The cause and treatment method of the fault code Eroc1 of Megmeet inverter

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 ...

1. Power components The power supply assembly is used to provide the power required for the operation of the PLC, and the external power supply can be converted into a power supply for the PLC internal and applicable to the case. 2. Microprocessor CPU and memory components Microprocessor CPU is the core device of PLC, and CPU is different from each manufacturer.

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. The arc is stable in the field of full current, the spatter is small, and the same welding machine is not only suitable for small current base welding, but also suitable for high current and high deposition rate work 2. Arc concentration and strong penetration. With the same penetration depth, the heat input is reduced by more than 20% compared with other gas shielded welding machines, and the thermal deformation ...

Inverter control cabinet (inverter electrical control cabinet / electric control cabinet / electric control box) is an electrical control cabinet developed by using inverters from Siemens, ABB, Schneider, Fujifilm, Mitsubishi, Panasonic, Delta, Shilin, Inovance and other manufacturers. According to the needs of working conditions, AC transmission can be installed in the frequency conversion cabinet.

1. Metallurgical industry - the application of high-voltage inverter in the metallurgical profession mainly includes plate and wire rod rolling mills, coilers, fans, slurry pumps, etc., with the primary intention of motor energy saving. 2. Electric power industry - China's power generation capacity ranks second in the world, second only to United States. The power profession is also changing.

(1) The E end of the high-voltage inverter should be connected to the shell of the control cabinet and the motor, and should be connected to the ground, and the grounding resistance should be less than 100Ω, which can absorb surge interference. (2) The input or output of the high-voltage inverter is equipped with an inductive magnetic ring filter. Flat and 3-4 turns, helps to inhibit ...

1. Air switch Air switch is also called air circuit breaker, referred to as air open, is an indispensable component of the control cabinet, usually from the outside into the cabinet of power supply, must go through the air open, in order to reach the inside, the function of air open in addition to the power supply, more as short circuit protection and overload protection...

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 ...

(1) Select components and materials with good heat resistance and thermal stability to increase their allowable working temperature; (2) Reduce the heat generated inside the equipment (device). To this end, micropower devices, such as low-loss IGBTs, should be used more often, and the number of heat-generating components should be minimized in the circuit design.

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) The PLC adopts the working mode of centralized sampling and centralized output, which reduces the influence of external interference. (2) The working process of PLC is the process of cyclic scanning, and the length of cyclic scanning time depends on the speed of instruction execution, the length of the user program and other factors. (3) Output ...

(1) In terms of control method: PLC adopts a program to achieve control, which is easy to change or increase the control requirements, and the contact points of PLC are unlimited; (2) In terms of working mode: PLC adopts serial working mode to improve the anti-interference ability of the system; (3) Control speed: PLC ...

Megmeet inverter maintenance and testing method 　　1. The Megmeet rectifier module is damaged It is usually caused by grid voltage or internal short circuit. In the case of sweeping internal short circuits, the rectifier bridge is replaced. When dealing with shortcomings on site, the user power grid should be checked. Such as electricity ...

1. Grounding problems The grounding requirements of the PLC system are relatively strict, and it is best to have an independent dedicated grounding system, and it should also be noted that other equipment related to PLC should also be reliably grounded. When multiple circuit grounding points are connected together, unexpected currents can be generated, resulting in logic errors or ...

(1) The energy density is highly concentrated, the heating and cooling speed is extremely fast during welding, the heat affected zone is small, and the welding stress and deformation are very small; (2) Non-touch processing, no external force on the weldment, suitable for welding parts that are difficult to touch; (3) The laser can be transmitted through the optical incoming ...

Today's electronics industry revolves around high-speed communication and supercomputing on the Internet, and the requirements for electronic products are getting higher and higher. A large number of micro-precision electronic products are constantly testing the response speed and level of major enterprises in the market. Electronics manufacturers perform real-time, accurate ...

One. It is difficult to start the arc and easy to break the arc 1. Confirm that the quality of the electrode you use is good, and the poor quality electrode may not meet the requirements of high-quality welding: 2. The welding rod that has not undergone drying treatment is also not easy to arc, and causes the arc to be unstable, so that the welding defects increase, and the welding ...

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 ...

On September 24, the 2021 Zhongguancun Forum, co-sponsored by the Ministry of Science and Technology of China, the Chinese Academy of Sciences, the China Association for Science and Technology, and the Beijing Municipal People's Government, officially opened in Beijing. As one of the main agendas of the forum, the Zhongguancun International Technology Exchange Conference closely follows the "smart· healthy· carbon neutrality...