Inverters are widely used in all walks of life, in a variety of applications, inverters will inevitably encounter rainy and humid climate, resulting in internal wetness, or accidentally into the water, in fact, as long as it is found in time, it can still be rescued.
If you find water in the unpowered state, the first thing to pay attention to is that it must not be powered on! Otherwise, it is very simple to short-circuit, burn the circuit board, and even blow up the machine. You can first open the inverter panel, dry the inside of the inverter with a dry towel or paper towel, and then use a hair dryer to dry the display, PC board, push board, power components, fans, etc., and wipe the above components with 95% pure alcohol (alcohol will take away most of the water in evaporation) and then dry with a hair dryer. After an hour or so, wait until it is almost dry, wipe it again with alcohol, and then turn on the hot air (low temperature) and blow it again.
Note: Focus on drying the following components: potentiometers, switching power transformers, displays (buttons), sequetters, contactors, reactors, fans (especially 220V), electrolytic capacitors, . For power modules, it is necessary to dry them many times at low temperatures, and switching power transformers, contactors, and power modules are the top priorities. Sometimes the module may look dry, but there is still water inside. After leaving it in a boring environment for a day, check it again to see if there is any resurgence of moisture, and dry the key components again. After drying, it is necessary to send and disconnect the power for the first time, depending on the response status of the inverter. If there is no abnormality, the power will generally be able to be used normally. In fact, as long as you pay more attention to protection, the inverter is not energized when it enters the water, and the inverter will generally not break.
If water is found to be in the power-on state, the power should be cut off at the first time. If there is no internal short circuit incineration, it can be compensated according to the above method. If there is a short circuit and burns out of the parts, it is best to find a professional inverter repair engineer to test and repair.
|
More on that
|
Advantages of frequency converters over soft start – Reynolds
(1) The starting torque is large and the power factor is high. Because the power factor of the motor is related to the working frequency, the power factor under the power frequency power supply is much lower than that under the low-frequency power supply when the motor is running at low speed. The inverter can control the motor from low frequencies and ...
|
|
Reynolds inverter E.oC3 constant speed operation overcurrent fault solution
Reynolds inverter RNB1000 series E.oC3 constant speed operation overcurrent fault solution
Reynolds inverter fault codes:
E.oC3
Reynolds inverter fault phenomenon/type:
Constant speed operation overcurrent
Possible causes of Reynolds inverter failure:
...
|
|
Germany core control appeared at the China International Industry Fair
It is human beings who have always been committed to making human-computer interaction safer, easier to use, and more efficient, which has made collaborative robots gradually become the main stream of shopping malls.
It is precisely because of the vigorous development of the collaborative robot industry that Synapticon Gmb ...
|
|
Features of electronic single-phase current transmitter – Reynolds
Single-phase current transmitter is a kind of electric power test substation developed for the power measurement of single-phase communication in motor experiments on the basis of motor experiment and testing technology research, in accordance with IEC and relevant national specifications for motor experiments. The use of advanced filtering technology, reasonable software algorithms, ...
|
|
Precautions for the use of frequency converters - Reynolds
In order to ensure the safe, efficient and reliable operation of the inverter, the following keys should be grasped when using the inverter:
1) It is necessary for the grounding terminal of the inverter to be firmly grounded, so as to effectively press the radio frequency disturbance and enhance the reliability of the system: the frequency conversion speed regulation system is best to use independent grounding, grounding resistance...
|
|
Applicable mode of inverter maintenance - Reynolds inverter
CNC cutting machine
1. Gradual reduction method
The so-called gradual reduction method is to narrow the scope of shortcomings step by step by elaborating the shortcomings and judging the measurement parameters.
|
|
Applications of Reynolds frequency converters
A frequency converter is a power electronic device that can change the frequency of an AC power source to control the speed and output power of a motor. Inverters are widely used in industry, aviation, metallurgy, petroleum, chemical industry, electric power and other fields.
|
|
Classification and working principle of Reynolds inverter
Classification of Reynolds frequency converters:
There are many classification methods for Reynolds inverters, which can be divided into voltage-type inverters and current-type inverters according to the classification of the main circuit operation method; According to the classification of switching methods, it can be divided into PAM operation.
|
|
Dust design considerations for frequency converters - Reynolds frequency converters
1) The air duct of the inverter cabinet should be planned reasonably, and the exhaust should be clear and smooth, so as to avoid the formation of vortex in the cabinet and the accumulation of dust in a fixed direction.
2) The top air outlet of the inverter cabinet should be equipped with a protective top cover to avoid debris from falling directly.
|
|
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 ...
|
|
Reynolds soft starter problem solving
1. The soft starter does not start and the fault-free code appears, perhaps because the control power supply is not connected, the solution is to check the power supply of the control power supply to see if the circuit connection is correct.
2. The motor starts when the motor announces a hum/no start signal, perhaps because of the thyristor/module ...
|
|
The breaking capacity of the industrial control appliance switch
Assuming Icu=60KA, then when a faulty current of 60KA is generated in the line, the circuit breaker can safely cut off the circuit without abnormal conditions such as contact welding and blasting. Pay attention to the extreme breaking ...
|
|
Reynolds inverter parameter problem
1. What are the factory recovery parameters of Reynolds inverter?
N600 = 100 (often press the WR button for 3-5 seconds), it is necessary to be in the shutdown state to be effective.
2. In the parameters of the N308 motor of the inverter, is the [motor leakage inductance reactance] specified sub-leakage inductance or rotor leakage inductance react?
Decide...
|
|
Introduction to the key components of the inverter - Reynolds
There are many kinds of components of the inverter, different components have different functions, and different components have different specializations! In addition to the composition and application of Aideley inverter, there are also key components of inverter to provide for the operation of inverter.
|
|
What inverter to choose what occasion - Reynolds
We need to ensure that the capacity of the inverter is matched. First of all, according to the nature of the load, the correct selection of the type of inverter.
When selecting the inverter, the current value of the actual 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 ...
|
|
Soft start uses common faults and solutions - Reynolds
In the process of daily use of soft starters, it is inevitable to encounter some improper use or failure of soft starters in the process of use
1. The user starts ...
|
|
The difference between the voltage type and the current type of inverter - Reynolds
Energy storage elements are different, the voltage type energy storage element is a capacitor, and the current type is an inductor. In fact, the general inverter uses power electronic circuits, which is a process of communication to DC - DC energy storage - DC to communication. It is also often said that the rectifier link --〉 energy storage link --〉 inverter ring ...
|
|
Protection feature of overcurrent trip - Renol
1. Maintenance objectives of overcurrent
In the frequency conversion speed regulation system, there are two devices: the frequency converter and the motor. The degree of tolerance to overcurrent is not the same. The planners of the production machinery decide on the capacity of the motor based on the principle of heat. That is, as long as the electricity ...
|
|
Motor overload fault solution - Reynolds
Causes of inverter failure:
1. The grid voltage is too low
2. The rated current of the motor is set incorrectly
3. The motor stall or load abrupt change is too large
4. Large horse-drawn trolley
Inverter solutions:
1 ...
|
|
Use the right power for the inverter – Reynolds
Low pressure issues
The VFD reports a low voltage glitch 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 ...
|
|
Contact
working hours
