Megmeet new energy vehicle PEU intelligent manufacturing production line was put into use

The first is that the PLC sends a start/stop signal to the server through the I/O point, and the server controls the operation of the servo motor. The PLC controls the operation/stop of the servo through the digital output, so as to achieve the purpose of controlling the servo motor. The second is through the pulse output of the PLC, which ...

1. The Megmeet rectifier module is damaged It is usually caused by grid voltage or internal short circuit. In the case of sweeping the internal short circuit, the rectifier bridge is replaced. When dealing with faults on site, we should focus on checking the status of the user's power grid. Such as the power grid voltage, whether there is an electric welding machine, etc.

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 ...

Precautions for maintenance of high-voltage inverters 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 inverter room, and the ambient temperature should be between -5 °C and 40 °C. Phase-shifting transformers ...

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...

1. The circuit board inside the inverter belongs to precision electronic components, which needs to be moisture-proof and dust-proof, and the temperature and humidity are not too high, and cannot be installed on the bare wall, so the inverter should be installed in the middle of the control cabinet; The inverter should be installed vertically, and the installation should be avoided directly above and below ...

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 temperature ...

The system efficiency is equal to the product of the efficiency of the inverter and the efficiency of the motor, and the system efficiency is higher only when both are working at higher efficiency. From the perspective of efficiency, the following points should be paid attention to when selecting the power of the inverter: 1) Inverter power value and motor power ...

1. The motor runs differently in both directions Cause of failure: The phase of the brushless motor is wrong; The deviation potentiometer is in the wrong position. Solution: Detect or detect the correct phase; Reposition the potentiometer. 2. The motor speed is abnormal Cause of failure ...

1. Power supply The power supply of the PLC plays a very important role in the whole system. It can't work properly without a good and reliable power supply system, so PLC manufacturers also attach great importance to the design and manufacture of power supplies. General AC voltage fluctuations are +10% (+15%) ...

1。 How do you distinguish between heavy and light failures? When the fault is light, the system sends out an alarm signal, and the fault indicator flashes. When a major fault occurs, the system issues a fault indication, and the fault indicator is always on. At the same time, a command is issued to break the high voltage and close the prohibition, and the fault information and high voltage are instructed.

PLC maintenance and inspection steps: 1. Check and make sure the mains power is on (120 VAC) 2. Check the available 24V power supply 3. Identify problem areas. It is recommended that peak currents cover this error code, a control method consisting of multiple components distributed over an area or process.

1. Input processing Input processing is also called input sampling. In this phase, the through-end state of all input terminals is read sequentially, and the read information is stored in the corresponding image register in memory. Here the input image register is flushed. Then the program execution phase begins. In the execution of the procedure ...

1. It is necessary to figure out the basic parameters and shape of the device that needs to be replaced. The basic parameters include the rated operating current, the capacitance of the capacitor, the resistance value of the resistor, the value of the GTR Darlington device (current amplification factor), the switching characteristics of the IGBT (including IPM) device, and the saturation voltage ...

Advantages of resistance welding: 1。 When a nugget is formed, it is always surrounded by a ring of plastic, the molten metal is isolated from the air, and the metallurgical process is simple 2。 The heating time is short, the heat is concentrated, the heat affected zone is small, and the deformation and stress are small. In general, there is no need to arrange calibration and heat after welding.

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.

The butt welding machine should be settled indoors, and should have a reliable grounding or zero connection, when a plurality of butt welding machines are connected to each other, the distance from each other shall not be less than 3m, and they should be connected to different corresponding power grids, and should have their own knife switches. Before welding, the pressure of the butt welder should be checked and determined.

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...

External electromagnetic interference can easily cause malfunctions If there are interference sources around the inverter, they will invade the inside of the inverter through radiation or power lines, causing the control loop to malfunction, causing abnormal operation or shutdown, and even damage to the inverter in severe cases. Noise suppression on the outside ...

1. The electrical control cabinet installed with PLC should have a clean and dry environment. Moisture-absorbing dry materials should be placed inside, and the splashing of coolant and oil mist should be prevented. 2. Regardless of the system working or shutdown, the electrical cabinet door should always be closed, and the electrical components should be kept in a good state.