1. There is a problem with a frequency converter, it cannot operate and the LED shows "UV" (abbreviation of under voltage), which clarifies that the alarm in the book is DC bus undervoltage. Since the control loop power supply of this type of inverter is not taken from the DC bus, but from the communication input through the transformer alone...

The correct choice of Delixi inverter is very critical to the normal operation of the control system. When selecting a frequency converter, it is necessary to fully understand the load characteristics driven by the frequency converter. In practice, people often divide production machinery into three types: constant torque load, constant power load and fan, water pump ...

Relay is a kind of electrical appliance that turns on or off the control circuit according to the change of external input signals, such as electrical quantity (voltage, current) or non-electrical quantity (heat, time, speed, etc.) to complete the control or maintenance mission.

1. Conductors 1. Color High-quality copper is called "red copper" or "red copper" – as the name suggests, this copper is reddish, purple, and dark red in color. The worse the copper, the lighter the color and the more yellow it is, which is called "brass". 2. Thickness ...

There are also several types of quasi-sine waves, ranging from square waves, which are almost indistinguishable from square waves, to rounded trapezoidal waves, which are relatively close to sine waves. We're only going to talk about square waves, which are the waveforms that most commercially available high-frequency regulators can supply today. ...

1. The inverter runs with the motor at no load 1. To set the power and number of poles of the motor, the operating current of the inverter should be considered. 2. Set the maximum output frequency, fundamental frequency, and torque characteristics of the inverter. The general-purpose inverter is equipped with a number of VPf curves for users to choose.

Quickness: It means that the maintenance device should be able to remove the short-circuit fault as soon as possible, and its purpose is to improve the stability of the system, reduce the damage to the faulty equipment and lines, reduce the scale of the fault, and improve the effect of active reclosing and active investment of standby power supply or standby equipment. Reliability: Refers to ...

What is the principle of the electrical control circuit of the three-phase motor? First of all, let's take a look at what is the principle of electrical control of work machinery. The schematic diagram of the electrical control circuit of the working machinery is actually connected with graphic symbols, text symbols and lines to show the connection relationship and circuit of each electrical component.

(1) Gain Parameter: The share gain of the speed manipulator. If the gain is too large, it may cause speed fluctuations. (2) Integration time parameter: the integration time of the speed manipulator, that is, the change rate of the output signal of the manipulator under the deviation step signal. The shorter the integration moment ...

1. There is a problem with an inverter, it cannot operate and the LED shows "UV" (abbreviation of under voltage), which clarifies that the alarm in the book is under voltage of the DC bus. Because the power supply of the control loop of this type of inverter is not taken from the DC bus, but from the AC input through the transformer alone.

The selection of inverter is indeed very important, because if the selection is not suitable, it will cause a waste of time and money, and at worst it will cause production incidents and personnel damage. First of all, according to the classification and selection of the inverter 1. Inverters can be divided into general-purpose inverters and special inverters. ...

1. The capacitance is generally indicated by "C" plus a number in the circuit (e.g., C25 indicates the capacitance numbered 25). A capacitor is an element composed of two metal films that are placed next to each other and separated by an insulating material. The characteristic of the capacitor is first and foremost the communication through the DC block. The size of the capacitance is ...

Voltage regulator fault phenomena and their corresponding solutions Input phase loss - correctly input phase A, B, C phase, should be three-phase four-wire system or five-wire system The control circuit board is not working - the control circuit board is disconnected or damaged by itself. Repair or replace Control circuit board in the state of protection ...

1) Rectifier The rectifier circuit of the universal inverter consists of a three-phase bridge rectifier bridge. Its function is to rectify the power frequency power supply and supply DC power to the inverter circuit and control circuit. Three-phase AC power supplies are generally required to be introduced into the input of the rectifier bridge through the absorption capacitor and varistor network.

Thermal accounting requires information such as power loss, thermal resistance of the package, and ambient temperature. The power loss is calculated in the same way as the efficiency accounting, which is simply the value of the difference between the output input voltage and the input current. Thermal resistance should have a technical standard documented, and if it is not available, it is necessary to consult the manufacturer. Basically...

1. What is a switching regulator? Switching regulator, English (regulatior), some people call it a regulator, a voltage regulator source. To achieve voltage regulation, it is necessary to control the system (negative feedback), from the theory of automatic control, we know that when the voltage rises, it is lowered by negative feedback, ...

Delixi voltage regulator will have a stable preset amplitude of a fixed output voltage, regardless of its input voltage or load conditions change. There are two types of voltage regulators: linear and switched The linear regulator is an active (BJT or MOSFET) operated by a high-gain differential amplifier ...

Delixi general fan, pump, the requirements for the inverter are simple, only the inverter capacity is equal to the motor capacity. Roots blowers, deep-water pumps, sediment pumps, and fast-changing musical fountains are available in a larger capacity. Lifting...

Quickness: It means that the maintenance device should be able to remove the short circuit as soon as possible, and its intention is to improve the stability of the system, reduce the damage to the peak equipment and lines, reduce the scope of the process, and improve the effect of active overlapping room and standby power supply or standby equipment active investment. ...

There are two speeds of Delixi inverter, one is the target speed, and the other is the speed of practice. The target speed requires the value of the detailed parameters to be adjusted, such as the *** high frequency/*** high frequency in the inverter parameters; Regarding the practical output speed, the frequency needs to be checked in the inverter parameters ...

1. The socket quality is low quality First of all, we should check whether the socket is a miscellaneous and inferior product, the copper clamping force in the defective socket is not good, resulting in poor contact between the socket and the plug, and the socket and plug will heat up after a long time of electrical use. So be sure not to buy cheap miscellaneous ...