The difference between servo drive and frequency converter - LS produces electricity

1. The inverter can adjust the power of the motor and complete the variable speed operation of the motor, so as to achieve the purpose of saving electricity. For example, it is reflected in the centrifugal fan and water pump, when the centrifugal fan and water pump use the frequency converter, the operator can convert the frequency to regulate the speed, and can easily control the flow rate according to the need, so as to save ...

Because the touch of the network adapter is not good, perhaps due to disturbance and other problems, the DP network that has been used for a long time may show a "transient disconnection" situation, that is, it will be disconnected by an occasional moment, and it will soon recover normally. If OB86 is not downloaded, the CPU will stop during a transient outage. Now all over the option to download a ...

The basic method of switching the power supply of the device requires us to carry out the corresponding installation and debugging according to the specific model and the device environment. And in the process of installation, we need to pay more attention to safety and stability to ensure the normal operation of the switching power supply. ...

Molded case circuit breakers are also known as equipment circuit breakers, all parts are sealed in plastic housings, auxiliary contacts, undervoltage trippers and shunt trippers are modular. Because of the very compact structure, the molded case circuit breaker is basically impossible to maintain. It is mostly manually operated, and the large capacity ...

　　The main functions and functions of PLC: 1. For sequential control: sequential control is based on the current and pre-historical situation of the input switch, and produces the required switching output, so that the system can operate in a certain order. ...

When using an inverter, a leakage maintainer must not be used. This is a major principle of the use of frequency converters. Some users choose the corresponding leakage maintainer for the inverter when using the inverter. *The result is: the inverter moves together, the leakage maintainer acts, and the system foundation cannot be ...

The relationship curve between the load rate β and the power η of the inverter can be seen: when β = 50%, η = 94%; When β = 100%, η = 96%. Although the β has doubled, the η change is only 2%, but it is also considerable for medium to high power (a few hundred kilowatts to several thousand kilowatts) electric motors. The system power is equal to the inverter power ...

For example, the operating principle of voltage inverter is mainly to regulate the voltage source, and the voltage source regulates the current to achieve the role of conditioning, while the current inverter is to directly regulate the current to achieve the role of conditioning. ...

(1) The maintenance objectives are different Overcurrent is mainly used to maintain the inverter, whereas overload is mainly used to maintain the motor. Because the capacity of the inverter sometimes needs to be increased by one or even two gears than the capacity of the motor, in this case, the inverter is not necessarily overcurrent when the motor is overloaded. ...

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.

1. The low-voltage fuse cannot be used as an overload maintenance of the motor. 2. The additional voltage of the fuse must be greater than or equal to the operating voltage of the distribution line. 3. The additional current of the fuse must be greater than or equal to the ...

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.

The DC reactor for the inverter is also called the flat wave reactor, which is connected in series in the DC bus (terminals P1 and P+). The main thing is to reduce the higher harmonic component of the input current and improve the power factor of the input power supply (to 0.95). This reactor can be used at the same time as the AC reactor, and the inverter has high power ...

1. What is a self-learning motor of inverter? Enter the motor nameplate (voltage, current, Hz rating) in the inverter parameters, and then the inverter actively measures other parameters of the motor. Second, why should the inverter learn by itself?

First, the main function of the braking unit In some applications, the need for rapid speed reduction, according to the principle of asynchronous motor, it can be known that if the slip is larger, the greater the torque, the same braking torque will increase with the increase of the speed reduction rate, so that the system speed reduction time is greatly shortened, and the energy feedback is greatly ...

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., ...

Brake unit: The function of the braking unit is to turn on the energy-dissipating circuit when the voltage Ud of the DC circuit exceeds the specified limit (such as 660V or 710V), so that the DC circuit can release energy by thermal energy after passing through the braking resistor. The braking unit can be divided into built-in and external, the former is ...

1. The speed of the motor slows down, and the cause of the problem of sound disorder may occur in the electronic speed stabilization device and the motor itself. If there is no problem with the power supply, most of the motor itself has a problem. It can be repaired by replacing the new motor and dismantling and repairing the motor. Dismantling and repairing the motor ...

Due to poor contact of network connectors, or due to disturbance and other problems, DP networks that have been used for a long time may show a "transient disconnection" situation, that is, occasionally disconnected instantaneously, and quickly recover to normal. If OB86 is not downloaded, the CPU will stop during a transient outage. Now all over the option to download a ...

Change the shutdown mode to inertia parking and you're done! In this way, after the fan is stopped, the inverter will immediately turn off the output, so that the fan can stop freely, at this time, although the fan is in the power generation situation, but the electricity generated by the fan will not pass through the inverter of the inverter to generate direct current, so the inverter will not overvoltage ...