The size of the contactor is selected by the type of contactor - LS produces electricity

1. Look: The normal operation of the motor has a great relationship with the surrounding environment. Therefore, during the daily inspection, check the water leakage and dripping conditions around the motor (which will cause the low insulation of the motor to form a breakdown and cause burnout), and check whether the peripheral of the motor affects its ventilation and heat dissipation ring.

1. The touch screen is controlled by PLC inverter 1. At present, the general control of the inverter needs to use PLC to communicate with the inverter, read the information of the inverter, and then the touch screen communicates with the PLC in order to complete the control of the inverter to start, stop, and monitor the operation of the inverter.

Control method: i.e. speed control, rotation control, PID control or other methods. After adopting the control method, it is generally necessary to carry out static or dynamic identification according to the control accuracy and requirements. Low operating frequency: that is, the small speed of the motor running, when the motor is running at low speed, its heat dissipation function ...

Power refers to the amount of work done by an object in a unit of time, i.e., power is a physical quantity that depicts how fast or slow work is done. The amount of work is constant, and the shorter the moment, the greater the power value. The formula for finding power is power = work/moment. Power is a physical quantity that characterizes the degree of work done fast or slow. Units made in the hour ...

First, the power supply problem 1. The power supply voltage is too high When the power supply voltage is too high, the motor back electromotive force, magnetic flux and magnetic flux density all increase. Since the magnitude of the iron loss is proportional to the square of the magnetic flux density, the iron loss increases, resulting in overheating of the core. And the increase in magnetic flux causes ...

1. It is often used in electric motors as control targets. 2. It is used to control power loads such as factory equipment, electric heaters, working machines and various power units. 3. It has the effect of low voltage release protection. 4. It is suitable for frequent operation and long-distance control, and is an automatic operation.

1. HW problem This problem may be a fault unique to LG-IG5 series inverters, and the main causes are as follows: (1) Damage to the cooling fan. Due to the use of environmental and other factors, the friction of the fan bearing is too large, causing the fan load to be too large and showing H ...

Driver: Under the premise of carrying out frequency conversion skills, the servo drive has carried out more advanced control skills and algorithm operations than general frequency conversion in the current ring, speed ring and azimuth ring inside the drive (the frequency converter does not have this ring), and it is much stronger than the traditional servo in terms of function.

Rated current of LS molded case circuit breaker: Now in the process of using molded case circuit breakers, it is necessary to understand the rated current of molded case circuit breakers, and the rated current of molded case circuit breakers generally has more than a dozen, mainly 16A, 25 A, 30A, and the high may reach 630A. ...

When LS PLC is put into operation, its operation process is generally divided into three stages: input sampling, user program fulfillment and output rewriting. The completion of these three phases is called a scan cycle. During the entire operation, the PLC's CPU repeatedly performs the ...

How LS Contactor Works: Generally, after the contactor coil is energized, the entire coil current will generate a magnetic field, which will make the core inside have electromagnetic attraction to attract the core, and let their communication contactor point action normally closed contact disconnect, or close, which ...

Before the asynchronous motor is equipped with an inverter, let's take a look at the three major types of mechanical equipment loads: 1. Constant torque load: such as conveyor belts and mixers; When the inverter drags a load of constant torque nature, the torque at low speed should be large enough and the overload capacity should be large enough. If you need ...

The selection of the inverter should be considered according to the type of controlled object, speed regulation scale, static speed accuracy, starting torque, etc., so that it is easy to use and economical together with the satisfaction of process and production requirements. 1. Inverter and the motor to be operated (1) The number of poles of the motor. General motor ...

When using an inverter, a leakage maintainer must not be used. This is a major principle of the use of frequency converters. Some users choose the corresponding leakage maintainer for the inverter when using the inverter. *The result is: the inverter moves together, the leakage maintainer acts, and the system foundation cannot be ...

(1) When the inverter is connected to the power grid of large-capacity power transformer (more than 500kVA), perhaps the same power transformer is connected with a thyristor converter without using a commutation reactor, or when there is a switching capacitor bank for power improvement in the same power grid, an AC reactor or DC reactor should be equipped.

The basic components of PLC for power production: 1. Memory 　　​ 　　The memory that registers the architecture software is called the architecture program memory. The memory that registers the application software is called the user program memory. 2. Power supply ...

The circuit breaker is a fundamental low-voltage electrical appliance, which has the function of overload, short circuit and undervoltage maintenance, and has the ability to maintain the line and power supply. Circuit breaker is an indispensable product in electrical safety. Due to different applications, there are molded case circuit breakers, frame circuit breakers, miniature circuit breakers, etc.

1. Active power - in the process of generating and transmitting alternating current energy, the part of energy used to convert into electromagnetic methods is called active power 2. Reactive power - in the process of AC electric energy generation and transmission, it is used for electromagnetic field AC in the circuit.

(1) This series is divided into two types: economic type and standard type, which can meet the requirements of different customers: Economical: 10/14/20/30 points (10/14 points with 2 built-in analog potentiometers), up to 70 points. Standard type: 20/30/40/60 point DR/DRT (2-axis position ...

Thermal Overload Relay GTH-22 GTH series: GTH-22, GTH-40, GTH-85, GTH-100, GTH-150, GTH-220, GTH-400、GTH-600、GTH-12M、GTH-12MH、GTH-12M、GTH-MH GTH series: GTH-22, GTH-40, GTH-85 ...