Brake unit, brake resistor function - LS generates electricity

1. Soft start function The soft start function of the inverter is no longer necessary to talk about today, and twenty years ago, it was still a very exciting operation, which is also one of the auxiliary basic functions of the inverter. At the beginning of the birth of the inverter, it was aimed at the most widely used three-phase asynchronous squirrel cage ...

1. Download the control program. 2. Put the inverter in open-loop experimental mode and set the appropriate parameters. 3. Connect the incoming cable of the inverter. The cable on the output side of the inverter is not connected. 4. Push the high-voltage cabinet to the experimental position, close the switch, and ...

In the use of soft starters, some users often have some wrong concepts: 1. It is believed that whether the motor can be started successfully is related to the function of the soft starter, and a good brand or even a foreign brand should be selected under heavy load. 2. When the motor is not ...

The PLC should be kept away from strong disturbance sources such as electric welding machines, high-power silicon rectifier equipment and large-scale power equipment, and cannot be installed in the same switch cabinet as high-voltage electrical appliances. Power cables, control cables, and PLC power cables and I/O cables should be separated from the wiring ...

1 AC three-phase circuit a) Yellow for phase A, green for phase B, and red for phase C; b) Light and blue colors for the neutral line or neutral line; C) Yellow and green two-color wires are used for safety grounding wires. 2 AC circuits connected by twinax wires or stranded wires: red, black ...

VVVF frequency conversion, vector control frequency conversion, and direct torque control frequency conversion are all one of the AC-DC-AC frequency conversion. Its common disadvantages are low input power factor, large harmonic current, large demand for energy storage capacitors in DC circuits, and renewable energy can not be reflected back to the grid, that is, it cannot carry out four-quadrant operation.

1. Harmonic disturbance The rectifier circuit will produce harmonic current, which produces a voltage drop on the impedance of the power supply system, resulting in distortion of the voltage wave pattern, and the voltage of this distortion constitutes a disturbance on many appearances, and the common voltage distortion is the flattening of the top of the sine wave. Harmonic wave...

1. The main reason for the overload of the inverter (1) Malfunction, the current detection part inside the inverter has a problem, and the detected current signal is too large, resulting in tripping. (2) The mechanical load is overloaded, and the main feature of the overload is that the motor heats up, and it can be ...

1. Active power - in the process of generating and transmitting alternating current energy, the part of energy used to convert into electromagnetic methods is called active power 2. Reactive power - in the process of AC electric energy generation and transmission, it is used for electromagnetic field AC in the circuit.

How LS Contactor Works: Generally, after the contactor coil is energized, the entire coil current will generate a magnetic field, which will make the core inside have electromagnetic attraction to attract the core, and let their communication contactor point action normally closed contact disconnect, or close, which ...

Inverter is an important drive material in modern industrial production, as a power equipment, it is working hard all the time, so its fault rate is very high, and the rapid processing of inverter faults, to ensure the continuity of industrial production, is every maintenance electrician and on-site debugging of electricians.

Servo drives and frequency converters are defined differently The driver, also known as servo manipulator and servo amplifier, is a kind of manipulator used to control servo motors, and its function is similar to that of a frequency converter acting on a general communication motor. It is part of the servo system, mainly used for high-precision positioning ...

1. What is PLC? PLC control system, Programmable Logic Controller, programmable logic controller, a digital operation of electronic devices specially designed for industrial production planning, it uses a class of programmable memory, used in its internal storage program, the execution of logic...

Due to the short circuit of the load, the failure of the self-oscillation circuit and the loss of control of the protection circuit, the switching power supply will cause the base of the switch tube to be unable to get the switching pulse and intermittent operation, which makes it difficult to locate the shortcomings of SMPS. The difficulty of the repair operation and the improper method will expand the shortcomings, constituting the phenomenon of continuous burning of the switch pipe, etc., ...

Burn two new motors in a row! The output current and voltage of the inverter are balanced, the input voltage is balanced, the current is unstable, and the fluctuation is 20%-50%, the inverter is burned off by a short circuit between 35Hz turns, the grid voltage is very stable, 720V, the interval between the motor and the inverter is 120m, and the input and output terminals of the inverter are powered ...

A transistor is a solid-state semiconductor device with a variety of functions such as detection, rectification, amplification, switching, voltage regulation, and signal modulation. A transistor is a variable current switch that can manipulate the output current based on the input voltage. Unlike general mechanical switches (e.g. Relay, swit...)

The inverter is a high-tech intelligent product, in order to let it complete the specified control mission, it must be set parameters, otherwise, it is like the computer is not installed and used, and it cannot be operated normally. The parameter setting is carried out by the control surface of the inverter. All kinds of inverters ...

LS is an electrical equipment company affiliated to LG, kglwin3.62 programming software Chinese version is a professional plc programming software designed to help daily more efficient planning and development software, the software supports the programming and debugging of LG Master-K series and LG MASTER-K series, and provides ...

Each type of servo motor has additional torque, maximum torque and servo motor inertia and other parameters in the standard items, each parameter and load torque and load inertia must have a relevant connection, the output torque of the servo motor should meet the requirements of the movement conditions of the load organization, such as the speed of the acceleration ...

The contactor is mainly composed of a drive system, a contact system, an arc extinguishing system and other parts. 1. Drive system: The drive system includes electronic modules, soft iron, and permanent magnets, which is an important part of the permanent magnet contactor.