Company News
Industry News
Knowledge
Contacts: Maggie Yu
Tel: +86-0755-28035808
Fax: +86-0755-28035808
Phone/Wechat: 0086-18038069461
E-mail: yyh88@snowfan.com.cn
Time：2022-04-08Views：0
At present, there are two types of monitoring methods for the DC fan itself: alarm sensor and speed sensor. Using the alarm sensor, an alarm signal can be given when the fan speed is lower than a certain threshold value, and the speed signal output can realize the real-time monitoring of the fan speed. monitor.
Although the variable frequency motor has high reliability, it is still a mechanical device. When used for a long time, its speed may drop or even stop, so it is good to monitor the running status of the fan in real time to find problems in time.
The alarm signal output from the fan circuit has two states: "high level" and "low level". The meanings represented by the two levels are generally in accordance with the positive logic system. The high level means "fault" and the "low level" means "normal".
The speed measurement signal of the DC fan is generally output from the three-lead plug. The yellow and black of the three leads of the DC fan are +12V power supply and grounding respectively, and the other color line is the speed signal output line. It should be noted that the third lead of some three-lead fans is not the speed measurement signal output line, but the speed control signal line, through which the speed control signal is input to the fan motor.
The speed signal output from the DC fan circuit is usually in the form of pulses. Each wave head indicates that the fan has rotated one circle. The signal of the DC fan can be directly provided to the host through the data bus for display. The speed signal output by some fans is not the real speed of the fan, but a multiple of the speed. For example, 2, 4 or 6 pulses are generated per revolution, which must be processed to form the true speed signal reflecting the fan. To tell if the fan speed is the real speed or a multiple, use the tachometer to measure the actual speed and compare it with the displayed data.
New product development, how to quickly choose a suitable cooling fan
2022-02-18How does the DC blower work?
2022-01-14The main application areas of DC cooling fans
2022-05-11Application of Photodiode
2021-12-08What is the reason why the cooling fan in the air purifier does not rotate?
2021-12-17Application field of DC fan
2021-11-05Can cooling fan manufacturers customize high-volume DC 9V fans?
2021-09-23How about the waterproof function of the cooling fan?
2022-04-12About the air volume and pressure of the cooling fan in front of you
2021-08-06How DC Fans Work
2022-05-12How to deal with the noise of the micro cooling fan
2021-12-25Does the cooling fan work at low temperatures have an impact?
2021-10-21How to increase the air volume/wind/pressure of the cooling fan?
2022-02-18What are the advantages and characteristics of the DC fan produced?
2022-03-04Features of DC blower
2021-10-26Briefly describe the characteristics of the DC blower
2022-04-07Analysis of why the waterproof fan has a backwind phenomenon?
2022-02-27Can the speed of AC fan be adjusted?
2022-01-27Does the cooling fan work at low temperature have any effect?
2021-08-13hou much do you know about the working principle of fan cooling
2021-12-24What are the voltage specifications of the DC cooling fan
2021-11-02What is the difference between a 3-wire and 4-wire CPU cooling fan for a computer?
2021-09-01Where are the cooling fan manufacturers mainly concentrated
2021-09-15Advantages and structural defects of hydraulic fans
2021-12-27The correct way to open the DC fan accessories
2021-12-24Can cooling fan manufacturers customize high-volume DC 9V fans?
2021-12-21What is the reason why the cooling fan in the air purifier does not rotate?
2021-12-21What is the cause of the tripping of the cooling fan of medical equipment?
2022-05-18How to fix the slow start of the electric fan
2022-04-27What types of cooling fans are there?
2022-03-24What is the root cause of the cooling fan failure?
2021-11-23Advantages and structural defects of hydraulic fans
2022-02-19Which is better, AC fan or DC fan?
2022-01-05Can the cooling fan pass the salt spray test?
2021-08-02Why are most of the current cameras with infrared function
2021-09-10Small, tiny, ultra-thin cooling fan the size of a fingertip
2022-04-12What are the tips for cleaning the dust of the cooling fan
2021-10-28Can the cooling fan be silent?
2021-12-01Analysis of the reasons for the cooling fan rotation stall
2022-03-02What are the fans used for heat dissipation in electric vehicle charging piles?
2021-08-17What should I do if the computer fan is loud
2022-03-25Monitoring and protection knowledge of DC fans
2022-05-13What is the reason why the cooling fan in the air purifier does not rotate?
2021-09-22Can cooling fan manufacturers customize high-volume DC 9V fans?
