First, the maintenance of the inverter must first check whether the sound in the operation of the motor has changed abnormally, including, whether the motor is in operation to form a sensation.
2. Check whether the natural environment of the inverter installation has changed. For example, whether the operating temperature is normal. Anyone who understands the maintenance of Delta inverters should know that the operating temperature of inverters is generally specified in the range of -10°C to +40°C, and it is advisable to go up and down 25°C.
3. Check whether the heat exhaust fan of the inverter is in normal operation, for example, whether the heat exhaust safety channel of the inverter is Xiaochang, and whether the main parameters of the inverter are normal in indicating the amount of current, operating voltage and frequency on the indication control panel.
Fourth, the inverter maintenance also has to check whether the inverter is high temperature. You can use an infrared thermometer to check whether the radiator of the inverter is high temperature or whether it has a strong odor. It is also necessary to check whether there are common fault alarms in the operation of the inverter.
5. The maintenance of Delta's inverter should also ensure that the filter screen of the air inlet pipe inside the low-pressure complete set of equipment is exempted on time on a daily basis. Keep the control box and inverter in excellent cleaning condition for a long time. Because it can reasonably eliminate the area dust on the inverter, it can also avoid the dust from entering the inverter, reasonably remove the oil stains of the inverter fan, and reduce the occurrence of heat exhaust problems.
Delta's DVP-1 22KW inverter has no reflection when powered on, no display on the actual operation control panel, and the 24V operating voltage of the control terminal is 0. Identify the common faults of the power supply system circuit of the switching power supply circuit or the switching power supply circuit. There is no 530V communication voltage on both sides of the energy storage capacitor of the DC circuit.
Further check that the circuit breaker FU of the pre-charging circuit has long been melted, resulting in the switching power supply circuit unable to get input power and the whole machine stops. The reason for the full consideration of melting is that the thyristor in the three-phase rectifier circuit is not triggered to open and off, and the pre-charged power supply circuit is subjected to current impact, so the FU is melted.
After replacing the FU with a new one, the power is turned on, and the communication voltage cannot be checked at the trigger terminals of the three thyristors. When the short contact is with VT3 in the power generation circuit, the trigger terminals of the three thyristors are all triggered by the operation voltage, and the three thyristors are turned on. Check that the collector junction of VT3 has long been destroyed by open circuit, and after replacing VT3 with power tube BU406, common faults are eliminated.
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Debugging Delta's inverter method
1. Acceleration and deceleration time
The acceleration and deceleration time is usually confirmed by the rise and fall of the frequency setting signal. In the commissioning of Delta inverters, it is often used to set a long acceleration and deceleration time according to the load and experience value, and the frequency rise rate of the motor must be constrained when it accelerates to avoid overcurrent. When slowing down, ...
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Routine maintenance of Delta UPS power supply equipment
The inspection personnel should record the operation status, voltage and current values of the UPS every day, and deal with the problems in a timely manner.
Check whether the traffic lights are working properly;
Keep the outside of the battery clean;
Check the operating status of the battery pack ...
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Introduction and features of Delta PLC
Delta's programmable controllers, also known as Delta programmables, delta programmable controllers, delta programmable controllers, etc., are electronic devices specially designed by Delta for the industrial automation category to complete digital operations. Delta's PLC uses programmable memory to store execution logic inside it.
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Basic parameter setting of special inverter for wind turbine - Delta
1. Control mode:
i.e. speed control, torque control, PID control or other methods. After the control method is adopted, static or dynamic identification should generally be carried out according to the control accuracy.
2. Minimum operating frequency:
That is, the minimum speed of the motor. When the motor is working at low speed, the ...
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Delta's inverter power-on debugging method
After the inverter is installed, disconnect the output of the inverter, use the diode file of the digital meter to measure the input and output of the inverter before the power is not turned on, ensure that there is no short circuit, and then turn on the working power supply of the inverter.
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Delta's touch screen downloads programs and communication settings
1. Touch screen download program
(1) Device software DOPSoft;
(2) The communication line uses a square port data line;
(3) device drive;
(4) Configuration screen;
(5) In the Stuff, select Download All Materials.
