1) Whether the ambient temperature is normal or not, it is required to be in the range of -10-+40 °C, and it is better to be about 25 °C. whether the humidity meets the requirements, and whether the ventilation and heat dissipation of doors and windows are outstanding; Whether the lower air inlet and upper air outlet of the inverter are dusty or blocked due to excessive dust.
2) Whether the output current, voltage, frequency and other data displayed on the display panel of the inverter are normal, and whether the control button and adjustment knob are out of order.
3) Whether the display part is normal, whether the characters displayed in the display panel are clear, and whether there are short characters.
4) Use a temperature measuring instrument to detect whether the inverter is overheated and whether there is any peculiar smell.
5) Whether the inverter fan is operating normally, whether there is abnormal noise, overheating, discoloration, peculiar smell and abnormal vibration, and whether the heat dissipation air duct is clear.
6) Whether there is a fault alarm during the operation of the inverter.
7) Check whether the AC input voltage of the inverter exceeds the maximum value, the limit voltage of the 380V inverter is 418V (380V×1.1), if the input voltage of the main circuit exceeds the limit voltage, even if the inverter is not running, it will damage the inverter circuit board.
8) Check whether the inverter, motor, transformer, reactor, etc. are overheated and have peculiar smell, whether the sound of the motor is normal, whether the voltage of the main circuit and control loop of the inverter is normal, whether the capacitor is overheated, whether the appearance is bubbling or deformed, and whether the safety valve is broken.
9) Whether the operation of the heater in the inverter cabinet is normal.
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Features of Schneider elliptical gear flowmeter
Elliptical gear flowmeter (also known as displacement flowmeter, gear flowmeter), classified as a positive displacement flowmeter, is a class with high accuracy in the flow surface. It uses a mechanical measuring element to continuously cut the fluid into a single known volume part, and according to the measuring chamber, it is repeated and repeated.
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The inverter has a problem supplying power to the motor – Schneider
A frequency converter is a device that converts power to other frequencies of power supply. The power frequency of our country is 50Hz, in the field of motors, in order to change the speed of the motor, or other performance changes, many motors choose inverter power supply.
The inverter is a supporting operation with the inverter motor.
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Schneider drives copy replication parameters
1. Copy and copy through the Chinese panel. Older inverters, if they support Chinese panels, such as ATV71, ATV61, etc., support VW3A1101 panels, they can use the proprietary 'open/save as' parameter on the panel to copy and copy, and the newer ATV610, ATV630, ATV930, ...
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Diode selection and substitution method - Schneider
1. Selection of detection diode
Point-contact germanium diodes are generally used for detection diodes, such as 2AP series. When selecting, the detection diode with high operating frequency, small reverse current and large forward current should be selected according to the specific requirements of the circuit. Despite the ...
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The difference between Schneider miniature circuit breaker and leakage switch
1. Definition of miniature circuit breaker
The electrical occupation is referred to as MCB, which is suitable for communicating 50/60Hz additional voltage 230/400V, additional current to 63A line overload and short circuit maintenance, and can also be used as infrequent operation conversion of the line under normal circumstances.
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Schneider UPS Energy Saving Method
1. Flexible planning for on-demand expansion
Generally, the construction of data centers is not in one step, and the expansion of the next few years will be considered, and the UPS capacity is generally considered to be larger in the design.
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Schneider inverter knowledge points
1. Use the analog output port to indicate the motor frequency, when the motor frequency is 50Hz, why is the output only 16mA?
Due to the maximum output frequency parameter of the inverter "TFR", the factory default value is 60Hz. So when the inverter output is 50Hz, the analog output is 16mA. At this time, only ...
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Schneider inverter disturbance and treatment method
A. Methods of Communication:
(1) Radiation disturbance
(2) Conduction disturbance
B. Immunity Methods
With regard to nuisance signals transmitted by radiation methods, they are primarily weakened by wiring and shielding the radioactive source and the disturbed lines.
About Tong ...
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The cause of leakage in the motor using the inverter - Schneider
1. The output of the inverter is controlled by PWM (pulse width modulation, similar to high-speed switching), so high-frequency leakage current will occur.
The PE points of the three transmission equipment of the inverter, the pre-power supply transformer and the motor must be connected together and then grounded consistently.
Frequency conversion...
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Schneider molded case circuit breakers NSX, CVS, EZD differences
1. NSX series is Schneider's high-end molded case circuit breaker, with the best performance in all aspects, and of course, the price is also the most expensive.
2. CVS series, which is the main series of Schneider, has the second best performance compared with the NSX series, but can meet the vast majority of applications, and the price is more affordable.
3 ...
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Schneider seizes the opportunity of e-commerce
Beijing, China, 24 August 2021 – Looking at the history of the logistics industry, the changes brought about by the development of e-commerce in recent years are rare. According to Digital Commerce 360, in 2020, United States customers spent $861.12 billion online, a year-on-year increase.
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Features of Schneider explosion-proof inverter boxes
1. Aluminum alloy shell or steel plate welding, plastic spraying on the surface;
2. Built-in inverters, circuit breakers, signal lights and other components produced by domestic or Schneider and other companies;
3. It mainly regulates the general three-phase difference by changing its output frequency.
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The upper and lower frequency parameters of the inverter - Schneider
The output frequency of the inverter set by the user according to the needs of the production process. For example: the original power frequency power supply of the fan motor is now transformed into frequency conversion speed regulation, you can set the given frequency to 50 Hz, and there are two ways to set it: one is to use the operation panel of the inverter to input the digital quantity of the frequency 5 ...
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The difference between Schneider and Siemens PLC
There are three main differences, namely: different uses, different products, and different characteristics.
1. Different use cases: The programmable manipulator produced by Siemens in Germany is also widely used in China, and has been used in metallurgy, chemical industry, printing production lines and other fields.
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Common maintenance problems for Schneider drives
1. Why is the inverter used for fan and pump loads to save energy?
According to the basic law of fluid mechanics, it can be seen that the fan pump load is a typical square rotation load, and its primary feature is that the speed n has the following relationship with the torque T and the load power P: T∝n2, P∝n3. ...
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Schneider improves plant performance with automated control
1. Engineering planning one by oneWith data at their fingertips and intelligent and sensitive functions, engineers can easily plan and test equipment, improve process availability, and easily complete system integration together – ultimately reducing the planning time by up to 25%.
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Precautions for external wiring of the inverter
In the process of connecting the line of the inverter, it is necessary to pay attention to the following aspects:
1. The power supply must be connected to the main circuit power terminal L1/R, L2/S, L3/T, if the power supply is connected to other terminals by mistake, the inverter will be damaged.
2. It is necessary for the grounding terminal to be well connected.
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Solutions to Schneider drive fault codes
PHF: 1. The power supply of the inverter is not right or the fuse is blown; 2. There is a transient problem in a certain phase. 1. Check the power connection and fuse; 2. Reset.
USF: 1. Power supply voltage undervoltage; 2. Instantaneous voltage drop; 3. The load resistor is damaged. 1 Check the power supply voltage; 2 Substitutions ...
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Schneider instrumentation maintenance precautions
1. When assembling and adjusting the appearance, the original position should be recorded for rehabilitation.
2. When repairing the appearance of precision instruments, if you accidentally bounce small parts away, you should first determine the position where you can fly down.
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How to choose the right inverter for the motor?
The inverter is an electric transmission element that is used in frequency conversion skills and microelectronics skills to control and communicate with the motor by changing the frequency and fluctuation of the power supply of the motor.
The birth of the inverter cabinet originated from the communication motor ...
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