2021-09-24What are the requirements for cooling fans for Bitcoin mining machines?
2021-08-12What is the reason why the cooling fan in the air purifier does not rotate?
2021-09-23What is an electric fan made of?
2022-07-18How do manufacturers do dust-proof cooling fans?
2021-08-11Interpretation of the heat transfer method of low-noise DC fans
2022-03-03Understand the installation essentials of DC fans
2021-12-22Does the unobstructed air outlet affect the cooling fan?
2021-09-02Do you know how the fan works?
2022-03-25DC cooling fan
2022-05-17Safe operation and long service life is a major feature of DC blower products
2022-04-11What are the advantages of DC direct floating hot fans?
2022-01-10Heat waves will change the way of life in the future
2021-11-25About the cause and treatment of DC fan noise
2021-11-19Why is the cooling fan squirting oil?
2021-10-18How are the cooling fan manufacturers under the new crown epidemic in 2021?
2021-08-03The main components of the electric fan
2022-07-19How to choose the cooling fan manufacturer of the mining machine? 2 tricks to get it done
2021-12-28How to remove the cooling fan on a desktop computer?
2022-03-23Why does the cooling fan manufacturer require a minimum order quantity, isn't it a standard product?
2022-02-16Do you know how the fan works?
2022-05-11It may be the driving force behind the noise of the cooling fan!
2021-08-04Why are fans mostly square, can they be made into rectangles?
2022-01-07Design steps of cooling fan
2022-03-01Why is there a quantity requirement for the cooling fan?
2021-10-26Which type of cooling fan is prone to noise?
2021-11-10Electric fan: how high temperature and physiology interact
2021-11-24What are the processes for the internal structure of the waterproof fan?
2022-02-24DC fan permanent magnet motor has excellent controllability advantages
2022-03-11How much is the power of a household fan
2022-04-01What are the processes for the internal structure of the waterproof fan?
2021-11-18How long can the manufacturer of 4010 cooling fan guarantee?
2021-12-27Must-see for fan
2021-11-25Axial fans and centrifugal fans
2022-04-08Smart toilet cooling fan cleaning tips
2022-04-18Will the positive and negative poles of the DC cooling fan burn if connected reversely?
2021-09-13Estimated service life of cooling fan hydraulic bearings and double ball bearings
2021-12-24Mergers and acquisitions integration and capital operation among large DC fan manufacturers are beco
2022-04-14DC fan suppliers discuss with you the main factors of fan cooling
2022-03-10What common questions should be paid attention to during the application of cooling fans?
2022-01-17How to solve the noise problem of cooling fan
2022-03-16Explain the components of the cooling fan
2022-05-17How to replace a laptop cooling fan
2022-03-28Will the 12V cooling fan be damaged if the voltage is lower than the rated voltage?
2021-11-16What is the root cause of the cooling fan failure?
2021-11-19What effect does jitter have on performance when the cooling fan is running?
2021-12-20What does the life span of the cooling fan have to do with?
2021-08-05What are the technical treatments for the internal structure of the waterproof fan?
2021-11-08Why are small fans difficult for manufacturers of cooling fans to design temperature control and spe
2021-08-27How to use only two cooling fans with three lines?
2021-09-18Why is the cooling fan developing so fast in China?
2021-08-30What is the air volume unit conversion for DC cooling fans?
2021-12-03Take you to see what is a DC fan
2022-01-17Is the PWM function of the DC cooling fan design quieter?
2021-08-25The structure of the electric fan
2022-07-19Why do ultra-thin 2006 cooling fans often have noise problems?
2021-10-11The parameters of the cooling fan of the Antminer are revealed, and the price is unbelievably low
2021-12-07Will the 12V cooling fan be damaged if the voltage is lower than the rated voltage?
2021-11-11How does the installation method of the cooling fan affect the service life?
2022-01-26How to choose a manufacturer for the cooling fan of the mining machine case to reduce the cost
2021-08-13What is the difference between a heatsink and a fan on a computer?
2022-03-23What are the purchasing skills of electric fans?
2022-05-09Electric fan: distinguish between dry heat and damp heat
2021-11-24What is the difference between ball bearings and oil-impregnated bearings for cooling fans?
2021-11-08Four details to pay attention to when using a DC blower
2022-05-19What are the processes for the internal structure of the waterproof fan?
2021-11-11Reasons and maintenance methods of electric fans not rotating
2022-04-01How to choose the cooling fan manufacturer of the mining machine? 2 tricks to get it done
2022-02-15What methods can improve the quality of cooling fans?
