Daily View Item 1:
Check whether the sound of the motor changes abnormally during operation, including whether there is vibration during the operation of the motor.
Project 2:
Check if the environment of the inverter unit has changed. For example, whether the ambient temperature is normal. Those who are familiar with the repair of Delta inverters should know that the operating temperature of inverters is generally required to be in the range of -10°C to +40°C, with about 25°C being the best.
Project 3:
Check whether the inverter cooling fan is operating normally, for example, whether the inverter's heat dissipation channel is dredged, and whether the current, voltage, frequency and other parameters of the inverter's display output on the display panel are normal.
Project 4:
Check to see if the inverter is overheating. For the inverter overheating, you can use an infrared thermometer to detect whether the heat sink of the inverter is overheated, or whether there is any peculiar smell. It is also necessary to check whether there is a problem alarm in the operation of the inverter.
Project 5:
During the repair and maintenance of Delta's inverter, the filter screen of the air inlet duct inside the electrical control cabinet should be cleaned regularly. Keep the control cabinet and inverter in a good clean state for a long time. Because this can effectively clean the dust on the surface of the inverter, it can also prevent dust from entering the inverter, effectively remove the oil stain of the inverter cooling fan, and reduce the appearance of heat dissipation problems.
Delta's inverter has no response when powered on, no display on the operation panel, and the 24V voltage of the measurement control terminal is 0, which can be identified as a power supply circuit problem of a switching power supply or a switching power supply. There is no 530V DC voltage at both ends of the energy storage capacitor of the power-on detection DC circuit, and the fuse FU of the pre-charging circuit is further detected to be fused, resulting in the switching power supply not getting the input power supply and the whole machine not working.
Considering that the fuse is due to the fact that the thyristor in the three-phase rectifier circuit is not triggered to turn on, the pre-charge circuit fuses the FU due to the impact of the operating current. After replacing the FU with a new one, the DC voltage cannot be detected at the trigger terminals of the three thyristors.
When the Delta inverter in the power generation circuit is briefly touched, the trigger terminals of the three thyristors have trigger voltage input, and the three thyristors are turned on. Check that the collector junction of Delta's inverter has been damaged by open circuit, and replace VT3 with power tube BU406 for troubleshooting.
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More on that
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The output of the inverter is not short-connected to the power frequency
1. To switch the motor of the power frequency, the parking method is set to free parking, and it is important not to park softly
2. Intercept the contactor of the motor from the output end of the inverter, and the control stop button and the inverter parking button are the same composite button, that is, when the inverter is pressed, the inverter parking will be followed by the contactor line.
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Debugging method of Delta servo motor
1. Initialize parameters
Before wiring, initialize the parameters.
On the control card: select the control method; Reset the PID parameter to zero; When the control card is powered on, the enable signal is closed by acquiescence; Save this condition to make sure that the control card ...
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The principle, composition and function of Delta's inverter
1. What is a Delta inverter?
Delta inverter is a device that converts the power supply (50Hz or 60Hz) into a communication power supply of various frequencies to realize the variable speed operation of the motor.
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Advantages of sensorless vector control - Delta inverter
Excellent open-loop speed control without slip compensation
There is high torque at low degree, so there is no need to supply too much torque to enhance c. Lower loss, higher power
Higher power echoes – especially for stepped loads
Big...
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Delta inverter repair steps
Delta inverters still have a certain influence in the industry, but even if the reputation is good, it will inevitably show some failures. Let's take a look.
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Principles of daily protection and maintenance of Delta inverters
1. Record the operation data and shortcomings of the Delta: The operation data of the Delta inverter and the motor should be recorded every day, including the output frequency, output current, output voltage, DC voltage inside the inverter, radiator temperature and other parameters, and compare them with reasonable data, so as to facilitate early detection of defects.
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DC motor speed regulation method - Delta
There are three speed regulation methods for DC motors: armature loop string resistance, armature voltage regulation and speed regulation, and weak magnetic field speed regulation. The three speed regulation methods can achieve stepless speed regulation.
1. Armature loop string resistance
The applied resistor is connected to the armature circuit.
