Advantages and disadvantages of Delta's open-loop and closed-loop control

There are many types of Delta contact screens, of course, the parameters of different types are different, and the most important product is DOP-B03S201. This product is a 4.3-inch screen, its aspect ratio is 16:9, the screen is made of TFT raw materials, and its resolution can reach 480X ...

input/output reactor for frequency conversion speed regulation; Because the inverter is often affected by the impact of inrush current and surge voltage in the process of driving the inverter motor operation governor, which will seriously damage the function and service life of the inverter and the motor, so it is necessary to install a transmission system in front of it.

1. Harmonic problems The equipment that plays the role of switching in the main circuit of the inverter must generate harmonics in the process of turning on and off the circuit. The lower harmonics generally have a greater impact on the motor load and cause torque ripple; The higher harmonics increase the leakage current of the inverter's output cable, making ...

There will be some difference between the parameter setting of the inverter at the factory and the requirements of practical application. Therefore, the reasonable setting of the inverter parameters is directly related to whether the inverter can be used normally, which is of decisive significance. General-purpose inverters generally have dozens or even hundreds of functional parameters.

Parameter settings P1-XX are the basic parameters P1-00 pulse method selection, *** bit selection is 2, that is, pulse train + direction P1-00 signal logic picking, the third digit is selected as 0 or 1, which is the positive logic or anti-logic, X0XX or X1XX P1-01 Control form selection, pick ...

1. Each VFD should be cleaned and protected once a quarter. Protecting and cleaning equipment must have specific records and the signature of the person in charge. As long as the management is in place, the task can be completed with quality and quantity; 2. Before cleaning, the power supply must be blocked, and the voltage must be reduced to a safe voltage before starting to work. ...

The box structure of the inverter should be adapted to the environmental conditions, that is, the temperature, humidity, dust, pH, corrosive gas and other elements must be considered. There are several common types of structures that users can choose from: 1) Open IPOO ...

In addition to adhering to the high reliability, excellent efficiency and outstanding power of Delta's UPS products, the N1-3kVA series has three obvious core advantages: 1. High availability planning Delta N 1-3kVA series ...

(1) Considering that the power supply is inconsistent at the time of power-on, the load is short-circuited, and the rational load may present a reverse voltage, the output end of each power supply connected in series should be set up with two anti-parallel tubes, and the forward additional current of the two * tubes should not be less than the additional output current of the power supply, and the reverse breakdown voltage should not be less than ...

Delta's inverter should be thoroughly inspected for initial installation or long-term use. The items and methods to check are as follows: 1) Check whether the Delta inverter is damaged, whether the metal parts are rusty, and whether there is frost. If there is frost and condensation, it should be dry for 4 hours (60°C) or in ...

(1) The wiring interval between the braking unit and the inverter, as well as between the braking unit and the braking resistor, should be as short as possible (the wire length should be less than 2m), and the wire cross-section should meet the requirements of the braking resistor discharge current. (2) The brake unit is working ...

1. Speed regulation of general motor: By changing the input voltage and frequency of the three-phase asynchronous motor, its speed can be controlled. Generally, when the motor is at low speed, the temperature rise becomes larger due to the decrease in the power of the cooling fan, and the motor load should be reduced according to the frequency. 2 ...

1. The necessity of braking resistance If the regenerative energy that occurs during deceleration and descent in the application is too large, there is a possibility that the voltage of the main circuit inside the inverter will rise, causing damage. Because usually the inverter has a built-in overvoltage maintenance function, the main circuit overvoltage (O...

1: What is the difference between servo motor and general motor? The biggest difference between servo motors and general motors is the motor rotor and reaction equipment. The surface of the servo motor rotor is pasted with a strong magnetic plate, so that the magnetic field generated by the stator coil can control the orientation of the rotor, and the acceleration and deceleration characteristics are ...

The non-standard manipulator can be customized according to the practical needs of customers, because the non-standard manipulator has no specifications to follow, and there is no such kinematic model in the controller, so the development of the control system is difficult. Delta recently provided non-standard manipulators for pharmaceutical board manufacturers to supply control solutions ...

Low-voltage circuit breakers, commonly known as active air switches, are one of the primary electrical switches in low-voltage distribution networks. It can not only turn on and off normal load current, motor operation current and overload current, but also turn on and off short circuit current. It is mainly used as a low-voltage distribution line or a switch cabinet that is not often operated ( ...

The main way to use the inverter is to change the output frequency to achieve the controllability of the motor speed, so do you know what steps are required to complete the output frequency controllability? One of the main points is how to complete the change of the frequency signal supplied by the inverter equipment.

Delta's touch screen consists of a contact detection component and a touch screen controller. The contact detection component is installed in front of the display screen to detect the user's contact orientation and is sent back to the touch screen controller; And Delta's touch screen controller's ...

Delta's thermostats are only available in the DTE series (variety 1.5 and above) with the "slope control" function. Illustrate the following examples: For example: PV=20°C, SV=100°C, slope 10.0°C/min Then (100 – 20)/10.0 ...

What are the benefits of inverter power correction? Many brands of inverter power boards, driver boards, and motherboards can be universal, as long as the type, volume, and hardware are the same, and the desired power and voltage value can be obtained by correcting the manufacturer's parameters.