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 is accelerating, the rise rate of the frequency setting must be constrained to prevent overcurrent, and when the motor is decelerating, the fall rate must be constrained to prevent overvoltage.
The parameter setting process of the acceleration and deceleration time of the general-purpose Reynolds inverter
General-purpose Reynolds inverter speed up time setting requirements: the acceleration current is constrained below the overcurrent capacity of the inverter, so that the overflow does not cause the inverter to trip.
The parameter setting process of the acceleration and deceleration time of the general-purpose Reynolds inverter
The key to setting the deceleration time of the general-purpose Reynolds inverter is to prevent the smooth circuit voltage from being too large, and not to cause the regenerative overvoltage to stall and trip the Reynolds inverter. The acceleration and deceleration time of the general-purpose inverter can be calculated according to the load, but in the debugging, it is often used to set a longer acceleration and deceleration time according to the load and experience, and observe whether there is an overcurrent and overvoltage alarm through the start and stop motors; Then the acceleration and deceleration setting time is gradually shortened, and the optimal acceleration and deceleration time can be confirmed by repeating the operation several times according to the criterion that no alarm occurs during the work.
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Introduction and features of Reynolds soft starters
Reynolds soft starters include soft starters for high, medium and low voltage motors, including JJR1000 series, JJR2000 series, JJR5000 series, and RNB3000 series frequency converters. Reducing the starting power supply avoids voltage drops and voltage dips in the power supply. Smooth start-up avoids product damage. ...
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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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Abnormal handling of inverter series reactor - Reynolds
Capacitor series reactors generally adopt epoxy glass fiber multi-encapsulated parallel structure, according to the characteristics of the device site, three-phase vertical stacking, three-phase horizontal "△" and three-phase horizontal "-" type distribution.
The substation in the southern area ...
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Wiring of the main circuit of the inverter - Reynolds
(1) Inverter three-phase communication input terminal (R, S, T)
The power input terminal is connected to the three-phase communication power supply through the circuit breaker of the circuit breaker for line protection, regardless of the connection phase sequence. It should be noted here that the three-phase communication power supply must not be directly connected to the inverter output ...
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Inverter power modification method - Reynolds
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...
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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 inverter protects the motor - Reynolds inverter
1. The output of the inverter for overvoltage maintenance has the function of voltage detection, and the inverter can actively adjust the output voltage, so that the motor does not bear the overvoltage, and the motor runs within the set voltage range.
2. Undervoltage maintenanceWhen the voltage of the motor is lower than 90% of the normal voltage (some are set to 85% ...
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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.
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Advantages of the inverter vector control system - Reynolds
Dynamic "fast response" DC motors are rectified constrained and excessively high di/dt is not allowed. The asynchronous motor is only constrained by the capacity of the inverter, and the multiple of the forced current can be very high, so the speed echoes quickly, generally reaching the millisecond level, which has surpassed the DC motor in terms of speed.
At low frequencies ...
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Analysis and repair of inverter failure cases - Reynolds
1. The inverter can not speed up the frequency increase when it starts with load
The 1366S-BR 040 inverter carries a load of 37 kW fan motors. During the trial operation, it was found that the inverter could not speed up the frequency increase normally, and the HIM display was speeding up. The inverter only swings at 1-4 Hz, and the motor emits a buzzing ...
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Inverter dust handling – Reynolds inverters
1. Plan a special inverter room: When the power of the inverter used is large or the number is large, a special inverter room can be planned. The doors, windows and cable holes in the room should be sealed to prevent dust from entering; It is necessary to plan air filtration equipment and circulation channels to adhere to the normal circulation of indoor air ...
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How to control the torque of the inverter vector according to the system - Reynolds
A brief introduction to the progress of the inverter in terms of torque:
This function adds the output voltage of the inverter so that the output torque of the motor is proportional to the square of the voltage, so as to improve the output torque of the motor. Improve the skill of insufficient torque at low speed output of the motor, and use the "vector manipulation" ...
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Soft-start starting method – Reynolds
1) Ramp boost soft start. This starting method is simple, does not have current closed-loop control, and only adjusts the conduction angle of the thyristor to make it add a certain function with time. The disadvantage is that because there is no current limit, in the process of motor starting, sometimes a large impulse current is generated.
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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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Two Reynolds technologies were included in the "2020 Water Conservancy Technology Key Promotion Catalogue"
In May 2020, Reynolds was recommended by relevant departments to apply for the Ministry of Water Resources's "2020 Key Promotion and Guidance Catalogue of Advanced and Practical Water Conservancy Technologies".
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Control method of Reynolds inverter
The fulfillment device commonly used in the industrial field of Reynolds inverter has good speed regulation performance and simple and convenient operation method. Therefore, it is widely used in the automation system.
Typical wiring method for the main circuit of a Reynolds frequency converter
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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 external configuration of the inverter is solved - Reynolds
With the improvement of the degree of automation of packaging machinery, packaging machine inverter (hereinafter referred to as VFD) plays an increasingly important role in packaging machinery. Capsule filling machine, high-speed tablet press, bottling production line, aluminum-plastic packaging machine, cartoning machine, each equipment will use VFD, mainly ...
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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:
1) In the case of speed control and torque control, the general frequency converter is not very high, and there are also frequency converters that are used to react signals in the upper position to form a closed loop.
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The main circuit of the inverter is composed of Reynolds
When it comes to inverter repair, it's not enough to understand the above fundamental circuits, but also to understand the following primary circuits. The main circuit is mainly composed of rectifier circuit, current limiting circuit, filter circuit, braking circuit, inverter circuit and detection and sampling circuit.
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