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introduction：There are many possible cases of abnormal motor noise。electrically：Electric machinePhase loss，Rotor broken bar，Rotor sweeping。Mechanical aspect：Bearing oil shortage，End cap wear，Wind blade mill cover。Today, lets briefly analyze the reasons for the abnormal sound of the bicycle motor and the elimination methods！ 1、Fault cause： ①The motor internal bearing clearance is large。 ②Motor rotor bore sweeping。 ③Magnetic steel loosening、Fall off。 ④Internal axial movement of motor。 ⑤Brush motor commutator surface oxidation、ablation、Oil contamination、uneven、The commutator is loose。 ⑥The brush holder is loose、The brush holder is not right。
2018-01-13 Reading quantity 352
introduction：Industrial connector picture Industrial connectors are specifically designed to build a robust Ethernet connection in harsh environments，Tougher than previous connectors、stronger、More resilient。This new interface is widely believed to be“Industrial connector”，Its applications are not limited to manufacturing。The connectors are designed to withstand harsh industrial environments。The following Xiaobian will take you to see the industrial connector picture。
2018-01-13 Reading quantity 280
introduction：Xiaobian did not find the relevant knowledge about this series of products for a long time，Here to give you the popularization of inverter motor knowledge！ Asynchronous motorWhen the slip rate does not change much，Speed is proportional to frequency，It can be seen that changing the frequency of the power supply can change the speed of the asynchronous motor。In frequency control，Always want the main flux to remain constant。If the main magnetic flux is greater than the normal operating magnetic flux，The magnetic circuit is supersaturated and the excitation current increases，Power factor reduction；If the main magnetic flux is less than the normal operating magnetic flux，The motor torque decreases。 Working principle： Standardized motor test stands by test power supply、Electrical parameter test system、Test measurement and control system、Motor test and control report software, etc。 The test bench is driven by two test power sources respectively，One runs as an electric motor，One runs as a generator；Stati
2018-01-12 Reading quantity 377
introduction：pilzSafety relay specification PILZA safety relay is a combination of several relays and circuits，In order to complement each others abnormal defects，Complete function of relay with correct and low error operation，The lower the error and failure value，The following Xiaobian will take you to understandpilzSafety relay specification。
2018-01-12 Reading quantity 309
introduction：Working principle of safety relay A safety relay is a combination of several relays and circuits，In order to complement each others abnormal defects，Complete function of relay with correct and low error operation，The lower the error and failure value，The higher the safety factor，Therefore, it is necessary to design a variety of safety relays to protect different grades of machinery，The main objective is to protect machine operators who are exposed to different levels of risk。
2018-01-12 Reading quantity 314
introduction：Siemens inverter is a power control device that uses the on-off action of power semiconductor devices to convert the power frequency power supply to another frequency,It can realize the soft start of AC induction motor、Variable frequency speed regulation、Improve running accuracy、Variable power factor、overcurrent/overvoltage/Overload protection and other functions。
2018-01-12 Reading quantity 315
introduction：Should pay attention to，type（4）And form（2）No essential change，Notwithstanding form（3）Is the formula，But it only plays the role of parameter transformation，There is no change（1）（、2）Properties of the definition。Hence the speed expression（4）Its just an artificial definition，Not a formula，Naturally can not become the theoretical basis of AC speed regulation，To do otherwise would be to commit a basic logical error。In addition，By expression（2）Determine the connection between the synchronous speed and the mechanical speed，Its man-made，This is taken as the theoretical basis that the mechanical speed can be changed by changing the synchronous speed，Its obviously not scientific。In fact，Synchronous speed and mechanical speed are two kinds of motion with different properties，The former is mechanical and the latter is electromagnetic，There is no direct connection between the two，You cant make simple synthesis。
2018-01-11 Reading quantity 502
introduction：Working principle and connection of relay A relay is an automatic switching element with isolation function，Widely used in remote control、telemetry、communication、Automatic control、Mechatronics and power electronic equipment，It is one of the important control components。The following Xiaobian will take you to understand the working principle and wiring method of the relay。
2018-01-11 Reading quantity 341
introduction：leserSafety valve action Safety valves belong to automatic valves，Mainly used in boilers、Pressure vessels and pipes，Control pressure does not exceed the specified value，It plays an important role in protecting personal safety and equipment operation。I believe many people do not know its role，The following Feng Ye Xiaobian will take you to understandleserSafety valve action：
2018-01-10 Reading quantity 275
introduction：（1）Motor triangle connection because there is no neutral point，The specific method is the motorThe head and tail of the three-phase winding are separately connected，There is only one voltage level，Line voltage equals phase voltage，The line current is equal to the phase current1，73times。 （2）Motor star connection because of the neutral point（The motor is generally three-phase symmetrical load, so it generally does not lead to a neutral line），The specific method is that the three tails of the three-phase winding of the motor are connected together，Three heads are connected to the power supply，There are two voltage levels，Namely line voltage and phase voltage，And the line voltage is equal to the approximate phase voltage1.73times，Line current equals phase current。 （3）It should be noted that the motor with the original star connection cannot be connected into a triangle，（If you make a triangle，Then the phase voltage rises to about1.73times，Long running will burn the motor）。
2018-01-10 Reading quantity 320
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