technology, technologies such as the Internet of Things, big data, and cloud channels are showing a trend of a hundred flowers blooming, which also drives the rapid development of intelligent production. Intelligent production also puts forward new requirements for controllers: high speed, large capacity, miniaturization, networking...... In order to ...

What are the benefits of inverter power correction? Many brands of inverter power boards, driver boards, and motherboards can be universal, as long as the type, volume, and hardware are the same, and the desired power and voltage value can be obtained by correcting the manufacturer's parameters.

The inverter of Delta's brand A series locks the keypad to correct the parameters, forming that most of the parameters cannot be corrected, and the manual does not clearly explain how to unlock the keypad lock, press MODE and RESET together to display P256 (P256 does not explain what it means in the manual), press ENTER...

On February 10, CDP released its 2021 Supplier Engagement Rating; SER) As a result, Delta received the highest scores in key scoring items such as "Supply Chain Participation" (Note 1) and "Three Emissions in the Greenhouse Gas Field" (Note 2).

In the process of repairing the inverter, it is found that because of the back electromotive force in the stator winding, the electromotive force in the synchronous generator state and the self-induced electromotive force in the self-induced rotor, the current impact must have a negative impact on the motor, the inverter (Variable-frequency Drive, ...

There are two fundamental circuits for communicating with external signals: analog and digital: 1. 4-20mA current signal loop (imitation); 1 - 5V/0 - 5V voltage signal loop (imitation). 2. Switch signal circuit, inverter start and stop command, forward rotation command, etc.

1. Inverter element - rectifier Since it is difficult to change the frequency of the communication sine wave in the form of communication, the first operation of the inverter is to convert the waveform into direct current. To make it look like an AC, it is relatively easy to operate the DC. The most important component of all inverters is a ...