1. Check the operating status of the inverter, whether the voltage and current value during operation are within the normal range.
2. Carefully monitor and record the ambient temperature of the frequency conversion room, and the ambient temperature is generally between -10 °C and 40 °C. The temperature rise of the phase-shifting transformer should not exceed 130°C.
3. Avoid direct sunlight, humidity, and water droplets, summer is the rainy season, and rainwater should be avoided from entering the inverter (such as rainwater entering the air outlet along the air duct).
4. Inverter device:
(1) The temperature is high in summer, and the ventilation and heat dissipation of the inverter installation site should be strengthened. Ensure that the surrounding air is free of excessive amounts of dust, acids, salts, corrosive and explosive gases.
(2) In order to maintain good ventilation, the interval between the inverter and the surrounding obstructors should be matched: 125px ≥ on both sides, and 300px ≥ upper and lower parts.
(3) In order to improve the cooling effect, all inverters should be straightened, in order to avoid foreign objects falling on the air outlet of the inverter and blocking the air duct, it is good to install a protective mesh cover above the air outlet of the inverter.
(4) When a control cabinet is equipped with two or more inverters, they should be arranged side by side as far as possible, and if it is necessary to choose the longitudinal arrangement of the daily inverter, a diaphragm should be installed between the two inverters to avoid the hot air from the inverter below entering the inverter above.
5、. According to the on-site environment, regularly organize the fan and air duct to avoid blockage; Especially in the textile profession, there is a lot of cotton wool, which should be sorted out regularly; However, it should be noted that it is strictly forbidden to operate with electricity when tidying up the fan air duct, and pay attention to safety.
6. Regularly check the ventilation and heat dissipation equipment of the inverter to ensure normal operation, especially the self-contained fan of the inverter, so how to determine whether there is a problem with the fan?
(1) Check the appearance of the fan to see if the power cord of the fan has fallen or been damaged; See if the fan blades are broken;
(2) Listen to the fan for abnormal sounds;
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Delta successfully held a seminar on new technologies for electronic power
From May 23 to 25, 2019, the Delta Power Electronics Technology Application Seminar, hosted by Delta Group of Zhejiang University, was held at the KONE Hotel in Wujiang, Jiangsu. Experts and professors from the power electronics technology industry from all over the world and 360 teachers, students and practitioners from more than 10 key universities such as Tsinghua University and Zhejiang University.
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The appearance of the instrument is a comprehensive product of a variety of science and technology, with a wide variety of varieties, wide application, and constantly updated, with a variety of classification methods. According to the intention and use of the use of the main measuring instrument, car appearance, tractor appearance, marine appearance, aviation appearance, navigation instruments, control instrument ...
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Touch screen controls the inverter step – Delta
1. The touch screen is controlled by PLC inverter
1. At present, the general control of the inverter needs to choose PLC to communicate with the inverter, read the information of the inverter, and then the touch screen communicates with the PLC to complete the control of the inverter to start, stop, and monitor the operation of the inverter.
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VFD center power electronics and control mode
1) Power electronic equipment power electronic equipment is in the circuit to play the effect of on-off and complete a variety of converter equipment, VFD is the installation of this converter, so it is with the development of the inverter equipment and unfold, the quality of the inverter equipment depends on its on-off ability, accept the on-off current and amount...
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A brief description of the selection of Delta inverters
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1：VFD-EL，VFD-S，VFD-L，VFD-C200
Voltage 220V, 380V, power scale 100W-7.5kw
The above series are Delta's simple inverters, commonly known as economical inverters, which are used for small fan pumps, food and medical ...
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Basic parameter setting of special inverter for wind turbine - Delta
1. Control mode:
i.e. speed control, torque control, PID control or other methods. After the control method is adopted, static or dynamic identification should generally be carried out according to the control accuracy.
2. Minimum operating frequency:
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How to quickly master Delta servo?
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 steel sheet, so that it can be produced by the stator coil.
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The reason for the abnormal operation of Delta's inverter
There are many setting parameters of the inverter, and each parameter has a certain selection scale, and the inverter can not operate normally due to the improper setting of a single parameter is often encountered in the application, therefore, the relevant parameters must be correctly set.
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The basic methods and steps of inverter debugging - Delta inverter
1. No-load energizing test of inverter
1. Ground the grounding terminal of the inverter.
2. Connect the power input terminal of the inverter to the power supply through the leakage maintenance switch.
3. Check whether the factory display window of the inverter is normal, if it is incorrect, it should be reset, no ...
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Common problems of VFD control motors - Delta
Question 1. Why use a VFD to control the motor?
Speaking of this question, let's first take a brief look at these two devices. The motor is a rational load, which hinders the change of current, and a large change in current will occur when it is started. VFD, which is actually made up of a rectifier inverter circuit, ...
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Delta's inverter power-on debugging method
After the inverter is installed, disconnect the output of the inverter, use the diode file of the digital meter to measure the input and output of the inverter before the power is not turned on, ensure that there is no short circuit, and then turn on the working power supply of the inverter.
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How to choose Delta's servo motor
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The reason why the circuit breakers of multiple stages trip together is Delta
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Delta's inverter fault warning solution
Product series: CP/CH/CT/C2000/C200/MS300/MH300/VE/ED/VJ
Fault Codes:
noCL
Fault clarification:
The lack of oil is correct
Solution:
1. Check the fuel level of the fuel tank
2. Check whether there is any leakage on the oil road.
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Delta's inverter is powered on and commissioned
After the installation of the Delta inverter is completed, disconnect the output of the inverter, use the diode file of the digital meter to measure the input and output of the inverter before the power is not turned on to ensure that there is no short circuit, and then turn on the operating power supply of the inverter.
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The impact of inverters on motors – Delta inverters
1. Overvoltage
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Inverter power-on panel without display fault analysis - Delta
In the inverter problem, it is often encountered that the energized panel does not appear. Generally speaking, the problem of the inverter panel not showing up is usually caused by three parts, one is the poor contact of the contactor, the second is the control panel of the inverter, and the third is the damage of the power module that supplies power to the control panel.
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The inverter needs to be equipped with a braking resistor-Delta
The inverter is equipped with a braking resistor, mainly to consume part of the energy on the DC bus capacitor through the braking resistor to avoid the voltage of the capacitor being too high. Theoretically, if the capacitor stores a lot of energy, it can be used to release it to drive the motor to avoid energy waste, but the capacity of the capacitor is limited.
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