Indoor machine control circuit principle

Y series totally enclosed protect Asynchronous motor
Specifications
1. 20 years manufacturing experience 
2. 12 months guarantee 
3. low noise and temperature rise 
4. high starting torque 

5. AC Voltage: 220V/380V, 380V/660V,400V/690V,220V/400V

 47 c862an special chip indoor machine control circuit adopts frequency conversion air conditioning - Gc5l. The chip single phase motor price inside besides writing special air conditioner program, also contains a microprocessor, program memory, data memory, CPU, input and output interface and timing counter Induction motor circuit and other circuit computation and comparison of wholesalemotor.blogspot.com input signal, on the lamination basis of the result of the operation and compare of separate-bodied air-conditioners, fans, timing, cooling, heating and wetted condition control.

Working principle of the circuit

 Stator Motors Rotor 
Specifications
1. 20 years manufacturing experience
2. competitive price,high quality
3. Brand Name: FUJIAN DONGFENG MACHINERY ELECTRICAL LIABILITY CO., LTD

Indoor machine after joining 220 v ac voltage, wire by T301 added to the socket cN5, zero line from the first (3) feet, FU300, T301 cN4 socket to socket cN5, get 220 v ac power transformer primary, secondary 13 v ac voltage, D204, D205, D206, D207, C214 rectifier filter into the 12 v dc voltage. The voltage all the generator set spare parts way to ICl02, miniature relay SW301 ~ SW305 and buzzer power supply, a path V202, C106 voltage filter + 5 v voltage ICl (47 c862an - GC51) power supply. ICl03 (3) feet will reset signal into ICl 20 reset end, ICl began to work. When the infrared receiver to receive after the refrigeration, by ICl 46 feet to the CPU, 31 feet a pulse output level, electric vehicle motor the buzzer rang once, to alert the user. At this point, the reader set temperature and 38 feet within the operations of the indoor temperature www.dongfeng-motor.com of the indoor temperature sensor test to compare.


AC induction cooling fan motor 
Specifications
1. Customised 
2. good quality 
3. 20 years manufacturing experience 

4. Altitude: ≤1000m

 if the temperature is higher than the room temperature, the cPu will not perform refrigeration instructions; If the set temperature is lower than the room temperature, the cPu to execute commands refrigeration. If wind speed setting of high speed gear, Icl 12 feet, output level for the first 7 ICl02 feet, inverter output low level ICl02 first attending foot, SW303 electricity and, on the high-grade indoor machine work. At this moment, Icl01 first (2) feet ac motor output high level, after the first 5 feet inverting ICl02 from 12 feet output low level, make SW301 absorption, on the offer outdoor 220 v ac power. ICl to seg signal refrigeration operation at the same time, ICl01 52 feet output high level, light green light is LED3 operation. After the user starts the wind on the remote control function, Icl is the first 4 feet high output level for the first 3 feet, inverter Icl02 Icl02 14 feet output low level, SW305 to suck, synchronous motor running, realize the three- dimensional supply function.

Motor common fault analysis and maintenance - electrical fault

Electrical failure of the stator windings without phase operation,the reverse of the stator winding unbalanced three phase current,winding short circuit and grounding,heating winding and rotor broken bar,open circuit,etc.Lack of phase operation is one of the common faults.As long as there is a phase in the asynchronous motor three-phase power supply circuit can cause motor open phase running.Lack of phase operation may be due to line fuse melt fuse,switch contact or wire connector causes such as poor contact.When the power is short of a three-phase motor phase,such as in stop state,due to the synthesis of zero torque and blocked,the inability to start).The locked-rotor currents of the motor current is much larger than normal work.Apply generator generator set power,therefore,in this case the time is too long or more frequent start turning on the power supply will lead to motor burn down.

