Installing a variable-frequency drive (VFD) on the power frequency motor can complete the precise control and speed regulation of the motor, and improve the power and accuracy of the progressive motor. However, if it is not properly used and used, the following damages may occur:
Motor overheating: The voltage and frequency of the VFD output are variable, and if the motor is not set properly or does not conform to the characteristics of the motor, it may cause the motor to overload or the internal temperature of the motor to be too high, and then damage the motor or shorten its service life.
Electromagnetic disturbance: The high-frequency current and electromagnetic waves output by VFD will disturb the surrounding electrical equipment, which may cause abnormal operation or problems of other equipment.
Oscillation and noise: Changes in the voltage and frequency of the VFD output will cause motor oscillation and increased noise, which may affect the normal operation of the equipment and the working environment of the personnel.
Safety incidents: Incorrect equipment and the use of VFD may cause safety incidents such as motor short circuit, electric shock, fire, etc., and then endanger the lives and wealth of personnel.
Therefore, when installing VFD on the power frequency motor, the appropriate VFD and sensor should be selected, and the correct parameter setting and debugging should be suspended according to the rated parameters and characteristics of the motor to ensure the safe and reliable operation of the equipment. At the same time, in the process of equipment and operation, the relevant safety specifications and operating procedures should be followed, and sufficient inspection and testing should be suspended to ensure the normal operation of the equipment and the safety of personnel.
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Renault is available in a variety of product ranges
JJR1000系列：
JJR1011；JJR1017；JJR1022；JJR1030；JJR1037；JJR1045；JJR1055；JJR1075；JJR1090；JJR1115；JJR1132；JJR1160；JJR1200；JJR1250；JJR1320；JJR1400；JJR1500；JJR1600 ...
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Reynolds product range models
JJR1000系列：
JJR1011；JJR1017；JJR1022；JJR1030；JJR1037；JJR1045；JJR1055；JJR1075；JJR1090；JJR1115；JJR1132；JJR1160；JJR1200；JJR1250；JJR1 ...
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Operating procedures for Reynolds frequency converters
Bypass cabinet: The cabinet is equipped with high-voltage inlet and outlet isolation switches QS1 and QS2. Among them, QS1 is a single-pole single-throw variable frequency incoming knife switch, and QS2 is a single-pole double-throw power frequency and variable frequency outgoing knife switch. The bypass cabinet is a high-voltage environment, please investigate the status of the live display and electromagnetic lock to ensure safety before ...
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Reynolds drive control panel description
1. FUN button; Press the FUN button to enter the settings menu F00;
2. Press and hold the up button or down button to scroll to the code that needs to be set;
3. Press the FUN button to confirm at this moment, and adjust the entry parameters to the required value;
4、 ...
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Introduction to soft starters and their relationship with frequency converters - Reynolds
When the high-power motor starts, the current is large, which will cause the grid voltage to be seriously shaken, in order to deal with this problem, the general requirements for speed regulation are not high, and the soft engine can be used to reduce the voltage and start. However, the drop in the starting current when the step-down is started will also make the starting torque drop significantly.
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Reynolds EPS emergency power supply routine maintenance
1. EPS the first use of the emergency power supply, the battery pack should be charged continuously for 48 hours after discharging protection;
2. EPS emergency power supply to keep the whole machine dry, clean, free of dust and foreign objects, wipe with a soft cloth after shutting down, and strictly ...
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The reason why the inverter controls the motor – Reynolds
Q1: Why should I use VFD to control the motor?
When it comes to this issue, let's take a brief look at these two devices. The motor is an inductive load that hinders the change of current, and when it is started, a large change in current is generated. VFD, which is actually made up of a rectifier inverter circuit, ...
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a. Add the internal impedance of the power supply of the inverterIn general, the internal impedance of the power supply equipment can play a role in buffering the reactive power of the DC filter capacitor of the inverter. This internal impedance is the short-circuit impedance of the transformer. When the power supply capacity is smaller than the inverter capacity, the internal impedance value is relatively large.
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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:
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Reynolds inverter code function description
F09 second acceleration time 0.10 - 999.9sec; 5.0sec； △ The first acceleration and deceleration parameters and the second acceleration and deceleration parameters are switched by terminal X3 (see F55);
F10 second deceleration time 0.10 - 999.9sec; 5.0sec； △ The first acceleration and deceleration parameters and the second acceleration and deceleration parameters ...
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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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Operating instructions for the Reynolds control panel
1. FUN button; Press the FUN button to enter the settings menu F00;
2. Press and hold the up button or down button to scroll to the code that needs to be set;
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The main failure mode of mechanical parts – Reynolds
The top failure modes of mechanical parts:
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Ways in which mechanical parts fail: overall cracking, plastic deformation, corrosion, abrasion, gluing, and touch exhaustion
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Frequency converter overcurrent problem treatment - Reynolds
General treatment methods for inverter overcurrent problems:
The output side of the inverter is a PWM voltage waveform, and after passing through the motor winding, the output current is approximately a sine wave, and lags behind the voltage by a phase viewpoint, which is determined by the power factor of the motor. The output current of the inverter passes through ...
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The reason for the large fluctuation of harmonic parameters in the harmonic test of the output harmonic test of the inverter
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At the top of the list, the signal is a stable periodic signal.
Second, it is necessary to perform harmonic analysis according to the integer multiple of the period of the stable periodic signal.
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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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Under the current production conditions, when the inverter is used to form an automatic control system for control, in many cases, it is necessary to choose PLC and inverter to match the use, such as bearing cleaning, packaging paper printing, PCB board production, etc.
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Key points for the selection of Reynolds servo motors
Each type of servo motor has additional torque, maximum torque and servo motor inertia and other parameters in the standard items, each parameter and load torque and load inertia must have a relevant connection, the output torque of the servo motor should meet the requirements of the movement conditions of the load organization, such as the speed of the acceleration ...
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Problems between the inverter and the motor – Reynolds
1. The power and temperature rise of the motor
Regardless of the method of the inverter, different degrees of harmonic voltage and current occur during operation, so that the motor runs under non-sinusoidal voltage and current. Rejection of material introduction, taking the sine wave PWM type inverter that is now widely used as an example, ...
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