2022-01-15What is the difference between a hydraulic cooling fan and an oil-contained cooling fan?
2021-09-07DC fan permanent magnet motor has excellent controllability advantages
2022-03-09What is the effect of the waterproof fan?
2021-11-03Troubleshooting method for notebook CPU cooling fan
2021-10-25Essential tips for life: how to use the cooling fan correctly
2022-07-15Why is the 4010DC cooling fan so cheap?
2021-08-24iring shall be installed by professionals
2021-12-23Disassemble the components of the cooling fan
2022-04-22increase the speed of the high-volume cooling fan?
2021-12-09Which frameless cooling fan or framed cooling fan has the largest air volume?
2021-08-06Why is there a quantity requirement for the cooling fan?
2021-12-14What are the specifications of the silent fan Jingyangda?
2021-12-06How to choose the cooling fan manufacturer of the mining machine? 2 tricks to get it done
2022-02-23Why are oil-contained cooling fans prone to noise?
2021-09-28How long is the life of 4010 DC fan with high air volume?
2021-08-23The price of cooling fan manufacturers is different, what is the poor performance?
2022-01-17What factors need to be considered for the reliability of the cooling fan?
2021-12-07Do you know what are the commonly used bearings for cooling fans?
2022-03-09Why does the cooling fan manufacturer have no inventory?
2021-08-10What effect does jitter have on performance when the cooling fan is running?
2022-01-24Share DC fan speed with temperature control function
2022-03-03How to choose a silent fan?
2021-08-16Analysis of the source of DC fan noise
2021-11-10What are the processes for the internal structure of the waterproof fan?
2021-11-18Analysis on whether the air outlet is not unblocked has an effect on the cooling fan?
2021-10-12Can the inventory of the cooling fan manufacturer be purchased?
2021-08-09What is the warranty period for the cooling fan?
2021-08-03Why do cooling fan manufacturers have to order several samples?
2021-09-09choose a cooling fan to be more silent?
2021-12-13What are the requirements for non-standard samples of axial flow cooling fan manufacturers?
2021-08-27Why do cooling fan manufacturers want to get an air volume tester
2021-08-20What are the requirements for the cooling fan of the charging pile?
2021-09-17the advantages of imported cooling fans?
2021-12-10Where are the cooling fan manufacturers mainly concentrated
2021-09-2910MM thick cooling fan, what is a strange phenomenon in the industry
2022-01-19What is the gap between domestic cooling fan manufacturers and foreign manufacturers?
2021-09-16Cooling fan manufacturers tell you the source and solution of noise
2022-03-11What is the effect of the waterproof fan?
2021-11-01Axial fans and centrifugal fans
2022-05-16Tell you what to pay attention to when choosing a cooling fan for communication equipment
2022-03-04Teach you to distinguish the types of cooling fans
2022-04-15What is the difference between a hydraulic cooling fan and an oil-contained cooling fan?
2021-09-06What is the method of controlling and adjusting the speed of the cooling fan?
2021-10-15Does the cooling fan work at low temperatures have an impact?
2021-10-19What is the specific meaning of the air volume parameters of the cooling fan?
2021-10-11Micro Fan - What kind of equipment are cooling fans mainly used in?
2022-03-15How can the Raspberry Pi 3rd generation DC fan 3007 be quieter?
2021-08-26Ubiquitous computer cooling fan
2022-04-14Can the speed of the micro cooling fan be adjusted?
2022-01-13The main structure and working principle of electric fan
2022-04-21electric fan
2022-04-21The air volume of the cooling fan is related to the air pressure of the cooling fan
2022-01-24What are the factors related to the life of the cooling fan?
2021-10-14Power saving tips for electric fans
2022-05-06How do manufacturers do dust-proof cooling fans?
2022-02-14Learn about monitoring and protection of DC fans
2022-04-08What is the difference between a DC cooling fan and an AC cooling fan?
2021-09-07What information does the manufacturer need to make a cooling fan sample?
2022-01-25Do you know how the fan works?
2022-04-26Cooling Fan - Structure
2022-03-29What are the factors related to the life of the cooling fan?
2021-10-18Can the DC cooling fan vibrate with high intensity?
2021-09-28The main application areas of DC cooling fans
2022-04-25Cooling fan manufacturer Chengda shares with you the cleaning skills of fans
2022-03-07The main points of using the air purifier cooling fan
2022-04-18Reasons and repair methods for household floor fans not rotating
2022-03-21The cooling fan is used to force the radiator through the wind speed
2022-03-16What is the relationship between the power of the DC axial fan and the air volume?