Running motor is short of a phase,such as load torque is small,still can maintain operation,only speed decreases slightly,and abnormal noise; When the loads,the operation time is too long,will make the motor winding burn.Three-phase winding fore and electricalmotor1.blogspot.com aft misconnect when,after turning on the power supply will be three phase current serious imbalance,reduced jumps,vibration,temperature rise of the rotating speed,the phenomenon such as voice radically.If not protection device,it is easy to burn out motor winding,so must see first,tail motor wire end,before electricity operation.Three phase current unbalance fault,often caused by motor external power supply voltage imbalance,the motor parts internal reason mainly is the winding interturn short circuit or in motor rewind coil number of turns or wiring errors when repaired.Winding grounding and short circuit current is too large.Ground fault available megohmmeter.Can reduce in the stator winding voltage short-circuit fault case,judged by measuring the current,can also measure the dc resistance to judgment.

watt

The power unit of the international system of units.Watt is defined as 1 joule per second (1 j/s),namely every second transformation,use or dissipation (in the) of joule for measurement of the rate of energy. In the electrical electric fan motor system of units,the volt by ampere (V (A).More commonly used in everyday life-kw as a unit,1 mw = 1000 watt.Unit conversion: watt by a British scientist to make a significant contribution to the development of the steam engine was named after James watt.The name of the entity in the first 1889 adopted by the 2nd meeting of the British association for the advancement of ac induction motor 110kw science.In 1960,the international conference on measurement 11th meeting in watts of power in the international system of units (units.People commonly used power unit multiplied by the unit of time to represent the energy.For example,1 kw? R is a power of 1 kw of energy consumed energy wholesalemotor.blogspot.com consumption equipment in 1 hour,is equal to 3.6 million joules.The commonly used formula W = UIT; W = P * T Network watt is small electric motors English words on the water (water).Such as the brain watt,it means that thinking."W" and "bad" in the Shanghai dialect pronunciation similar.

The selection of ac contactor and operation maintenance

(1) to choose:(1) rated current of the primary loop contacts should mini electric motor be greater than or equal to the rated current,accused of equipment control motor contactor should also be considered the starting current of the motor.In order to prevent frequent operation of contactor main contact ablation,frequent movement of contactor rated current can reduce use.(2) the electromagnetic contactor coil rated voltage is 36 v,110 v,220 v,380 acmotortrading.blogspot.com v,the electromagnetic coil allows within the scope of 80%~105% of rated voltage.(2) operation maintenance: (1) check in the operation of the project:1) by the load current is within the contactor ratings;2) contact points and the signal is consistent with the circuit state;3) running sound is normal,have because poor contact and heat discharge;4) with or without electromagnetic coil overheating electromagnet short-circuit rings with and without exception.5) arcing cover any brake rotor loose and damage;6) auxiliary contact with and without damage;7) transmission part with and without damage;8) have running environment without adverse factors of running around,such as too much vibration is too large,poor ventilation,dust,etc.

(2) maintenance: In electrical equipment maintenance work,to maintain the contactor shall work.1) permanent magnet motorexternal maintenance:a.external dust cleaning;B.check all fasteners are loose,especially the conductor connection parts,prevent loose contact and fever;2) contact system maintenance:a.check of dynamic and static contact position is,whether the three-phase closed at the same time,the contact spring should be adjusted if you have any questions;B.check contact wear,wear depth shall not be more than 1 mm,contact burning,welding off,must be change in time;When slight loss,generally does not affect the use.Clean the contact is not allowed to use sand paper,should use the plastic file;C.and measuring insulation resistance,resistance of not less than 10 m Ω;D.check whether the auxiliary contact action is flexible,contact schedule should comply with the specified value,check whether there is any loose fall off on contact,found the problem,should be timely repair or replacement.3) maintain core parts:a.cleaning the dust,especially the moving parts,and between the core and interface;B.check the fastening situation of iron core,iron core run loose cause noise increase;C.core end ring have fall off or break to repair in time.4) electromagnetic coil maintenance:a.measuring coil insulation resistance;B.the coil insulation discoloration,aging,coil surface temperature should not exceed 65 °C;C.check the coil wire connection,if there are any open welding,burning loss should be timely repair.5) arcing cover parts maintenance:a.check whether the arcing cover is damaged;B.arcing cover any loose and location changes;C.remove arcing cover gap within the metal particles and sundry.

