How do I initialize parameters?

With the increasing shortage of water resources, the requirements of water supply enterprises for the metering performance of water meters are gradually increasing. In order to meet the measurement requirements of the water supply industry, various metering instruments have been continuously improved, from the traditional mechanical water meter to the electronic water meter. In recent years, electronic technology, computer technology and network communication technology ...

Fujifilm ultrasonic flowmeter probe installation method and orientation. There are generally two types of probe mounting: the V method and the Z method, and experience has shown that the V method has a higher measurement accuracy than the Z method without affecting the signal reception. Since the V-method probe is installed for precise positioning, the measurement error mainly comes from the flow regime and ...

Fujifilm ultrasonic flowmeter is a non-contact flowmeter that has only been applied with the rapid development of integrated circuit technology in the past ten years, which is suitable for measuring fluids that are not easy to contact and observe, as well as large pipe diameter flows. Together with the water level gauge, it forms an open channel flow meter for flow measurement of open water ...

The signal of the catalyst feed control valve of a company's DCS system (distributed control system) intermittently appears OOP (output signal line break) alarm, and the control valve is fully opened instantly, resulting in abnormal fluctuations in catalyst flow, which seriously affects the safe and stable operation of the device. Fault cause analysis and treatment ...

In the field, the interference of the frequency converter is more frequent and more serious, and even causes the control system to be unable to be put into use. The operating principle of the inverter is destined to produce strong electromagnetic interference. The inverter includes a rectifier circuit and an inverter circuit, and the input alternating current passes through the rectifier circuit and the flat wave.

The cause of the leakage problem We all know that the three-phase stator winding of the motor flows through the current to produce a rotating magnetic field, according to the principle of magnetoelectric induction, the shell of the motor will produce an induced electromotive force, the size of this electromotive force depends on the size of the switching frequency of the inverter IGBT, due to the high ...

Fuji Electric Corporation (Headquarters: Shinagawa-ku, Tokyo, President: Tsuhiro Kitazawa) is pleased to announce that it has started mass production of the HPnC*2, a large-capacity IGBT*1 module for the seventh-generation X-Series, for the railway market. 1. Background In recent years, in view of the prevention of global warming, the railway ...

Fuji Electric Corporation (hereinafter referred to as "FE"), headquartered in Tokyo, Japan, under the leadership of President Mitsuhiro Kitazawa, is pleased to announce that it has established development goals*1 aimed at achieving a sustainable society, as well as a new policy called Environmental Vision 2050. *1: Sustainability Goals...

When we are repairing the inverter, we often encounter the inverter that triggers the overvoltage protection, at this time, I often wonder, can the overvoltage protection measures be different because of the overvoltage? (1) For the interrupting overvoltage of the phase-shifting transformer, the resistor-capacitance absorption network and oxygen ...

In 2019, China produced a total of 2786968 sets of test and analysis instruments, compared with 1971477 sets/sets in 2018, and the product demand and effective supply have jumped. In 2019, China's test analysis instrument profession completed the main business income of 31.387 billion yuan, and the proportion of revenue in the instrumentation industry ...

In the summer, in terms of the inverter that is indispensable for equipment control and speed regulation, the scorching weather is the hard injury of the inverter's heating. A large number of existing studies and practices show that the failure rate of the inverter will increase with the increase of temperature, the service life will decrease with the increase of temperature, and the ambient temperature will rise.

Fuji Electric has set forth its management philosophy of "Contributing to a Rich Society, Challenging the Limits of Creativity, and Developing in Harmony with the Natural Environment," and one of the pillars of its management policy is to contribute to the sustainable development of society through energy and environmental businesses. This article will focus on the energy sector ...

Fuji Electric Corporation (President: Tsuhiro Kitazawa, Head Office: Shinagawa-ku, Tokyo) is pleased to announce that it has completed a major upgrade of its FRENIC-MEGA series of general-purpose inverters in order to improve power at its production sites. ※Echo characteristics: output signal ...

Fuji Electric Corporation (headquartered in Tokyo, Japan, President Mitsuhiro Kitazawa) is pleased to announce that the company has expanded its 7th generation X-Series IGBT module product line*¹ to target the massive wind power market and has begun sample shipments in the 1,700 volt voltage class. *1: Insulated Gate Dual ...

The source of AC converter interference comes from interference from the external power grid. Harmonic interference in the power grid mainly interferes with the frequency converter through the power supply of the frequency converter. There are a large number of harmonic sources in the power grid, such as various rectifier equipment, AC and DC interchange equipment, electronic voltage adjustment equipment, nonlinear loads and lighting equipment.

With the rapid development of China's industrial production, the application range of electrical equipment is becoming more and more extensive, in order to improve the overall performance of electrical equipment, the use of frequency conversion energy-saving technology has a good effect. Frequency conversion technology can not only improve the operating efficiency of electrical equipment, but also reduce the operating loss of equipment. The following article ...

In the process of motor starting (acceleration), the motor should not only bear the load torque of steady speed operation, but also bear the acceleration torque, if the production machinery has no special requirements for the starting (acceleration) time, the starting (acceleration) time can be appropriately extended to avoid the peak current. If the production machinery is ...

Fujifilm portable ultrasonic flowmeter is used to check the flow rate at the outlet of a water pump in the field Error analysis in the flow measurement process Check for abnormal readings from the in-line flow meter Avoid process interruptions and the background of more expensive tube opening costs Waterworks are mainly used to treat water, and generally have the following processes.

The people are the foundation of the country, the valley is the life of the people, diligence and thrift are the fine traditions of the Chinese nation, and food security is an important foundation for national security. At present, the security situation at home and abroad is complex, and the sudden outbreak of the epidemic has caused multiple challenges to global food security. October 16, 20201 is World Food Day.

The inverter is a device that converts the power supply (50Hz or 60Hz) into AC power supply of various frequencies to realize the variable speed operation of the motor, in which the control circuit completes the control of the main circuit, the rectifier circuit converts the AC power into direct current, and the DC intermediate circuit carries out the output of the rectifier circuit.