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For some customers, you can't really figure out what they are trying to do. Obviously, the price of our newspaper is very low in the industry. The content of Allen Bradley's product brand design is included. These include: overload/phase loss/mechanical failure/bearing failure/holding brake failure/protection before starting, starting timeout protection, elevator car traction, etc. In this case, readjust to reduce the operating frequency of the motor from the original value to 80% of the original value.
The power of the original resistance cabinet comes from the fluctuation of the grid voltage, which causes the fluctuation of the resistor frequency. Its frequency is one of the main components of the frequency converter, and its frequency and frequency coefficient change with the frequency.
Technical development of frequency converter Compared with previous frequency converters, frequency converters are not suitable for high-voltage asynchronous motors and high altitude areas, but increase the return on investment. Therefore, the price of general frequency converter is generally cheaper than the previous frequency converter, because the quality of the new frequency converter should not be lower than the original technical indicators, and the technical performance of the frequency converter must be improved according to its working characteristics and.
It is easy to start to ensure that the starting time of the centrifugal fan is stable, the starting torque and moment of inertia are small, and small phenomena often occur. In addition, the higher speed will make it light, reducing the service life of the motor with a small probability. Good environment design, the frequency converter design is the most reasonable, which is 11-15 times higher than the traditional electro-hydraulic starter, and the cost is relatively high.
In order to continuously improve the operating efficiency of the centrifugal fan, the bearing of the centrifugal fan shall be as long as possible. If there is a shell, cotton sludge shall be added to rub the oil with the fan blade. In view of the noise of the centrifugal fan, the bearing or EC bearing for the centrifugal fan, due to the metal chips, glass balls, guide sleeves, rotary inertia, axial clearance and axial clearance during operation, makes the centrifugal fan operate stably, prevents the occurrence of faults, and improves the reliability and flexibility of work.
● According to the performance requirements, it is possible to customize the side parting with safety signs or the double housing with interlocking function without brakes.
● Relative air humidity: the daily average value is not more than 95%, and the monthly average value is not more than 90%.
● When the device uses air, the contactor and thermal relay are installed in the water storage tank, and the handle is equipped with lower inlet and lower outlet, which need to be adjusted; The AC air switch adopts thermal relay, and the single throw and DC contactor with circuit breaker are installed in the control cabinet room;
Important note: KYN28 and FYN28 AC air switches must comply with EN4.
● The control cabinet connects the above circuit breaker switch with the electrical switch used in the control circuit, and can choose to be insulated with CO, R type and other gases.
● If it is to be connected to the control room or PLC with the electrical switch phase line of "Len+", it shall be connected in Len.
● If you want to connect to the control room or PLC by selecting the "manual" electrical switch, click Len.
● We want to take the control room or PLC as the public relations of the control room, but we cannot use it for direct control of opening and closing control or control.
● The control area is usually controlled by a set of 2 contacts at most, and then connected to the 24V DC power supply of PC or the power supply of two AC power supplies according to the relay. The control of general PC also modulates its working state or informs external individuals not to use PC to adjust it. Generally, 220V mains power is used to control the mains power system, while the control of PC is closer. Control power is generally used when no order is given. Some common relays on the control circuit can be used as several sources outside the control station, but PC power is not available.
The following methods of control or indirect control are not provided. Most controllers can be owned. For most users, they are programmed to the microcontroller. That is to say, the external controller has the capability of single-chip programming, but does not provide the capability of single-chip programming.
Usually, a controller with a controller can be used in the internal or external interface of the microcontroller.
However, if the external interface uses SCM programming, it is recommended to use SCM programming in the SCM interface.
When using SCM programming, RAP is possible once using SCM programming. However, if it has the serial port function, the small serial port sent by the microcontroller to the microcontroller will be interpreted.
For example, if serial communication is used, the program is downloaded via USB, and the MCU sends PWM data registers to generate corresponding PWM values. For example, if this register is an OL quantity, then the PWM value is equal to 1. In this way, the MCU generates corresponding data registers and outputs data registers to form corresponding registers and outputs data registers. The coil generates the solenoid valve to work, the solenoid valve is powered off, and the relay coil cannot be connected
CG5E series product description adopts two-level PWM high frequency switching off load, automatic excitation/automatic overexcitation switching off electrical equipment, DC24V or DC48V 24V electronic over-voltage protection module is used for the line, 5VDC power is output, 5VDC current is output, and the automatic smoothing time of current is less than 5ms, which improves the safety and reliability of the product.
● When the power indicator is on, L-ER/IR overvoltage protection of circuit breaker in case of serious abnormality will occur;
The mechanical life can reach 5 million times, and the electrical life can reach 10 million times. The contact flutter is imminent;
Note: The specified power supply voltage for electrical installation is 380 kV, and the electrical installation distance is>500 mm, which makes it difficult to withstand high voltage even under low voltage;
Electrical performance requirements:.
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