Inverter selection according to capacity matching - Senlan

(1) The harmonic current generated will directly cause the additional heating of the motor, so that the stator of the motor surpasses the additional temperature rise of the motor itself, so that the additional output capacity of the motor will be greatly reduced. (2) The current output of the inverter ...

The motor is able to rotate, but the operating current exceeds the rated value, which is called an overload. The fundamental reflection of overload is that although the current exceeds the rated value, the fluctuation of the excess is not large, and it generally does not constitute a large inrush current. 1. The main reason for overload (1) Excessive mechanical load ...

ER. The meaning of the OUE fault code is: overvoltage during standby. The possible reasons are: 1. DC bus voltage detection circuit failure; 2. The input voltage is abnormal or the power is lost during operation. It can detect whether the power supply voltage used by the inverter is normal, and in addition, it is necessary to check whether the power supply line of the inverter is ...

It is hoped that Sunland inverter is mainly used in three-phase asynchronous AC motor to control and adjust the motor speed. Sunland inverter is mainly composed of microprocessor, including rectification, filtering, inverter, brake, drive, detection, etc. In order to achieve the purpose of changing the power supply voltage, according to the actual needs of the motor...

There are many special faults, which come and go, looming, making it impossible to judge and deal with. At this time, you can clean the circuit board with water or alcohol, and brush off the dust and rust on the circuit board with a soft brush, especially pay attention to the solder joints are dense, and the circuit near the 0 volt copper layer is also ...

Frequency converter is a widely used equipment in modern factories. This is a very expensive new type of equipment, and the maintenance price of the inverter is also very expensive, so in the process of using the inverter, we should pay attention to the use of the inverter. Thing...

What is an inverter power supply? A variable frequency power supply converts the alternating current from the main power supply from AC→DC→AC to a pure sine wave. The output frequency and voltage can be adjusted within a specific range. Unlike the inverter governor used for the speed control of electric motors, it is also different from the general AC power supply. Aspiring AC ...

For the most popular electrical control equipment inverter (Variable-frequency Drive, VFD), as a precision electronic industrial control equipment, in order to run smoothly for a long time, we, as professional and technical personnel, need to be on the VFD device or before the operation.

1. Condensation The temperature difference in the workshop is large, and the inside of the inverter presents condensation. 2. Impact load. The load fluctuates greatly, and the output current of the inverter suddenly increases, resulting in module damage. 3. The inverter is overloaded in the start, ...

In the process of practical speed regulation, a general frequency-adjustable communication power supply can not meet the requirements of speed regulation and control of asynchronous motors, and must also take into account the problems of using the magnetic field of the motor, pressing the starting current and obtaining the desired torque characteristics, such as low-frequency torque characteristics.

1. Cooling fan As a prerequisite for ensuring 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.

SB150 SB150 is a delicate and practical inverter launched by Sunland, with exquisite and delicate appearance, exquisite and perfect circuit, simple and practical function, and clear and reasonable menu distinction. At the center of the SB150 is Sunland's high-performance optimized space vector ...

When the line power supply exceeds the driver's kV-A rating by 10 times, add a line reactor. A 3% impedance line reactor should be used to reduce power line transient voltages caused by capacitor switching, line notching, DC bus overvoltage tripping, and inverter overcurrent and overvoltage conditions. Line...

For the dual requirements of anti-interference and galvanic isolation, the pre-circuit of the output current detection or voltage detection of the inverter usually uses the "matching" circuit of the linear optocoupler device and the differential amplifier to complete the transmission mission of the detection signal. The circuit of the differential amplifier is based on the current detection circuit ...

The three-phase barrier transformer adopts a three-phase double-winding structure, which has the characteristics of lightning protection and anti-disturbance. Each winding on the primary and secondary sides is divided into two coils, which are wound from two layers of metal foil insulated from each other. So there is capacitance C (capacitance barrier transformer) between the two coils. Then, being able to ...

The first step is not to turn on electricity! First open the inverter panel, wipe the inverter dry, and then use a hair dryer to dry the display, PC board, push board, power components, fans, etc., with 95% alcohol, scrub the components with 95% alcohol, and dry the hair dryer with cold air. Step 2: After an hour, use alcohol ...

Prior to the introduction of frequency converters, overhead crane operators operated the cranes using contactor-based controls. For low-cycle cranes, the system is equipped with a single or two-speed motor. For cranes with higher load cycles, they use so-called wound rotor motors. ...

1. Select the inverter according to the load characteristics Second, when selecting the inverter, the actual motor current value should be used as the basis for the selection of the inverter, and the extra power of the motor can only be used as a reference. Secondly, it should be fully considered that the output of the inverter contains higher harmonics, which will form the power factor of the motor.

Assuming that the inverter 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 working, resulting in the equipment being unable to ...

Sunland inverter and soft start is a first-class, reliable and reliable motor control system, which is able to meet the needs of various applications. The advantages of expected Sunland inverters and soft start are: 1. Performance: Expect Sunland inverter and soft start...