1) Find out the basic parameters and appearance of the equipment that needs to be replaced. The basic parameters include the rated operating current, the capacitance of the capacitor, the resistance value of the resistor, the value of the GTR Darlington device (current amplification factor), the switching characteristics of the IGBT (including IPM) device, and the saturation voltage. The shape requirements include the external scale, terminal position and device method, etc., and then replace the required equipment according to the same requirements.
2) All connectors should be recorded or marked when disassembled to avoid misplacement during replacement or rehabilitation.
3) The contact surface between the power equipment and the radiator should be evenly coated with thermal grease and fastened with screws.
* In most cases, the machine is in operation, and when the machine is not running, the inverter needs to be properly kept.
* In most cases, the machine is in operation, and when the machine is not running, the inverter needs to be properly kept.
1) Storage
The room should be dry, no direct sunlight, no corrosive gas, and no dust; The relative humidity is 20%-90% and there is no frost; The temperature is between -10 and 30 °C (if the temperature is about 40 °C, the storage period should not exceed 6 months; About 50°C, the storage period does not exceed 3 months).
2) Maintenance
If there is no need to add leakage for a long time, the withstand voltage decreases, that is, the deterioration is accelerated (the higher the temperature, the faster the deterioration), therefore, at least once a year, the external power supply is added, so that the correction power-on time is 30-60min, the characteristic is that only the inverter monomer is energized (do not have to be connected to the motor), and the input end of the Shanghai Yaobang inverter can be connected to the power supply.
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Reynolds-5G empowers the paper industry to improve quality and efficiency of the industrial IoT control system
From September 23rd to September 25th, 2020, the 2020 China International Paper Technology Exhibition was held in Hall D1 of Suzhou International Expo Center.
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Inverter: The right inverter to use - Reynolds
Low pressure issues
The VFD reports a low voltage issue when the drive's DC link voltage drops below 62% of the nominal level at the high setting (480 Vac) and 50% of the nominal value at the low setting (400 Vac).
The +10% and -15% voltage tolerances in most manuals are the ones that claim to be ...
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Replacement of spare parts for frequency converters – Reynolds
In order for a VFD to operate reliably for a long time, it is necessary to repair the electronic components in the VFD on a regular basis and replace the primary components of the VFD according to the service life.
1. Cooling fan
The VFD power module is the most heat-generating device, and its ...
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The internal structure of the inverter is the role of Reynolds
The inverter is mainly composed of rectifier (AC to DC), filtering, inverter (DC to communication), braking unit, drive unit, detection unit and microprocessor unit.
The inverter adjusts the voltage and frequency of the output power supply by the internal IGBT break, and ...
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Inverter control loop wiring taboo - Reynolds
1. The wires laid out in the inverter control circuit should be separated from the main circuit cable (power line), so as to avoid the harmonic disturbance components on the side of the main circuit of the inverter from polluting the inverter control circuit;
2. Due to the faulty signal of the inverter and ...
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Reynolds soft starter fault code and fault handling
Reynolds soft starter fault code
Instantaneous stop -F 01 Instantaneous stop terminal 7 to terminal 10 open
TOO LONG STARTING TIME -F 02 STARTING TIME IS TOO LOW AND THE STARTING TIME IS TOO LONG (GREATER THAN 60S)
Overheating -F 03 Start too often, reduce the number of starts
Input out of phase -F 04 ...
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Two Reynolds technologies were included in the "2020 Water Conservancy Technology Key Promotion Catalogue"
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Lightning protection measures for Reynolds frequency converters
The lightning protection measures of the inverter equipment are another important peripheral measure to ensure the safe operation of the inverter, especially in the area where lightning is active or in the lively season, this problem is particularly important.
Today's inverter products are generally equipped with mines.
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The structure of the low-voltage circuit breaker - Reynolds
Low-voltage air circuit breaker, also known as active air switch or air switch, belongs to the switch electrical appliance, is used when the circuit is overloaded, short circuit and undervoltage can actively break the circuit of the electrical appliances, can also be used as infrequent start of the motor or opening and closing circuit, low-voltage air circuit breaker has an all-round circuit breaker ...
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How to measure a frequency converter with a multimeter – Reynolds
How to use a multimeter to measure the quality of the inverter, it needs to be noted that for personal safety, it is necessary to ensure that the machine is powered off, and remove the inverter input power line R, S, T and output line U, V, W before operation! First of all, the multimeter is hit to the "secondary pipe" file, and then through the multimeter ...
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Parameter setting of acceleration and deceleration time of Reynolds universal inverter
The acceleration time of the Reynolds inverter is the time required for the output frequency to rise from 0 to the high frequency, and the deceleration time is the time required to decrease from the high frequency to 0. Generally, the frequency converter uses the frequency setting signal to rise and fall to confirm the acceleration and deceleration time. The rise of the frequency setting must be limited when the motor accelerates.
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The way to set the parameters of the inverter - Reynolds
There are many setting parameters of the inverter, and each parameter has a certain range of choice, and the inverter can not work normally due to the improper setting of a single parameter in use, therefore, the relevant parameters must be set correctly.
...
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The inverter has no short-circuit protection for the reason – Reynolds
Short-circuit maintenance is a function of equipment connected between the power supply and the load, which can effectively disconnect the short-circuit point from the power supply when the load side is short-circuited. If an equipment has a short-circuit maintenance function, it must have a certain short-circuit breaking ability; And a device with the ability to break in a short circuit ...
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Inverter speed regulation method - Reynolds
1. Pole change logarithmic speed regulation method
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Inverter leakage solution - Reynolds
1. The cause of the leakage problem
Some sites use frequency converters to control the motor, which will present the problem of leakage, and the leakage voltage ranges from tens of volts to 200 volts. In view of this problem, the reasons for this shortcoming are theoretically expounded and stated as follows.
Depend on...
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Parameter setting of acceleration and deceleration time of Reynolds universal inverter
The acceleration time of the Reynolds inverter is the time required for the output frequency to rise from 0 to the high frequency, and the deceleration time is the time required to drop from the high frequency to 0. Usually, the inverter uses the frequency setting signal to rise and fall to confirm the acceleration and deceleration time. When the motor accelerates, the rise of the frequency setting must be constrained ...
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Inverter maintenance and undervoltage fault handling - Reynolds
In the repair of the inverter, we often hear about overpressure problems, but underpressure problems are also common problems encountered in the use of inverters. The reason is that the main circuit voltage is lower than the lower limit caused by the maintenance action or the damage of a rectifier bridge or the instantaneous power failure of the power grid, and the input is flat. Inverter after-sales ...
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Water pump inverter pressure adjustment method - Reynolds
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PLC and inverter communication mode
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AC servo motor with inverter control method - Reynolds
Because the inverter and servo are different in performance and function, and the use is not very different, it is not possible:
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