1. Yaskawa inverter G5-G7 power correction: enter the menu and then return to 02-04 after A01=4 is the power data, and the factory voltage of rehabilitation has also changed after the change.
2. Sanken inverter IHF-IPF-SHF series: enter the CD900 parameter and enter 365 to confirm (change 2 times) and then find CD202 and enter 365 to see the power and voltage parameters, 4-5.5 indicates 400V-5.5KW, first correct the voltage and then confirm the power correction, after the completion press the confirmation button and exit.
3. Schneider inverter power correction: Schneider inverter will alarm CFF after powering on after replacing the motherboard, and then press the ENT button continuously for 3 times to recover and leave the factory, and the power voltage is actively matched.
4. Siemens 420-430-440 inverter power correction: after changing the motherboard, the power-on appears normal, but many parameters are gone, then enter the No. 3 menu to change the value inside to 3 and then confirm, find the P0201 parameter, and then change the value inside to 0 after the power off does not appear and then power on, you will find that the display appears ---- stay for about 5 seconds to recover normally. At this time, you will find that all the parameters are there, and the power voltage is exactly matched to the machine.
5. Emerson inverter EV2000 power correction: enter the menu, find FU-000 and correct the value inside to FA58, and then change the code in FU04, 11=7.5KW12=11KW13=15KW21=90KW
6. Delta's inverter power correction method: enter the parameter 00-07 (old version 57522, new 33582), then find the 00-02 parameter and change it to 2 to show err, and then change the value in 00-00 to correspond to the power code on the clarification book.
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Frequency characteristics of Reynolds frequency converters
a. Output frequency scale. The output frequency scale that can be controlled by the general inverter, the lowest starting frequency is generally 0.1Hz, and the highest frequency is different according to the functional indicators of the inverter, generally 400Hz, and some models are 650Hz. No matter how high the output frequency is, it depends on the scale of the high-frequency inverter.
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How to determine the frequency of start-up – Reynolds
Generally, most motors start to speed up from 0Hz, but in some special cases, it is necessary to start directly from a certain frequency. At this time, the frequency output of the VFD at the moment of activation is the activation frequency. In general, you need to set the activation frequency in the following situations.
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Reynolds inverter overhaul process
1) Query and query fault phenomena. The fault phenomenon of the inverter is varied, for example, the same type of problem may have different problem phenomena, and different types of problems may have the same kind of problem, which brings difficulties to find the problem. However, the problem phenomenon is the fundamental basis for repairing the inverter ...
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The main failure mode of mechanical parts – Reynolds
The top failure modes of mechanical parts:
Failure: The mechanical part cannot complete its normal function within the planning and booking period and under the regular conditions.
Ways in which mechanical parts fail: overall cracking, plastic deformation, corrosion, abrasion, gluing, and touch exhaustion
General ...
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PLC and inverter communication mode
1. The switching signal of PLC controls the inverter
The PLC can control the start, stop and reset of the inverter through the program; It can also control different combinations of high-speed, medium-speed and low-speed terminals of the inverter to achieve multi-stage speed operation. However, because it is controlled by switching ...
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Application misunderstandings and drawbacks of inverter and countermeasures - Reynolds
Misunderstanding: connect electromagnetic switches and electromagnetic contactors in the output circuit of the inverter
In actual use, some occasions require the use of contactors for frequency converter switching: such as when the frequency conversion is faulty, switch to the power frequency operation, or when the one-to-two method is adopted, a motor is faulty, and the variable frequency is used.
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Key points for the selection of AC contactors - Reynolds
1. Select varieties according to the above series according to the purpose and requirements of use
Note that the main circuit load type is strictly differentiated, whether it is DC or communication.
The communication contactor is different from the DC contactor, and is only suitable for DC-1 to DC-5 loads when used for DC loads.
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The difference between a soft starter and an inverter – Reynolds
The inverter changes the output frequency and voltage together, that is, changes the n0 on the motor running curve, so that the motor running curve moves parallel downward. Therefore, the inverter can make the motor reach its maximum torque with a small starting current, that is, the inverter can start the heavy-duty load.
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Inverter control method - Reynolds
The output voltage of low-voltage general frequency conversion is 380-650V, the output power is 0.75-400kW, and the operating frequency is 0-400Hz. Its control methods have gone through the following four generations. 1U/f=C Sinusoidal Pulse Width Modulation (SPWM) Manipulation MethodIts Characteristics ...
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The lightning protection method of Reynolds inverter
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 lightning ...
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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 ...
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The working principle of the motor soft starter – Reynolds
Motor soft starter is the primary selection of power electronics skills and microprocessing skills and modern control theory and design and production of advanced level of new engine equipment, motor soft starter mainly has anti-interference function, high reliability, multiple protection functions and other characteristics, according to these characteristics of electric ...
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The difference between inverter motor and ordinary motor – Reynolds
Inverter motor - used for special occasions with inverter, it is different from the general motor in that a strong cooling fan is added. And the power of the fan comes from the independent power supply, can not be from the main motor out of the line, the effect of the strong cooling fan is to ensure that the motor at low speed...
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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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Inverter installation and heat dissipation treatment - Reynolds
The inverter has power loss during operation and converts it into heat energy, which increases its own temperature. Roughly speaking, the power loss of every 1kVA inverter capacity is about 40W-50W. Therefore, when installing the inverter, it is necessary to consider the heat dissipation of the inverter, and how to run the inverter.
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Reynolds soft starter features:
The Reynolds soft engine is a new type of software launcher that can assist users in quickly launching and closing the computer system. It was developed by Reynolds and its main function is to provide a fast, safe and reliable software launcher that can assist users in quickly launching and closing ...
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The item that needs to be maintained after the inverter is shut down – Reynolds
1. Use a vacuum cleaner with a plastic nozzle to thoroughly clean the inside and outside of the inverter cabinet to ensure that there is no excessive dust around the equipment.
2. Check the ventilation and lighting of the frequency conversion room, and the ventilation equipment can operate normally.
3. Check the inverter ...
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The cause of the damage of the inverter - Reynolds inverter
What are the causes of inverter damage?
First, the heat dissipation of the inverter is not good
In fact, we all know that too high a temperature can have a damaging effect on any device, just like the human brain, too high a temperature can also burn out the brain ...
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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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Methods and steps of frequency conversion speed regulation - Reynolds
Frequency conversion speed regulation is to change the power supply frequency through the frequency converter, and then adjust the motor speed to improve the operation efficiency of the electric drive system. Depending on the current, VFDs can be divided into AC-DC-AC type and AC-AC type. At present, the most widely used in China is the AC-DC-AC type.
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