(1) Problem--: Contact deviation Phenomenon 1: The direction of the finger does not coincide with the mouse arrow. Reason 1: After installing the driver, there is no vertical contact with the bullseye center when calibrating the alignment. Deal 1: Correct the position from the beginning. Phenomenon 2: Some districts ...

A kind of pressure reducing valve in instrumentation refers to a device used to control the pressure value. Pressure reducing valves are usually used in water-related categories, because from the perspective of the transmission medium, the transmission medium of the equipment is mainly water, but we all know that water is a thing that will ...

1. Shell current and rated current The size of the shell current is 100 (rated current 16 25 32 40 63 80 100) 250 (rated current 160 250 400 (rated current 250 400) 630 (rated current 630A.) ...

When the inverter is used to form an automatic control system for control, in many cases, PLC and inverter are used together, and how to correctly connect the PLC and inverter together has become the key to the success of the system. 1.PLC switch ...

1. Flexible planning for on-demand expansion Generally, the construction of data centers is not in one step, and the expansion of the next few years will be considered, and the UPS capacity is generally considered to be larger in the design.

1. Why can the rotation speed of the motor be changed freely? Motor rotation speed unit: r/min number of rotations per minute, can also be expressed as rpm. Example: 2-pole motor 50Hz 3000 [r/min] 4-pole motor 50Hz 1500 [r/min] Conclusion:...

a. Output frequency scale. The output frequency scale that can be controlled by the general inverter, the lowest starting frequency is generally 0.1Hz, and the highest frequency varies according to the functional indicators of the inverter, generally 400Hz, and some models are 650Hz. No matter how high the output frequency is, it depends on the scale of the high-frequency inverter. ...

1) Whether the ambient temperature is normal or not, it is required to be in the range of -10-+40 °C, and it is better to be about 25 °C. whether the humidity meets the requirements, and whether the ventilation and heat dissipation of doors and windows are outstanding; Whether the lower air inlet and upper air outlet of the inverter are dusty or blocked due to excessive dust. ...

In order for the inverter to operate normally, it must have two basic conditions, that is, the frequency signal and the operating signal, let's talk about the first condition, which is the frequency signal of the inverter. Our intention to use the inverter is to change the ...

1. After the inverter is repaired, the power number needs to be modified, don't forget it Generally, an inverter corresponds to a power number (also known as the number of horsepower), for example, a 75 kilowatt inverter is set under heavy load, and 100 kilowatts is set under light load. In this way, the customer will not use it to present ...

In terms of frequency converters: The abbreviated inverter can only regulate the speed of the communication motor, and the open-loop or closed-loop can be determined depending on the control method and the inverter, which is the traditional V/F control method. Now many of the frequency conversion has been set up by mathematical models, which will communicate electricity ...

There are two main differences between vector inverters and general-purpose inverters. One is high control accuracy, and the other is high output torque at low speed. Vector special inverter: The operating principle of the vector special inverter is to carry out inverter after rectification, ...

Inverter terminal blocks belong to a kind of connector, the variety is divided into single hole, double hole, socket, hook, etc., from the data point, copper silver plating, copper galvanized, copper, aluminum, iron, etc. Their effect is mainly to transmit electrical signals or conductive use, in the project, it is the station front engineering for the station after the project reserved for the connection ...

Don't worry about the damage of the frequency conversion, disassemble the machine after the discharge; It is indispensable to ask for a diagnosis and clarify the problem at the beginning of the test; Input and output PN junction, three-phase balance and then unshelling; Look at the nameplate before powering on, the wrong voltage will blow up; The bus has no electricity to see that it is safe, and the rectifier filter is wrong ...

The methods adopted usually are: selection, thermal insulation and heat tracing, protection (point inspection, sewage discharge) and so on. Selection method Choose the appearance of the type with insulation equipment. According to the category and use of the appearance and the geographical location of the proposed equipment, the insulation and antifreeze requirements of the appearance are proposed, and then submitted to the manufacturer for processing. ...

1. There are two ways to say the fundamental frequency: (1) The frequency corresponding to the maximum output voltage of the inverter is called the fundamental frequency; (2) When the output voltage of the inverter is equal to the additional voltage, the minimum output frequency is called the fundamental frequency. The fundamental frequency is expressed in fBA. ...

1. Accounting of inverter capacity when the load is continuously changed periodically In many cases, the load of the motor changes periodically. Obviously, in this case, picking the capacity of the inverter according to the minimum load will be overloaded, and it will be uneconomical to select according to the maximum load.

In the process of fast parking, because of the inertia, a lot of regenerative electric energy will occur, which will directly act on the intermediate DC part of the inverter, and if this part of the electric energy is not consumed, the inverter will be faulty or the inverter will be damaged. The braking resistor is used to dissipate this part of the electrical energy. ...

After the maintenance function of the inverter is caused by the operation of the problem, it will trip immediately, and the fault code will be displayed together, and the tripping alarm indication circuit of the peripheral inverter will send out an audible and visual alarm to remind the operator to clean up the problem in time. Inverter hopping ...

1. Industrial automation appearance and control system. This is generally referred to as PA, FA in foreign countries. PA is called process automation, and FA is called factory automation. The appearance and control system used in process automation and factory automation belong to this category, and some parts of the appearance of analytical instruments and electrical instruments also belong to the ...

1. The number of braking resistor boxes is roughly calculated as: motor power (KW)/11.2 (take the upper limit of the integer). 2. The selection of the power of the braking unit is generally (1-2) times the power of the inverter; 3. The function of braking resistor ...