How to use the installation wiring of the LS inverter

1. The touch screen is controlled by PLC inverter 1. At present, the general control of the inverter needs to use PLC to communicate with the inverter, read the information of the inverter, and then the touch screen communicates with the PLC in order to complete the control of the inverter to start, stop, and monitor the operation of the inverter.

1. The voltage level of the AC contactor should be the same as the load, and the type of contactor should be suitable for the load. 2. The accounting current of the load should be less than or equal to the additional working current of the contactor. The turn-on current of the contactor is greater than the starting current of the load, and the breaking current is greater than the load ...

1. Maintain the inverter from the damage of regenerative electricity In the process of rapid shutdown of the motor, because of the inertia, a lot of regenerative electric energy will be generated, if this part of the regenerative electric energy is not consumed in time, it will directly act on the DC circuit part of the inverter.

1. The power supply should be connected to the R, S, and T terminals of the VFD, and should not be connected to the VFD (U, V, W), otherwise the VFD will be damaged. It is necessary to clean up the trivial parts of the wire head after wiring, which may lead to abnormalities, failures, and failures, and it is necessary for the VFD to always be clean. When punching holes in the console, note that ...

1. When the power supply is now powered or the inverter is in running condition, do not open the shell of the inverter. Otherwise, an electric shock may occur. 2. When the front cover of the inverter is opened, do not move the inverter. Otherwise, you may be shocked by the high-voltage terminals or exposed charging capacitors. ...

LS touchers are divided into AC touchers (voltage AC) and DC touchers (voltage DC), which are used in electricity, power distribution and consumption. Toucher broadly refers to the electrical appliances that use the current flowing through the coil to generate a magnetic field in industrial electricity, so that the contacts are closed, so as to control the load. ...

1. Auxiliary contact: the contact mechanically linked with the main circuit of the circuit breaker and the closing mechanism is mainly used for the display of the circuit breaker and the closing status, and is connected to the control circuit of the circuit breaker through the opening and closing of the circuit breaker to control or interlock its related electrical appliances. For example, output to signal lights, relays, etc.

The communication control of the inverter is more complicated, so it is listed separately. The communication control of the inverter is a control method for the operation, speed regulation and status indication of the inverter through the communication interface of the inverter. ...

An important difference between servo and frequency conversion is that frequency conversion can be without encoder, while servo must have an encoder for electronic commutation. 1. What the two have in common: The skill of communication servo itself is the learning and application of ...

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 ...

Before the asynchronous motor is equipped with an inverter, let's take a look at the three major types of mechanical equipment loads: 1. Constant torque load: such as conveyor belts and mixers; When the inverter drags a load of constant torque nature, the torque at low speed should be large enough and the overload capacity should be large enough. If you need ...

Frequency conversion governor is the power frequency power supply (50Hz or 60Hz) into various frequencies of communication power supply, in order to complete the variable speed operation of the motor equipment, during which the control circuit completes the control of the main circuit, the rectifier circuit converts the communication power into direct current, and the output input of the DC center circuit to the rectifier circuit ...

1. The influence of electromagnetic disturbance on the inverter: In the modern industrial control system, the microcomputer or PLC control technology is mostly selected, and in the process of system planning or transformation, it is necessary to pay attention to the disturbance of the inverter to the microcomputer control board. The inverter is disturbed by the outside world, because the user ...

The Electronic Motor Relay (EMPR) is a digital motor maintenance relay with an MCU that has a compact and compact form factor that can be combined directly with a contactor. Through the implementation of real-time data processing, high reliability and high precision can be completed, and it can pass through phase loss, reverse, unbalance, stalled rotor, connection...

Now enterprises need to use a lot of ventilator inverters, the larger the scale of the enterprise, the more production workshops, the more ventilator inverters will be used. However, no matter how large the enterprise, there is a primary ventilator inverter, the selection of this kind of inverter is very important, because if there is no ...

According to the statistical analysis of the frequency and shutdown time of the inverter's detailed common problems, the correction rate of the main power supply circuit accounts for more than 60%; The main operating parameters are not set properly, resulting in about 20% of common problems; Common problems with control circuit boards account for 15%; 5% of common problems are caused by incorrect operation and external anomalies ...

The selection of the inverter should be considered according to the type of controlled object, speed regulation scale, static speed accuracy, starting torque, etc., so that it is easy to use and economical together with the satisfaction of process and production requirements. 1. Inverter and the motor to be operated (1) The number of poles of the motor. General motor ...

The differences between voltage type and current type inverter are mainly manifested in: (1) the load of the buffer inverter of reactive power is an asynchronous motor, which is an inductive load, and in addition to transmitting active power between the intermediate DC link and the motor, there is also the exchange of reactive power. Because power electronic switches ...

The inverter should be installed inside the control cabinet, and the following problems should be paid attention to when planning the control cabinet: 1) Heat dissipation issues: The heating of the inverter is caused by internal losses. In the inverter, the main circuit is the main circuit for the loss of each part, accounting for about 98%, and the control circuit accounts for 2%. ...

LS PLC programming software is a professional PLC programming assistant tool, providing excellent interface, which can carry out PLC programming operations such as online modification, debugging and self-diagnosis, packing and debugging, etc., compatible with LG Master-K series and LG MASTER-K series, which can make you in the process of processing in a timely manner.