2021-12-02The development trend of cooling fan
2022-04-11How do manufacturers do dust-proof cooling fans?
2022-02-22What are the processes for the internal structure of the waterproof fan?
2021-11-23How to use and maintain electric fans
2022-05-06Will the positive and negative poles of the DC cooling fan burn if connected reversely?
2022-04-20Why are oil-contained cooling fans prone to noise?
2021-12-16Advantages and Performance of DC Cooling Fans
2022-04-15The speed of the cooling fan
2021-12-22The cooling fan is used to force the air supply to the electronic radiator through the wind speed
2022-03-18How to choose a cooling fan to be more silent?
2021-10-15Teach you how to use a DC fan
2022-05-12Why is the stock 4010 fan so cheap?
2021-08-30What is the gap between domestic cooling fan manufacturers and foreign manufacturers?
2021-09-29How long is the life of the DC fan with high air volume?
2022-02-28What are the 4 wires of the computer CPU cooling fan?
2021-09-01What are the advantages of imported cooling fans?
2021-09-09A comprehensive introduction to DC cooling fans
2022-05-10What are the correct steps to install a DC fan?
2021-11-05What are the factors related to the life of the cooling fan?
2021-10-13Why is the 3007 silent fan difficult to achieve, and is there any good way?
2022-02-18Silicon oil fan clutch structure composition
2021-11-26the DC cooling fan burn if connected
2021-12-09Is it sufficient to increase the speed of the high-volume cooling fan?
2022-04-20What are the characteristics of the charging pile cabinet fan?
2021-08-18Cooling fan manufacturer Chengda shares with you the cleaning skills of fans
2022-03-10What is the reason why the cooling fan in the air purifier does not rotate?
2021-09-24How is the cooling fan designed
2021-12-25How to choose the cooling fan manufacturer of the mining machine? 2 tricks to get it done
2021-08-11How dustproof and reliable the cooling fan is
2022-01-22Can the cooling fan be dustproof?
2021-10-19Can the DC fan speed be adjusted?
2021-08-25What is the difference between a DC cooling fan and an AC cooling fan?
2021-10-08The working principle of silicone oil fan
2021-11-26Disassemble the components of the cooling fan
2022-05-10What is the difference between a hydraulic cooling fan and an oil-contained cooling fan?
2021-10-08How do manufacturers do dust-proof cooling fans?
2021-12-28What does high frequency microwave PCB circuit board exposure do?
2021-09-14Is wireless charging slower than wired charging?
2022-02-14What should be paid attention to for the cooling fan of the new energy charging pile?
2021-08-17Analysis of the source of DC fan noise
2021-11-16Why do cooling fan manufacturers have to order several samples?
2022-04-19What specifications are good for the ventilation fan of the air purifier?
2021-08-24Will the power cord of the cooling fan burn if it is connected upside down?
2021-08-09What is the difference between a DC fan and an AC fan?
2022-03-01Why is it difficult for manufacturers of small fans to design temperature control and speed regulati
2021-08-27How is DC fan better than AC fan?
2022-01-06Talk about the reason why the cooling fan does not turn
2021-11-03How to solve the noise problem of cooling fan
2022-03-17Why does the cooling fan manufacturer have no inventory?
2022-01-18Factors for the rapid rise of a large number of domestic excellent DC fan brands
2022-03-14Different types of cooling fans
2022-05-16Can 4010DC fans be made waterproof?
2021-08-23Repair of electric fan not rotating
2022-04-02What are the advantages of imported cooling fans?
2022-04-19What is the difference between a DC cooling fan and an AC cooling fan?
2021-09-06What is the gap between domestic cooling fan manufacturers and foreign manufacturers?
2021-09-15What is the difference between ball bearings and oil-impregnated bearings for cooling fans?
2021-11-15Analysis of the failure and cause analysis of the cooling fan
2021-10-13The heat dissipation characteristics of axial fans
2021-08-18Can the DC cooling fan vibrate with high intensity?
2021-12-16Features of DC blower
2021-12-14What is the structure of the fan
2022-07-18What is the main reason for the quality of the declassified cooling fan?
2021-08-04Can waterproof fans work at low temperatures?
2021-11-01About the waterproof design of the cooling fan of the charging pile cabinet?
2021-08-16What is the quality of the fans used in the LED lighting industry?
