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Introduction to the classification method of inverter maintenance faults
1. How to distinguish between heavy faults and light faults
According to the occurrence time of inverter faults, we can divide the types of faults into two categories: sudden faults and intermittent faults:
(1) The sudden fault of inverter repair refers to the failure of the equipment when it is running, without warning.
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The cause of the leakage problem of Sunland inverter
1. The cause of inverter leakage
According to the inverter to control the operation of the motor, the three-phase electricity is supplied to the inverter bridge (IGBT) through the filter capacitor through the rectification, and then the operation of the motor is controlled by the three-phase electricity with adjustable output frequency and voltage of the inverter.
We all know that the three-phase stator winding of the motor ...
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The comprehensive application of Sunland's high-power boiler feed pump has added another classic
Recently, the "General Contracting Project of Boiler Feed Pump Frequency Conversion Technology Transformation Project of Yili Power Plant of Guoshen Group" undertaken by Hope Sunland has been successfully implemented and connected to the grid, adding another classic to the comprehensive application of Sunland's high-power boiler feed pump.
In 2020 ...
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Excessive capacity of the inverter causes harm to electrical equipment - Senlan inverter
(1) The harmonic current generated will directly cause the additional heating of the motor, so that the stator of the motor surpasses the additional temperature rise of the motor itself, so that the additional output capacity of the motor will be greatly reduced.
(2) The current output of the inverter ...
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The eight forbidden areas of inverter control loop wiring - Senlan
1. The wires of the inverter control circuit should be strictly distinguished from the main circuit cable (power line) and placed separately. This will help prevent the inverter's control circuit from being disturbed by harmonics in the inverter's main circuit.
2. To separate the connection of the inverter from the terminals or contacts of other control circuits, ...
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Precautions for the use of industrial touch screen all-in-one machine
1. The contact screen all-in-one machine adopts the new contact identification technology, and the user only needs to touch it lightly on the contact screen without passing the pressure sensing to complete the operation. Care must be taken not to use too much force or sharps to scratch the surface of the contact screen.
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What are the peripheral equipment for inverter selection - Senlan inverter
After the inverter selection is completed, it is necessary to consider whether other peripheral equipment needs to be equipped according to the actual situation of the site. The peripheral equipment for frequency converter selection mainly includes circuit breakers, reactors, contactors, braking resistors, etc.
1. Circuit breaker
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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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Sunland's measures to reduce inverter failure
According to the test, the service life of the inverter is halved for every 10°C increase in the operating ambient temperature. For this reason, in daily use, a reasonable maintenance cycle and guidelines should be formulated according to the actual operating environment and load characteristics of the inverter.
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Senlan brought its products to the Guangxi International Sugar Technology and Equipment Exhibition
Recently, it is expected that Sunland will successfully participate in the 8th Guangxi World Sugar Industry Skills and Equipment Expo with excellent inverter products. According to the expected Sunland company leakage, the exhibition of the World Sugar Industry Skills and Equipment Expo, throughout the exhibition to domestic equipment manufacturers, there is no lack of foreign outstanding enterprises, exhibitors ...
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I hope that Senlan will make a wonderful appearance at the 22nd (Shanghai) Industry Fair
From September 15th to 19th, the 22nd China International Industry Fair was held at the National Convention and Exhibition Center (Shanghai). As the first national industrial exhibition held under the normalization of epidemic prevention and control this year, the theme of this expo is "Intelligence, Interconnection: Enabling the New Development of Industries".
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Inverter control scheme for fan and water pump - Senlan inverter
There are many control methods for inverters for fans and pumps, which can be selected according to specific conditions. Here are a few common scenarios.
(1) Manual adjustment This is the simplest control method, that is, the operator instructs according to the instrument, ...
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Common maintenance methods of inverter - Senlan inverter
1. Step-by-step decreasing method
The so-called gradual reduction method is to gradually reduce the scale of the problem through the analysis of the problem phenomenon and the identification of measurement parameters, and finally implement it to the specific circuit or component that causes the problem. In essence, it is a certainty, a negation, a negation, a negation, a final ...
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Sunland proposed a multi-machine parallel high-voltage shore power supply system solution
Air pollution in port cities mainly comes from cargo loading and unloading operations and emissions from ships calling at ports; Shore power connection refers to the closure of the auxiliary engine during the port of the vessel, and the shore power is supplied by the port.
At 9:08 on December 25, 2018, the world's first ...
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Motor starting mode - Senlan inverter
The inverter is a motor control (speed regulation) device that uses the on-off effect of power semiconductor devices to convert the power frequency power supply to another frequency.
Composition 1:
1. Rectifier unit: convert the communication electricity with fixed operating frequency into DC ...
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Precautions for inverter wiring - hope Senlan
1. The inverter itself has strong electromagnetic disturbance, which will disturb the operation of some equipment, so we can add a cable sleeve to the output cable of the inverter.
2. The control line in the inverter or control cabinet is spaced at least 100mm, and the power cable is at least 100mm.
3. In the purchase of inverter ...
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Senlan SV1000 servo drive wearing parts replacement
The wearing parts of the driver mainly include electrolytic capacitors for filtering and cooling fans, and their service life is closely related to the environment and maintenance of the operation.
Depending on the operating moment, the user can determine whether a wear part needs to be replaced.
Cooling ...
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Inverter load type - Sunland inverter
(1). Constant torque load
Different speeds, load resistance and torque base are stable. The output power is directly proportional to the rotational speed. Such as belt conveyors.
(2). Constant power load
Different speeds, stable load power base ...
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Inverter water inlet maintenance method - Sunland inverter
The first step is not to turn on electricity! First open the inverter panel, wipe the inverter dry, and then use a hair dryer to dry the display, PC board, push board, power components, fans, etc., with 95% alcohol, scrub the components with 95% alcohol, and dry the hair dryer with cold air.
Step 2: After an hour, use alcohol ...
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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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