From October 28th to 29th, the "First National Tailings Engineering and Comprehensive Utilization Skills Seminar" sponsored by the China Nonferrous Metals Society was successfully held in Dexing City, Jiangxi Province. Nearly 200 experts from relevant domestic planning units, scientific research institutions and enterprises such as China Nonferrous Metals Society, China ENFI, Jiangxi Copper, Beijing Institute of Mining and Metallurgy, University of Science and Technology Beijing and other relevant domestic planning units, scientific research institutions and enterprises attended the meeting.
At the meeting, it is expected that the technical engineers of Sunland made a wonderful report on the use of Sunland inverter in tailings treatment technology in combination with the development of tailings engineering and comprehensive utilization of tailings technology in China. Through the actual example, the use of Sunland inverter in the mine hydraulic rotation classification system is briefly described, and the energy-saving accounting is carried out according to the measured data of slurry pump (centrifugal pump), ball mill, pontoon ship and other equipment, and it is briefly demonstrated that after the selection of Sunland inverter, it not only satisfies the process requirements of the hydraulic rotator, optimizes the production index, improves the separation accuracy of the slurry, and shows the superior power-saving performance of frequency conversion speed regulation.
As a leading enterprise in the domestic inverter industry, Sunland has a history of 20 years and is one of the earliest enterprises engaged in the production and research and development of inverters in China, with products covering high, medium and low voltage inverter related products. Twenty years of concentration and persistence have created the excellent quality of Senlan. Driven by the core concept of "Boundless Excellence, Unlimited Expectations", Sunland's products have been widely used in electric power, metallurgy, cement, municipal, light industry, machinery manufacturing, petroleum, chemical industry and other occupations, and have been highly recognized by the majority of users for their many advantages such as stable operation, superior performance and significant energy saving.
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How to carry out frequency conversion of frequency converter - Senlan
(1) Rectifier. As one of the most important components of the inverter, the rectifier can convert the AC power into direct current. Its working method is more common to that of a battery charger or arc welder. It uses a diode bridge to limit the communication sine wave to only one direction.
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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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Inverter heat dissipation treatment in use - Sunland inverter
If you want to make the inverter last a long time, you must seriously consider the problem of heat dissipation. Because the failure rate of the inverter increases exponentially with the increase of temperature, the service life decreases exponentially with the increase of temperature. A 10 degree increase in ambient temperature halves the service life of the inverter. Thus...
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Precautions for inverter selection and capacity matching - Senlan
1. Select the inverter according to the load characteristics
Second, when selecting the inverter, the current value of the practical motor should be used as the basis for the selection of the inverter, and the rated power of the motor can only be used as a reference. Secondly, it should be fully considered that the output of the inverter contains higher harmonics, which will form the power factor of the motor.
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Inverter with no-load operation and commissioning - Senlan
(1) Set the power of the motor, the number of pole pairs, and check the operating current of the inverter.
(2) Set the maximum output frequency and base frequency of the inverter and set the torque characteristics of the motor. Pressure/Frequency (V/F) Operators ...
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Selection and capacity matching of inverter - Senlan
1. Select the inverter according to the load characteristics
Second, when selecting the inverter, the actual motor current value should be used as the basis for the selection of the inverter, and the extra power of the motor can only be used as a reference. Secondly, it should be fully considered that the output of the inverter contains higher harmonics, which will form the power factor of the motor.
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Common problems in the use of inverter - Sunland inverter
1. Please explain the maintenance function of the inverter?
(1) After detecting the abnormal situation, the correction action will be carried out automatically, such as overcurrent loss rate prevention, regeneration overvoltage stall prevention.
(2) After detecting the abnormality, the PWM control signal of the power semiconductor device is closed, so that the motor can park automatically. As...
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Limit switch wiring method - hope Senlan
Limit switch is an electromechanical control element used to detect the direction of the movement of the machine or equipment, and send a signal when the specific position is in a specific direction to control the operation or stop of the equipment. It is often used in industrial production processes, such as CNC machine tools, conveyors, loading and unloading robots, etc.
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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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The main circuit of the inverter application - Hope Sunland
There is a circuit breaker QF and a communication contactor KM between the power supply and the inverter, when the inverter does not need to be used for a long time. or when the equipment is overhauled, the circuit breaker is used as an isolation switch, which can block the power supply and ensure the safety of maintenance. It has maintenance functions such as overcurrent and undervoltage. The main power of the inverter ...
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It is hoped that Sunland inverter will help enterprises produce sustainably
With the rapid development of the national economy, the installed capacity of captive power plants and the planning of transmission and distribution networks have been expanding. After the power system fails, if the power supply cannot be quickly restored, it will cause huge economic losses and severe social impact. How to ensure the safety and stability of the enterprise, long-term production ...
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Analysis of the causes of bearing damage - Hope Sunland
In the process of using bearings, often due to some external factors cause some wear in the rotation of the bearing, and these bearing wear will be completely damaged in the addition of day by day, which requires our maintenance personnel to replace the bearing, and generally form a bearing.
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The cause of leakage of the inverter-controlled motor - Senlan
In some fields, the use of inverter to control the motor will present the problem of leakage, and the leakage voltage ranges from tens of volts to 200 volts.
According to the inverter control motor ...
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Sunland - inverter operation process and factory value restoration
The general operation process is as follows:
Enter the program through the operation panel and set the parameters, and set the relevant parameter groups such as the start-stop method, operation and control form according to the requirements of the industrial control. After confirming that the wiring is correct, the no-load power on test run and ...
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Heat dissipation method of small-capacity inverter - Senlan
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.
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Senlan inverter selection principle
1. Select the inverter according to the load characteristics, such as the load is constant torque load, you can choose Siemens MM440 inverter, ABB ACS800 series inverter, etc.; If the load is a fan or pump load, you can choose Siemens MM430 inverter, ABB ACS510 series inverter, etc.
2、 ...
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The difference between "braking" and "parking" of the inverter - Senlan
There are two ways to park a drive.
One way is called "free parking". It is to quickly "power off" the motor, so that the motor can slide and park by its own inertia force (OFF2 parking);
The other way is called "braking parking". So this "brake parking ...
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Commonly used motor protection method - Hope Sunland
1. Install a reactor at the output of the inverter: This method is the most commonly used, but it should be noted that this method has a certain effect on shorter cables (less than 30 meters), but sometimes the effect is not ideal.
2. In the inverter ...
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Frequency conversion speed regulation of several special motors - Senlan frequency converter
A. Wound rotor asynchronous motor
The rotor winding of the wound rotor asynchronous motor is a set of three-phase windings with star connection. The end points of the three-phase winding are connected to the three collector rings, which are connected to the brushes and the external resistor (for starting or speed regulation) through the collector rings. Select inverter ...
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Motor inverter principle and precautions for use - Senlan
The difference between a voltage converter and a current converter
Voltage inverter and current inverter are two different operating principles, for example, the operating principle of voltage inverter is mainly to regulate the voltage source, and the voltage source regulates the current to achieve the effect of conditioning, while the current inverter is a direct ...
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