1. Technology: (PC or PLC) is used to make the equipment complete the intelligent constant pressure variable supply water supply according to the requirements of water supply and fire protection;
2. High efficiency and energy saving: the system can set the pressure according to the demand, and the system actively adjusts the speed of the pump and the number of pumps according to the set pressure, so that the equipment can run in the best condition of high efficiency and energy saving;
3. Stable water supply pressure: the system completes closed-loop control, and can actively adjust the difference between the set pressure and the system pressure, so that the pressure remains constant;
4. Stable operation: The system is actively controlled by the inverter or inverter plus intelligent controller, and the operation is extremely simple;
5. Extend the life of the motor and water pump: each pump is soft start, which eliminates the impulse current during starting. Each pump is activated in cycle, so that the backup pump will not rust or wear out due to long-lasting unnecessary use. Complete regular inspections of fire protection;
6. Perfect protection function: with short circuit, overcurrent, overvoltage, overheating, overload and other protection, if the pump is running, it will take the initiative to stop working and alarm output; The system has the functions of self-inspection, fault judgment, fault recall, fault appearance, and active start of the standby pump;
7. Small flow sleeping function: It can be connected to the subordinate small pump, so that the system can run at night or other small flow conditions, actively close the main pump, open the subordinate small pump, and then prevent the waste caused by opening the high-power water pump;
8. Operation function: the programming and setting of the inverter and the controller are convenient and simple, and simple to grasp;
9. Hand active switching function: equipped with manual switch control, which can ensure the safe continuous operation of the equipment;
10. Centralized control function: through the serial port, it can be connected to the computer to complete the direct control of the computer network.
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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 ...
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Misunderstanding of inverter selection - Reynolds
1. In order to save power, the inverter is selected
Many manufacturers and salesmen praise how high the power-saving rate of the inverter is, and the user also believes that it is true, and the inverter is selected at a high cost simply in order to save electricity, but the results are greatly disappointed.
Whether the inverter can save power after using it is determined by the load driven by it.
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The factor that causes the breakdown of the inverter – Reynolds
1. Overpressure leads to brake pipe breakdown.
The so-called overvoltage of the inverter refers to the fact that the inverter voltage formed due to various reasons exceeds the additional voltage, which is concentrated in the DC voltage of the inverter DC bus.
The overvoltage alarm generally appears at the time of shutdown, and its main ...
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Characteristics of isolation transformer at the input end of AC power supply - Reynolds
a。 When the third harmonic and disturbance signals are severe, a barrier transformer can be used to eliminate the third harmonic and disturbance signals.
b。 The use of barrier transformers can generate new neutrals and avoid the abnormal operation of equipment due to defective neutrals in the grid.
...
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The heat dissipation method of Reynolds switching power supply
1. Transfer heat pipes for heat dissipation.
In many applications, the heat generated from the base steel plate of the power module is transferred through the heat transfer components to the distant heat pipe surface. In this way, the temperature of the base steel plate of the power module will be equal to the temperature of the heat pipe heat dissipation surface, the temperature of the heat transfer parts, and the temperature of the two contact ...
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The Reynolds booth was presented at the Industrial Automation Exhibition Center in Parma, Italy
Shanghai Reynolds Technology Co., Ltd. is an enterprise specializing in the design and production of high and low voltage soft starters, high and low voltage variable frequency speed regulation, intelligent electrical, new energy electrical and high and low voltage power transmission and transformation equipment, which are widely used in electric power, metallurgy, petroleum and petrochemical, military, mining, chemical industry, ...
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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:
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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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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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Reynolds inverter power selection
The system power is equal to the product of the power of a general-purpose inverter and the power of the motor. As long as both work efficiently, the system power will be higher. From the perspective of power, when choosing VFD power, you should pay attention to the following points:
VFD ...
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Reynolds drives use the most energy-efficient method
As an electronic electric, the inverter itself also consumes electricity (about 3-5% of the additional power). A 1.5 hp air conditioner consumes 20-30W of electricity, which is equivalent to the length of a lamp. The inverter works under the power frequency and has the function of saving electricity, which is practical.
But the conditions are:
At the top of the list, great success ...
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The relationship between Reynolds motion control and frequency converters
Motion control has obvious period characteristics, it is a variety of high-tech generalization, used to push industrial automation, office automation and home automation to a higher stage. Nowadays, motion control is mainly composed of variable frequency drive (VFD), electric motor, control ...
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Inverter maintenance power-on test instructions - Reynolds
First, the inverter is not repaired and the power test is tested
(1) Inverter repair test rectifier circuit
At the two ends of the inverter to detect the internal DC power supply, P and N ends, adjust the multimeter to the resistance RX10 gear, the red watch pen is connected to the P end, and the black watch pen is connected to R, S, T, and there are tens of ohms under normal conditions.
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Characteristics and Discrimination of Resistance Damage - Reynolds
I often see many beginners tossing on the resistor when overhauling the circuit, and it is dismantling and welding, in fact, it is repaired a lot, as long as you understand the damage characteristics of the resistor, you don't have to bother.
Resistors are the most numerous in electrical equipment ...
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Inverter selection conditions and precautions - Reynolds
1. When selecting the inverter, select the inverter with the appropriate control method according to the load characteristics
In addition to the inverter manufacturing process, it is also important to choose which control method of the inverter. The control method of the inverter is mainly divided into two types: open-loop control and closed-loop control. In the meantime, the open-loop control method ...
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The difference between inverter motor and ordinary motor - Reynolds
1. The heat dissipation system is different: Generally, the cooling fan in the fan is in the same line as the fan movement, while the two are separated in the inverter motor. Therefore, when the frequency conversion of the fan is too low, it may burn out due to overheating.
2. Frequency conversion ...
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The inverter cannot adjust the frequency solution - Reynolds
1. The acceleration moment is too short.
Theoretically, the longer the acceleration time, the stronger the load lifting capacity. If the acceleration time is set too short, some VFDs will show an overcurrent or overload, overtemperature alarm, while others will not, and will only be stuck in a certain frequency band.
2.The V/F ratio is too large
Some of this ...
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Precautions for installation of Reynolds low-voltage inverters
One. Safety Precautions
1. First of all, it is necessary to have certain electrical professional knowledge, and understand the job site, understand the equipment status, and have certain electrical operation technology.
2. Determine the voltage level of the equipment (such as low-voltage AC380V) and whether it is low-voltage ...
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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.
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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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