2. Communication settings
(1) Touch screen settings
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The benefits of using an inverter – Delta inverter
1. Speed regulation of general motor: By changing the input voltage and frequency of the three-phase asynchronous motor, its speed can be controlled. Generally, when the motor is at low speed, the temperature rise becomes larger due to the decrease in the power of the cooling fan, and the motor load should be reduced according to the frequency.
2 ...
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Introduction to Delta Inverter VFD-C200 Series
Delta's VFD-C200 series inverters adopt the design concept of ultra-miniature structure: small size, compact structure, reliable performance, and optimal heat dissipation design, which is convenient for users to install and debug. Taking into account the possibilities of the industrial production environment, this inverter is made of special materials and complies with the requirements of the IEC...
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Delta's A2 server maintenance location controller is faulty
Delta's A2 series servo system is one of the more common and used servers on the market today, and the following describes the fault details of the azimuth controller in the repair of Delta's A2 servo drive and the corresponding repair methods
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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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Several veins of the inverter circuit - Delta inverter
1. Vibration circuit: the leakage-source and R4 of the main winding N1 and Q1 of the switching transformer are the channels of the power supply operation current; R1 provides the starting current; The self-powered windings N2, D1, and C1 constitute the power supply voltage of the vibrating chip. The normal operation of these three links is the prerequisite for the power supply to vibrate.
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Delta's active front-end and inverter's coordination
The popularity of frequency converters has brought significant energy savings to industrial applications. However, the high-frequency switching signal generated by the inverter is easy to cause electromagnetic interference and affect the power quality. Especially in industries with large loads such as lifting and elevators, it is becoming more and more obvious.
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Delta successfully held a seminar on new technologies for electronic power
From May 23 to 25, 2019, the Delta Power Electronics Technology Application Seminar, hosted by Delta Group of Zhejiang University, was held at the KONE Hotel in Wujiang, Jiangsu. Experts and professors from the power electronics technology industry from all over the world and 360 teachers, students and practitioners from more than 10 key universities such as Tsinghua University and Zhejiang University.
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Introduction to Delta's PLC maintenance knowledge
1. Delta's PLC power on running light does not light up, and the ERROR flashes, the reason may be: no program
2. Delta's PLC cannot communicate with the computer, which may be: RS23 port is broken
3. Delta's PLC power light does not light up: The power supply is bad
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The reason for the abnormal operation of Delta's inverter
There are many setting parameters of the inverter, and each parameter has a certain selection scale, and the inverter can not operate normally due to the improper setting of a single parameter is often encountered in the application, therefore, the relevant parameters must be correctly set.
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Set the parameters when reading and uploading the Delta PLC program
Open Delta's programming software, and use WPLSOFT to do the demo here;
First, click on the settings and then click on the communication settings in the settings, select the communication mode, communication port, communication baud rate, communication station number, etc.
After the setting is finished, click OK to automatically close the pop-up window.
In the dish ...
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The impact of inverter cable design on the life of motor cables
Reflected waves that affect the impedance mismatch between the cable and the motor are pervasive in all AC VFD applications. The severity of the problem depends on the length of the cable, the rise time of the PWM (Pulse Width Modulation) carrier, the voltage of the VFD, and the magnitude of the impedance difference between the motor and the cable.
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VFD center power electronics and control mode
1) Power electronic equipment power electronic equipment is in the circuit to play the effect of on-off and complete a variety of converter equipment, VFD is the installation of this converter, so it is with the development of the inverter equipment and unfold, the quality of the inverter equipment depends on its on-off ability, accept the on-off current and amount...
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Precautions for long-term idle use of Delta inverter
If the inverter is to run the equipment again after being shelved for more than half a year, the probability of damage may be greatly increased due to many factors such as the placement environment, the service life of the inverter, and the load rate, and the failure usually presents the following problems:
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Pulse control wiring method for Delta servo drives
Parameter settings
P1-XX are the basic parameters
P1-00 pulse method selection, *** bit selection is 2, that is, pulse train + direction
P1-00 signal logic picking, the third digit is selected as 0 or 1, which is the positive logic or anti-logic, X0XX or X1XX
P1-01 Control form selection, pick ...
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