Valves are control components in fluid transportation systems, with functions such as cutoff, regulation, diversion, prevention of backflow, stabilization, diversion, or overflow pressure relief. Valves used in fluid control systems have a wide variety of varieties and specifications, from the simplest globe valves to various valves used in extremely complex self-control systems. Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media. It is commonly used on ships to control fluids such as compressed air, cooling water, hydraulic oil, etc. 1、 Classification of valves There are many types of valves, and there are multiple classification methods. They are generally divided into: 1. Cut off valves: mainly used to cut o...
High voltage frequency converters are commonly used in the industrial field, suitable for applications with high power and high voltage (usually exceeding 1kV). They can provide high output power and carrying capacity, suitable for driving large motors, generator sets, and other high-power equipment. The circuit design and control system of high-voltage frequency converters are usually more complex to meet the requirements of high voltage and high current. Low voltage frequency converters are suitable for applications with low voltage (usually below 1kV) and are widely used in household appliances, small mechanical equipment, air conditioning, etc. They typically provide lower output power and are suitable for speed regulation and control of low-power devices. Low voltage frequency converters are smaller, cheaper, and easier to operate and maintain ...
This time, we conducted in-depth discussions with Siemens on multiple key topics at our Fuqing factory. As a Siemens service provider, our company provides products and technical support in multiple product areas, including FA (factory automation), PA (process automation), GMC (general motion control), MTS (small and medium-sized drive systems), CRANE (crane control systems), MI (drive motors), etc. Whether it's fault repair, spare parts supply, or system upgrade and optimization, we have the ability to provide customers with efficient and accurate services. To ensure the efficiency and consistency of our services, we will optimize our service process strategies, improve service quality, and diversify our product and service needs, starting from the key concerns of our customers. As a company deeply rooted in the field of industrial control for many years, we are...
In PLC applications, it is not recommended to directly connect the alarm to the output terminal, especially in safety alarm and emergency handling situations. PLC output modules are divided into relay output type and transistor output type. The former is suitable for driving high-power loads, while the latter is not suitable. The working current and voltage of the alarm are relatively high, and direct connection may damage the PLC or cause safety issues. When using a relay output PLC, the alarm can be connected to the output terminal, but attention should be paid to independent power supply, reasonable control signal, reliable reset operation, and alarm safety performance. When designing an alarm system, appropriate solutions should be selected based on the PLC output type and load characteristics to ensure system reliability. In the app...