Megmeet inverter - a common measure for anti-interference of high-voltage inverters

1. Do not execute the program: The input check is identified by the input LED indicator or the input monitor composed of a writer. When the input LED is not lit, it can be preliminarily determined that the external input system is faulty, and then check with the multimeter. If the output voltage is not normal, it can be determined that ...

(1) The ambient temperature exceeds the range of 0-50 °C; (2) The relative humidity exceeds 85% or there is dew condensation (caused by sudden temperature changes or other factors); (3) direct sunlight; (4) There are corrosive and flammable gases, such as hydrogen chloride, ...

The high-voltage inverter has a highly intelligent computing level and a perfect fault detection circuit, and can provide accurate positioning of all faults, and make clear instructions on the main control interface. In practical application, we find that common faults can be divided into abnormal control channels, IGBT overcurrent, overvoltage...

1. External equipment failure. Such faults come from external devices such as various sensors, switches, actuators, and loads. The failure of this part of the equipment will directly affect the control function of the system. This type of failure is usually caused by the quality and longevity of the equipment itself. 2. System failure ...

1. Select the inverter according to the load characteristics A: Fans and pumps are the most common loads: the requirements for the inverter are the simplest, as long as the inverter capacity is equal to the capacity of the motor (air compressors, deep water pumps, sediment pumps, and fast-changing music fountains need to increase their capacity). ...

21。 The unit is overheating The radiator in the unit is equipped with a temperature switch (normally closed point), and when the temperature exceeds 85°C, the normally closed point of the temperature relay is disconnected, and the unit is overheated and faulty. Check whether the cabinet top fan is working properly, whether the unit cabinet fan switch is tripped, and whether the filter screen is blocked.

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The first is relay output, the relay output response speed is slow, the output current is large, generally can reach 2A, but the electric shock life is short, the output frequency is low, the maximum is 1HZ; The second is transistor output, the transistor output response speed is fast, the output current is small, and the contact life is relatively small.

(1) Spot welding: The weldment is pressed between the two cylindrical electrodes, heated by electricity, so that the weldment melts at the contact to form a nugget, and then the power is cut off, and it solidifies and crystallizes under pressure to form a dense solder joint. Spot welding is suitable for welding thin plates (laps) and steel bars below 4 mm.

1. Hydraulic coupling method. That is, a hydraulic coupling device is inserted between the motor and the load in series, and the size of the coupling force between the motor and the load is adjusted by the height of the liquid level, so as to realize the speed adjustment of the load; 2. Cascade speed regulation. Tandem speed regulation must use a wound asynchronous motor, and the rotor ...

In the manufacturing industry, there are a large number of open-loop sequential control based on switching quantities, which carries out sequential action numbers according to logical conditions and operates in chronological order; In addition, there is the control of chain protection actions according to the logical relationship that is not related to the sequence and timing; As well as a large number of switching quantities, pulse quantities, gauges...

Sinusoidal Pulse Width Modulation (SPWM) control mode It is characterized by simple structure of control circuit, low cost, good hardness of mechanical characteristics, and can meet the smooth speed regulation requirements of general transmission, and has been widely used in various fields of industry. However, this type of control is at low frequencies, ...

The EhaveCM350AR is a fully digital inverter melting multi-functional industrial heavy-duty Megmeet welding machine launched by Megmeet for global metalworking manufacturing. It brings customers higher quality and higher efficiency welding experience and value with excellent arc characteristics, reliability and high efficiency, and helps customers ...

1. Carefully monitor and record the display parameters on the man-machine interface of the inverter, and reflect the abnormality immediately; 2. Carefully monitor and record the ambient temperature of the frequency conversion room, and the ambient temperature should be between -5 °C and 40 °C. The temperature rise of the phase-shifting transformer should not exceed 130°C; 3. Summer ...

1. Realize remote control of industrial field equipment; 2. The PLC industrial gateway realizes remote upgrade of equipment firmware, downloads the program, and can flexibly access various equipment management platforms; 3. Realize remote control of industrial site touch screen and remote mapping of configuration screens; 4. PLC industry ...

First, the process requirements When the low-pressure pressure collected by the system is greater than the upper low-pressure pressure set by the touch screen, the compression time will be loaded according to the set loading time, and the lower pressure will be reduced according to the set load reduction time. The high pressure collected is greater than that on the high pressure ...

1. Understand the type of variable frequency load The correct selection of the frequency converter is very critical for the proper operation of the control system. When selecting a frequency converter, it is important to fully understand the load characteristics driven by the frequency converter. In practice, production machinery is often divided into three types: constant torque load, constant ...

1. If there is a sharp acceleration or deceleration, please extend the acceleration and deceleration time. 2. Avoid rapid increase in load. 3. Check whether there is a short circuit in the UVW of the motor terminal. 4. The module is damaged, and the drive circuit is damaged, resulting in an overcurrent alarm. ...

(1) Central Processing Unit (CPU) The central processing unit (CPU) is the control center of the PLC. It accepts and stores user programs and data typed from the programmer, checks the status of the power supply, memory, I/O and alert timer in accordance with the functions assigned by the PLC system program, ...