Megmeet inverter - the speed regulation method of high-voltage inverter

Safety operation procedures for spot welding machines: 1. Before operation, the oil stain of the upper and lower electrodes should be removed. After power-on, the body shell should be free of leakage. 2. Before starting, the steering switch of the control line and the small switch of welding current should be connected, the number of poles should be adjusted, and then the water source and gas source should be connected.

There are many types of PLC products, and their specifications and performance also vary. PLCs are usually classified according to their different structural forms, differences in functions, and the number of I/O points. 2.1 Classification by structural form According to the structural form of PLC, PLC can be divided into whole ...

1. PLC industrial gateway has rich interfaces and is easy to deploy It supports 4G, 3G, PPPOE, Wi-Fi network, digital IO input and output, and serial terminal communication, providing different access solutions for different applications. 2. Intelligent analysis and efficient access Inline protocol analysis ...

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 inverter protects itself Instantaneous overcurrent, overvoltage, undervoltage, overload, short circuit to ground, abnormal control circuit, then for the protection of the inverter itself, the limit value of overcurrent, overvoltage, undervoltage, etc., when the inverter is running, if it exceeds ...

3) Tungsten argon arc welding (TIG) Non-melting electrode gas arc welding, TIG welding, English is Tungsten Inert Gas (abbreviated TIG), also known as Gas Tungsten Arc Welding (abbreviated GTAW) The principle is: TIG welding is in argon and other inert gases.

When the inverter is installed and wired; Note: When more than two inverters are installed in the same cabinet, please pay attention to the installation position and spacing to ensure the heat dissipation effect. Dangerous: 1. It should be operated by professional electrical engineering personnel, otherwise there is a risk of electric shock. 2. Please make sure before wiring...

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.

The PLC communicates with the host computer, and BlandC is used to write the communication program between the host and the PLC, and the COM1 port must be initialized, the baud rate is 9600bps, and the parity check bit adopts even check, and the seven-digit valid data is used. When the computer receives the response character ACK from the PLC, it ...

1. The welding machine has no welding current output 1. Cause of failure: the internal wiring of the non-voltage input at the input end of the welding machine falls off or the internal coil of the broken circuit is burned out. 2. Treatment method: check whether the switch, wire, fuse and connection parts from the distribution box to the input end of the welding machine are in good condition.

Fault three Fault phenomenon: There is a rebound phenomenon when the rotation starts Solution: 1. Set the start frequency P08.02 and start frequency time P08.03 appropriately (such as P08.02=P08.03=0.5) 2. Appropriately reduce the stator resistance (P03.07) and no-load current value (P03.11 ...

1. PLC is a relatively mature control system composed of single-chip microcomputer, which is the product of a mature and stable single-chip microcomputer application system that has been debugged. It is highly versatile. 2. The single-chip microcomputer can form a variety of application systems, and the application range is wider. In the case of a single "microcontroller", it ...

When the oscilloscope looks at the current monitoring output of the driver, it is all noisy and cannot be read Cause: The current monitoring output is not blocked from the AC power supply (transformer). Solution: You can use a DC voltmeter to detect and investigate. Servo motor high-speed rotation ...

1. The role is different A PLC (Programmable Logic Controller) is an electronic system designed for digital operations in an industrial environment. The inverter is the application of frequency conversion technology and microelectronics technology to control the AC motor by changing the frequency of the motor working power supply.

1. Correctness (low debugging cost) First of all, the PLC program must be able to work correctly to meet the requirements of the actual control process. This is the essence of the PLC program, and if you don't do that, nothing else makes sense. 2. Reliability (low maintenance cost) Not only to ...

First, the disadvantages Choosing too high a voltage level results in too high an investment and a long payback period. With the increase of the voltage level, the insulation of the motor must be improved, so that the price of the motor increases. The increase of voltage level increases the number of series connections of power semiconductor devices in the inverter, and the cost rises. ...

1. The PLC adopts the mode of centralized sampling and centralized output, which can reduce the influence of external interference. 2. The working process of PLC is the process of cyclic scanning. The duration of the cyclic scan depends on the speed of execution of the instructions and the length of the user's program. 3. Output to input ...

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. 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. 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%) ...