Natural heat dissipation methods are generally used for heat dissipation of small-capacity inverters, because their operating environment should be well ventilated and free of dust and floating objects. The dragging objects of this type of inverter are mostly household air conditioners, CNC machine tools, etc., and the power is small.
There is also a type of [anti-explosion] inverter heat dissipation, if the capacity is small, you can choose the general type of radiator, the heat dissipation area is required to be as large as possible within the promised range, the distance between the heat dissipation ribs is smaller, and the heat radiation area is increased as much as possible. For large-capacity [explosion-proof] inverters, it is recommended to use heat pipe radiators if natural heat dissipation methods are used.
Another method of inverter heat dissipation is "through-wall" natural heat dissipation, which reduces the heat by 80%, which is characterized by the fact that the main body of the inverter and the heat sink are blocked by the electric control box, which greatly improves the heat dissipation effect of the inverter components.
The advantage of this inverter heat dissipation method is that the radiator can be cleaned punctually, and it can ensure that the protection level of the electric control box is higher. Like the common cotton spinning enterprises due to too much cotton wool, often simply block the ventilation channel of the inverter, resulting in the overheating of the inverter, and the natural heat dissipation through the wall can be a good solution to this problem.
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Solve the inverter fault method - Sunland inverter
Motherboard faults are often manifested as faults that are difficult to visually identify, such as system startup failure and screen invisibility.
You can use a brush to gently brush off the dust on the motherboard, in addition, some plug-in cards and chips on the motherboard are in the form of plugs.
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What should I do if I forget the password?
With the passing of time, the inverter has now fully penetrated into the work of major industries. In our daily use, we will inevitably encounter all kinds of problems. For example, I forgot the cipher code of the inverter.
See here ...
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The reason for the explosion of the inverter module - Senlan inverter
1. Condensation The temperature difference in the workshop is large, and the inside of the inverter presents condensation.
2. Impact load. The load fluctuates greatly, and the output current of the inverter suddenly increases, resulting in module damage.
3. The inverter is overloaded in the start, ...
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Overload trip analysis of an inverter
The motor is able to rotate, but the operating current exceeds the rated value, which is called an overload. The fundamental reflection of overload is that although the current exceeds the rated value, the fluctuation of the excess is not large, and it generally does not constitute a large inrush current.
1. The main reason for overload
(1) Excessive mechanical load ...
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Differential overhaul method of inverter - Senlan
For the dual requirements of anti-interference and galvanic isolation, the pre-circuit of the output current detection or voltage detection of the inverter usually uses the "matching" circuit of the linear optocoupler device and the differential amplifier to complete the transmission mission of the detection signal. The circuit of the differential amplifier is based on the current detection circuit ...
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The control mode of low-voltage general-purpose inverter - Sunland inverter
Voltage Space Vector (SVPWM) Manipulation Method:
It is based on the premise of the overall generation effect of the three-phase waveform, with the intention of approximating the ideal circular rotating magnetic field trajectory of the motor air gap, generating the three-phase modulation waveform at one time, and controlling it by approaching the circle with inscribed polygons. In practice, ...
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Inverter maintenance method - hope sunland
1. Look
After taking over a faulty inverter, remove the inverter shell and clean it up, and carefully investigate the appearance, shape, and integrity of the relevant components on the circuit board with both eyes according to the type of inverter fault. This method is about charging resistors, filter electrolytic capacitors, IG ...
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Sunland inverter soft start advantages
Sunland inverter and soft start is a first-class, reliable and reliable motor control system, which is able to meet the needs of various applications. The advantages of expected Sunland inverters and soft start are:
1. Performance: Expect Sunland inverter and soft start...
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Inverter protection and braking force issues – Sunland
1. What is regenerative braking?
If the motor decreases the command frequency during operation, the motor becomes an asynchronous generator and works as a brake, which is called regenerative (electrical) braking.
2. Can you get more braking power?
Regenerated from the motor ...
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The reason why the inverter damaged the motor - Senlan
The presentation of inverters has brought a revolution to industrial automation control and motor energy saving. Industrial production is simply inseparable from the inverter, even in the daily livelihood, elevators, inverter air conditioning has become a part of the insistence, inverter from the beginning into all corners of production, subsistence. However...
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The difference between a voltage signal and a current signal
The general voltage in industry is 0... 5(10)V or current 0(4)... 20mA is used as an analog signal transmission method, and it is also a method often used by program control machines. So what is the difference between the transmission method of voltage and current, and when to choose what method, the following will be briefly introduced.
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Senlan has won a number of awards in the inverter industry
On December 10, 2014, the inverter branch of China's electrical appliance industry association and the national inverter speed regulating equipment standardization skills committee professional annual meeting was held in Shanghai, 120 representatives from more than 80 professional enterprises attended the meeting, and expected Senlan to also serve as the vice chairman of the inverter branch ...
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It is hoped that Senlan will become the most powerful shore power solution provider in China
Founded in 1998, Hope Lansen is a national high-tech enterprise in the fields of energy conservation and environmental protection, new energy, transmission control and intelligent equipment in China, integrating R&D, manufacturing, system integration and customer service. Its products cover high and low voltage frequency conversion control systems, automated production lines and robot transmission systems.
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Calculation method of braking resistance and power of inverter - Sunland inverter
(1) Brake usage rate ED%
Brake usage rate ED%, that is, the brake usage rate in the clarification book ED%. The brake utilization rate ED% is said to be the deceleration time T1 divided by the deceleration cycle T2, and the brake utilization rate is mainly to allow the braking unit and the brake resistance to have sufficient time to dissipate ...
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There is a problem with the inverter-controlled motor pressing the stop button
What happens when the inverter-controlled motor presses the abort button, and the motor is not controlled to speed up?
1. If it is a newly installed inverter, it is generally necessary to consider the wiring problem, you can first change the parameters to switch to the panel control, the panel is given the frequency, and then see if the inverter operation will appear in this ...
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Senlan inverter motor failure analysis
1. The motor slows down too slowly
1) If the deceleration time is set too long, reduce the deceleration time
2) Install a braking resistor
3) Add DC braking
2. The motor is overheated
1) The load is too large, and the practical moment has exceeded the ...
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Hope Sunland inverter introduction and common models
It is hoped that Sunland inverter is mainly used in three-phase asynchronous AC motor to control and adjust the motor speed. Sunland inverter is mainly composed of microprocessor, including rectification, filtering, inverter, brake, drive, detection, etc. In order to achieve the purpose of changing the power supply voltage, according to the actual needs of the motor...
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Advantages of Senlan vector control system
Dynamic "fast response" DC motors are rectified constrained and excessively high di/dt is not allowed. The asynchronous motor is only constrained by the capacity of the inverter, and the multiple of the forced current can be very high, so the speed echoes quickly, generally reaching the millisecond level, which has surpassed the DC motor in terms of speed.
At low frequencies ...
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The control performance standard of the inverter cabinet
The control specifications of the inverter cabinet include reliability, accuracy, safety, environmental habits and versatility, etc., which are important guarantees to ensure the normal operation and safe production of the inverter cabinet control system.
Reliability specification: The control system should have high reliability and can be used for a long time.
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The reason for adding a frequency converter to the crane control system - Senland
Prior to the introduction of frequency converters, overhead crane operators operated the cranes using contactor-based controls. For low-cycle cranes, the system is equipped with a single or two-speed motor. For cranes with higher load cycles, they use so-called wound rotor motors.
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