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Comparison of three speed regulation methods for Delta DC motors
There are three speed regulation methods for DC motors: armature loop string resistance, armature voltage regulation and speed regulation, and weak magnetic field speed regulation. The three speed regulation methods can achieve stepless speed regulation.
1. Armature loop string resistance
The applied resistor is connected into the armature circuit to achieve the purpose of speed regulation.
Speed Direction: Add ...
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The reason why the circuit breakers of multiple stages trip together is Delta
Short-circuit maintenance (overload maintenance) is an important function of circuit breakers, and the reason why this function is achieved is that the circuit breaker senses the temperature in the circuit through a thermal iron plate. Once the temperature in the circuit is too high, it is transmitted to the mechanical mechanism in the circuit breaker for trip maintenance.
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The peripheral equipment of the inverter governor - Delta
When installing the inverter governor, it is necessary to first understand its use occasions and set up different peripheral equipment according to the needs of the site. The primary peripheral equipment of frequency governor is: air circuit breaker, electromagnetic contactor, communication reactor, braking resistor, DC reactor, output communication reactor, wireless ...
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Delta unveiled the ASDA-A2 series of AC servo motors and drives
New Delhi, September 2, 2010 – Delta Group, the world's largest supplier of switching power supplies and brushless DC fans, is committed to innovation, energy efficiency and environmental protection, and has launched a new and advanced high-performance ASDA-A2 series of servo motors and servo drives for motion control and networking in India.
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How to choose the right Delta inverter for the motor
Delta's inverter has made the motor drive system complete two hopes: first, the motor has completed the operation of higher power; The second is to make the motor controllable and prevent the problem of the big cow pulling the trolley. But the problem in front of the engineer is: there are so many types of motor loads, and the frequency converter ...
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Analysis of common faults of Delta servo motors
1. The shaft current of the motor is generated
The current in the shaft-housing-base circuit of the motor is called the shaft current.
Causes of shaft current:
1) Magnetic field asymmetry;
2) There is a wave in the supply current;
3 ...
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Introduction to Delta's RH series switching power supply
Delta's RH series switching power supply, RH series switching power supply is a high-quality power supply product series planned by Delta Power for industrial applications, with the characteristics of high rate, high reliability and high function. This series of products has a wide range of input voltages and can be applied to a variety of power input ...
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Debugging Delta's inverter method
In order to ensure the reliability of production, when Delta's inverter is planned to be equipped with power drive, in addition to meeting the power drive requirements, the remaining torque increases the consumption of active power. When using cost-effective Delta inverters to regulate the speed, if the flow requirements are reduced, by reducing the rotation of the pump or fan...
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The impact of grid quality on the life of the inverter – Delta
Inverter is a high-tech product, mainly composed of power electronic equipment and microelectronic equipment. The three-phase communication grid is connected to the input of the frequency converter. The input end of the inverter is a rectifier circuit, and the output end is a frequency conversion circuit. As a result, the voltages and currents on the input and output sides include abundant ...
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Analysis of the power-on trip problem of Delta inverter
In life and production, leakage switches are often used. But the inverter is not used much at some times. Most manufacturers often use leakage switches as the main switch when installing switches in the workshop. When the frequency conversion control is elected, the problem comes out, and the leakage switch is always tripped after a little moment...
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Delta's inverter energy-saving method
Delta's inverter energy-saving method is mainly manifested in the application of fans, pumps, and hoists. In order to ensure the reliability of production, all kinds of production machinery are designed with power drive, and there is a certain amount of surplus.
Power Factor Supplement ...
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The inverter has a built-in PLC function - Delta
PLC progressive scanning standard work preparation.
Abundant programming language: instruction statements; ladder diagram; SFC。
Abundant instruction statements: 45 instruction varieties, including 28 root instructions and 17 usage instructions.
350 step law capacity.
uS-level root directives ...
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Introduction to common models and parameters of Delta touch screens
There are many types of Delta contact screens, of course, the parameters of different types are different, and the most important product is DOP-B03S201. This product is a 4.3-inch screen, its aspect ratio is 16:9, the screen is made of TFT raw materials, and its resolution can reach 480X ...
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