The selection of the speed control mode of the universal inverter - Senland

First, according to the classification and selection of inverters 1. Inverters can be divided into general-purpose inverters and special inverters. 2. General-purpose inverters are mainly used in: general fan pumps (referring to inverters that only drag a single fan or pump) loads, mechanical loads, and loads requiring high overloads.

Input rated voltage, frequency 3 phase: 380V, 50/60Hz allowable scale Voltage: 320-420V; Voltage unbalance: <3%; Frequency: 47 - 63 Hz Output output voltage 3 phases, 0V - input voltage, error less than 5% Output frequency scale ...

The wiring interval between the motor and the inverter is too long, causing the new motor to catch fire Burn two new motors in a row! The output current and voltage of the inverter are balanced, the input voltage is balanced, the current is unstable, the fluctuation is 20%-50%, the inverter is burned off by a short circuit between 35Hz turns, the grid voltage is very stable, 720V, ...

The method of judging the damage of a power element in the rectifier part is to manipulate the single conductivity of the rectifier element, and the positive and negative resistance values should not be consistent when the static value is general, and the specific method is as follows: The three-phase bridge rectifier of the rectifier part may be two...

When the peripheral equipment and the inverter share the same power supply, the disturbance generated by the inverter is transmitted against the power line, which will cause other equipment in the same system to malfunction. The following methods can be adopted: (1) The input device of the inverter is equipped with an EMI filter or a ferrite common-mode filter (magnetic ring) ...

1.HG1000 high-performance light-load intelligent inverter, the most cost-effective, the new series is widely used in medicine, food, packaging, cable, printing and dyeing, washing, centrifuge, dehydrator, sewage treatment, HVAC, constant pressure water supply, constant temperature control, flow control and other industries, such as fans and pumps, ...

Due to the heavy rain and humidity in some areas recently, in order to avoid long-term power failure and the impact of wetting on the inverter, the following points can be used as various precautions before customers resume production: 1. Look inside the electrical cabinet, e.g. ...

1. Control method: i.e. speed control, rotation control, PID control, or other methods. After the control method is adopted, it is generally necessary to carry out static or dynamic identification according to the control accuracy. 2. Minimum operating frequency: That is, the minimum speed of the motor operation, the motor at low speed ...

(1) Brake usage rate ED% Brake usage rate ED%, that is, the brake usage rate in the clarification book ED%. The brake utilization rate ED% is said to be the deceleration time T1 divided by the deceleration cycle T2, and the brake utilization rate is mainly to allow the braking unit and the brake resistance to have sufficient time to dissipate ...

1. Incoming line maintenance Incoming maintenance is the maintenance of the user's inlet end and inverter, including lightning protection maintenance, grounding maintenance, phase loss maintenance, inverted phase maintenance, unbalance maintenance, overvoltage maintenance, transformer maintenance and so on. These maintenance devices are generally installed at the input of the inverter ...

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 ...

1. Cooling fan As a prerequisite to ensure the normal operation of the inverter, efficient and fast in-line cooling fans have become an indispensable conversion configuration of the inverter. Because of the wear of the internal bearings of the cooling fan and the reduction of the grease function in the process of application, the cooling of the fan.

From September 15th to 19th, the 22nd China International Industry Fair was held at the National Convention and Exhibition Center (Shanghai). As the first national industrial exhibition held under the normalization of epidemic prevention and control this year, the theme of this expo is "Intelligence, Interconnection: Enabling the New Development of Industries".

Investigation of the function of the inverter system Before debugging the inverter, it is necessary to carefully read the instruction manual and related information of the inverter to be debugged to understand the use environment and precautions. Especially before the inverter is energized, it is necessary to carefully investigate and check whether the inverter has obvious problems.

From October 28th to 29th, the "First National Tailings Engineering and Comprehensive Utilization Skills Seminar" sponsored by the China Nonferrous Metals Society was successfully held in Dexing City, Jiangxi Province. From China Nonferrous Metals Society, China ENFI, Jiangxi Copper, Beijing Institute of Mining and Metallurgy, University of Science and Technology Beijing and other countries...

If the drive has a built-in braking unit and additional braking resistors, it is important to pay attention to the correct wiring of the braking resistors. The braking resistor should be connected between the P terminal and the DB terminal, but not between the P terminal and the N terminal, otherwise the three-phase rectifier bridge will operate at full load when it is not running, resulting in the equipment can not be ...

The general voltage in industry is 0... 5(10)V or current 0(4)... 20mA is used as an analog signal transmission method, and it is also a method often used by program control machines. So what is the difference between the transmission method of voltage and current, and when to choose what method, the following will be briefly introduced.

When various factory equipment uses frequency conversion speed regulation, harmonic disturbances will be generated on the power supply side and motor side of the inverter (VFD), which will cause electromagnetic disturbance to the power supply network and other electrical equipment near the VFD. In addition, in order to ensure the long-term reliable operation of the VFD, the wiring of the VFD is very important. ...

Recently, it is expected that Sunland will successfully participate in the 8th Guangxi World Sugar Industry Skills and Equipment Expo with excellent inverter products. According to the expected Sunland company leakage, the exhibition of the World Sugar Industry Skills and Equipment Expo, throughout the exhibition to domestic equipment manufacturers, there is no lack of foreign outstanding enterprises, exhibitors ...

On April 15, 2011, the "Century Tour of China's Automation Industry (CAIE2011)" was held in Beijing, and Sunland inverter was once again re-elected as "China's well-known brand of domestic inverter". Dr. Chen Bin, President of Continental Hope Group and Chairman of Hope Sunland Technology Co., Ltd., personally ...