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 the output signal of the multi-function contact, the terminal may drive the high-voltage communication contactor/relay, so it should be connected to the terminal or contact of other control loops to avoid high-voltage breakdown;
3. In order to avoid the malfunction of the disturbance signal, the shielded wire or twisted wire with strong anti-disturbance ability should be selected when wiring the low-power control loop of the inverter (such as the wire used by the sensor under the PID control function);
4. The wire length of the inverter control loop is mostly 50m as the reference base point (in some cases, the value is 100m, mainly related to the wire cross-section, material, signal strength and other elements used), when the wiring distance exceeds the length, the relay circuit or relay should be used to expand the signal;
5. When crimping the inverter to control the circuit wire, special attention should be paid to the polarity of the analog signal to avoid the polarity of the inverter to form damage to the inverter's auxiliary control electronic circuit;
6. In the case of the inverter being energized, it is not possible to use the digital multimeter with the buzzer function gear (the output voltage of this gear is higher than that of other gears) to measure the on/off of the control loop, so as to prevent the power in the digital multimeter from being transmitted from the meter pen to the inverter control terminal, causing malfunction!
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Method for measuring the quality of frequency converter modules – Reynolds
1. Test rectifier circuit:
To the P end and N end of the DC power supply inside the inverter, adjust the multimeter to the resistance X10 gear, the red watch rod is connected to P, and the black watch rod is separated from R, S, T, and there are tens of ohms of resistance in normal times, and it is basically balanced. Instead, connect the black watch rod to the P end, and the red watch stick will be ...
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Reynolds inverter parameter settings
The use of Reynolds inverters in industrial production is very important, in addition to speed regulation, soft start effect, the important thing is to be able to save energy. There are many functional parameters of Reynolds inverter, and there are generally dozens or even hundreds of parameters for users to choose. In practice, it is not necessary to ...
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The reason for using frequency conversion speed regulation - Reynolds
Variable frequency speed regulation can be used in most motor drag occasions, because it can provide accurate speed control, so it can easily control the rise, descent and variable speed operation of mechanical transmission. The use of frequency conversion can greatly improve the efficiency of the process (the variable speed does not depend on the mechanical part) and at the same time ...
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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;
3. Press the FUN button to confirm at this moment, and adjust the entry parameters to the required value;
4. After the adjustment is completed, press the WR storage button, and then the panel will display the ...
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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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Features of Reynolds high-voltage frequency converters
RNVH-A series high-voltage inverter adopts multi-unit series multi-level technology, which is attributed to high-high voltage source inverter, which can directly input 6KV/10KV and direct 6KV/10KV output. Taking the 6KV series as an example, each phase is connected in series by 5 power units, and each power unit is isolated by the input transformer.
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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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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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How to deal with the inlet water of the inverter - Reynolds
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 it is in the unpowered state ...
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Introducing the Reynolds JJR8000 series of intelligent soft starters
JJR8000 series of intelligent motor soft starter is the use of power electronics skills, microprocessor skills and modern control theory skills to produce today's international first-class starting equipment, the product can constrain the starting voltage of the asynchronous motor when starting, can be used in fans, water...
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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 ...
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The role of frequency conversion technology in work equipment - Reynolds
Because inverters are widely used, there are many differences in the corresponding types and specifications. We are broadly divided into two categories: voltage and current. The current type of inverter products is characterized by the use of a large inductor as the energy storage link in the middle DC link, and the reactive power will be buffered by this inductor. ...
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Frequency converters need to be replaced regularly – Reynolds
The inverter is composed of many electronic parts, such as semiconductor components, etc., in the application and protection involves the replacement of a related component, because of the composition or physical characteristics of the inverter, it will deteriorate in a certain period of time, which will reduce the characteristics of the inverter, and even ...
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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.
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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 ...
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Difference Between Soft Starter and Inverter – Reynolds
Soft starters and frequency converters are two completely different products. The inverter is used in the local area where speed regulation is required, and its output not only changes the voltage but also changes the frequency at the same time; A soft starter is actually a voltage regulator, which is used when starting a motor, and the output only changes the voltage and does not change the frequency. Change...
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Precautions for the coordination of PLC and inverter - Reynolds
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.
PLC ...
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The soft starter output is out of phase fault
Soft Starter Repair Problem: F 04 (Input Phase Loss):
There are several factors that cause this problem, some of which are listed below:
(1) Check whether the wiring between the incoming power supply and the motor is loose;
(2) Whether the output is connected to the load, and whether the load is matched with the motor;
(3) ...
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Reynolds JJR5000 introduction to soft starters
The cost performance of Reynolds JJR5000 soft starter is relatively high, which is mainly reflected in the following aspects:
1. The price is more reasonable: compared with other similar products, the price of Reynolds JJR5000 soft starter is more affordable, and the price is in a more advantageous position among the products of the same level.
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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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