2021-11-09Cooling fan manufacturers tell you the source and solution of noise
2022-03-08Talk about the reason why the cooling fan does not turn
2021-10-21Characteristics of DC Blowers
2022-05-13How electric fans work
2022-03-22The core difference between 4010 cooling fan and 4020 cooling fan
2021-08-05What information does the manufacturer need to make a cooling fan sample?
2021-12-20Classification and application of fans in our lives
2022-04-11The three-phase star connection of the DC cooling fan has a variable frequency motor control circuit
2022-03-17Did you know that the air is continuously recirculated in the unit of the DC fan coil unit?
2022-03-18Can the tolerance of the DC cooling fan be reduced?
2021-09-26Introduction and Application of Photodiode
2021-09-10Analysis of the influence of the installation method of the cooling fan on the life?
2021-12-01How much high temperature can the cooling fan resist?
2021-11-23Where are the current weaknesses of domestic cooling fan manufacturers?
2021-08-20What effect does jitter have on performance when the cooling fan is running?
2021-09-14How to choose a cooling fan to be more silent?
2021-09-02the speed of the cooling fan?
2021-12-13Common faults of cooling fans and their solutions
2022-02-28What fields are DC cooling fans mainly used in
2022-04-26How to choose the current and voltage sensor power supply?
2022-04-13Reasons and solutions for the electric fan not turning
2022-04-06What are the protection requirements for the cooling fan of the charging pile?
2021-08-19How to solve the noise of the cooling fan of the mining machine chassis?
2021-08-12What are the characteristics of lightweight DC fans for drones?
2021-12-06How to choose a more reasonable DC axial fan
2021-08-19Mainly the fan with oil-containing structure.
2022-03-02Why does the ultra-thin cooling fan 3007 often have noise problems?
2021-09-26Cooling fan function introduction
2022-03-28Noise formation and treatment of cooling fan?
2022-05-20The structure of the electric fan
2022-03-22Can cooling fan manufacturers customize high-volume DC 9V fans?
2021-12-17Guidelines For The Use Of Axial Fan Blades
2021-04-28Can the speed of the DC fan be adjusted?
2021-11-02How DC Fans Work
2022-04-06Factors for the rapid rise of a large number of domestic excellent DC fan brands
2022-03-09Do you know what are the commonly used bearings for cooling fans?
2022-03-14Is it sufficient to increase the speed of the high-volume cooling fan?
2021-09-13What information does the manufacturer need to make a cooling fan sample?
2021-09-14Which cooling fan is better?
2022-03-24Discussion on whether the computer power fan is muted
2021-10-25cooling fan manufacturers have to order several samples?
2021-12-10Is it possible to install the computer cooling fan backwards?
2021-11-09A comprehensive introduction to DC cooling fans
2022-04-25The price of cooling fan manufacturers is different, what is the poor performance?
2021-08-10Preventing Excessive Vibration of Industrial Equipment Cooling Fans and Vibration Reduction Scheme
2022-05-18What is the working principle of the DC fan coil unit?
2022-03-15Analysis on whether the cooling fan can be waterproof after adding lubricating oil?
2021-10-13How to use electric fan for baby
2022-05-09Can cooling fan manufacturers customize high-volume DC 9V fans?
2021-09-22DC fan suppliers discuss with you the main factors of fan cooling
2022-03-07the current cameras with infrared function
2021-12-09Teach you how to use a DC fan
2022-04-07Will the current sensor be magnetized?
2022-04-13Analysis on whether the air outlet is not unblocked has an effect on the cooling fan?
2021-10-14Why is the radiator fan that is exhausted to dissipate heat more easily than the blower
2021-09-16What are the processes for the internal structure of the waterproof fan?
2022-01-04Why is the fan not turning?
2022-04-02How to realize the silent cooling fan?
2021-08-02Can waterproof fans operate at low temperatures?
2021-10-20Are more computer fans better?
2022-03-29What is the reason for the slow start of the electric fan
2022-04-27Fan manufacturers
2022-04-22What determines the price of a DC fan
2021-10-28Can the speed of the micro cooling fan be adjusted?
2022-01-08About the cause and treatment of DC fan noise
2021-11-23Analysis of DC fan and its working principle
2021-10-20What is the reason for the noise of 4010 DC fan?
2022-01-20
Link: Rubber 3D print
Tel: +86-0755-28035808
Fax: +86-0755-28035808
Phone/Wechat: 0086-18038069461
E-mail: yyh88@snowfan.com.cn
Address: No.3 Factory Building ,DiYin Industrial Zone ,Kukeng Community ,Guanlan Street ,Longhua District ,Shenzhen
About Us
Products
Application
Support
News
Contact
中