Motor points for attention

(1) before disassembly,should surface dust with compressed magnet generator air blowing off the motor,and scraped clean surface dirt.2 choose motor working place,the disintegration of the clean up the scene environment.(3) familiar with acmotor2.blogspot.com the motor structure characteristics and maintenance technical requirements.(4) ready to collapse the required tools and equipment (including special tools).5] in 220v electric motor order to further understand the defects of the motor running,conditional when can do an inspection test before disassembly.For this,turn motor with load test,the detailed check parts,such as temperature,sound,vibration motor,and test the voltage,current,speed,etc.,and then disconnect the load,do a no-load check test,no-load loss and no-load current is measured and recorded.

[6] to cut off the power supply,electrical wiring to remove,recorded.Once the appropriate voltage test motor insulation resistance by megger are.Maintenance in order to keep pace with electric motors price The Times when measured insulation resistance compared to determine the motor insulation change trend and insulating state,should be measured under different temperature insulation resistance value of the conversion to the same temperature,the average conversion to 75 ℃ .Being tested to absorb than K.When the absorption ratio greater than 1.33,which indicates that the motor insulation or degree of be affected with damp be affected with damp be affected with damp be affected with damp or not serious.In order to compare with previous data,also want to add any temperature measured absorption than the conversion to the same temperature.

The cause of the three-phase asynchronous motor can't start

1),2) didn't plug in,blown fuse 3),4) circuit,stator winding of the stator or rotor winding grounding

5),and stator winding short circuit 6),7) of the stator winding wiring error,overload acmotortrading.blogspot.com or mechanical transmission was crushed loose article 8),the rotor copper 9),no oil in the bearing,axis due to heat expansion,obstruction in the bearing rotating 10) wrong wiring,control equipment or damage to the 11),over-current relay size 12),old starting switch oil cup of gasoline generator spare parts oil,13),wound rotor type motor starting operation error 14),wound rotor type motor rotor resistance with 15),bearing damage Three-phase asynchronous motor can't start many factors,a detailed analysis should be done according to Motor vehicleac tual condition and symptoms,carefully check,can't get to start for many times,especially when the starter motor when abnormal noise or overheating,should immediately cut off the power supply,after find out the reason and rule out any 220v ac electric motors starting,in case of failure to expand.

With a brush brushless

Brushless dc motor is composed of stator main body of the motor and drive, is a

typical mechatronics product. The stator winding of the motor to make more balanced three-phase y

connection, With three phase asynchronous motor is electrical motor 24v very similar. On the rotor of the motor with the magnetization of the permanent magnet has, in order to detect the polarity of the motor rotor, inside the motor is equipped with position sensing Device.

Drive consists of power electronic devices and integrated circuit, its function is: accept the motor

start, stop, brake signal, to control the start and stop of the motor Check and brake; Accept the

position sensor signals and positive &negative, used to control the inverter bridge on and off of

each power tube produce continuous torque; Accept the speed instruction and feedback Signal, which is used to control and adjust the speed; To provide protection and display, and so on. Because of brushless dc motor based on self-control type operation, so don't like frequency control of motor

speed synchronous motor overload start under plus startup winding on the www.dongfeng-

motor.comrotor, also do not When the load mutation generate oscillation and step out.

Medium and small capacity of the permanent magnet brushless dc motor (BLDCM), now more than using high magnetic energy product of rare earth ndfeb material (Nd - Fe - B) Material. As a result, the volume of rare earth permanent magnet brushless motor than three-phase asynchronous motor with capacity reduces a frame number. Nearly thirty years in view of the asynchronous motor frequency control of motor speed Research, in the final analysis is looking for a way to control the asynchronous motor torque, rare earth permanent magnet brushless dc motor is bound to its wide speed range, small volume, high efficiency and steady state Speed and small error characteristics appeared

in the field of speed advantage. Because of brushless dc motor has the characteristics of a dc motor, is also the electrical motor 12v 1000w device of frequency variation, so also known

as straight Flow frequency conversion, the international general term for BLDC) motors running

efficiency of the brushless dc motor, torque at low speed, precision of speed is more good than any

of the control technology of inverter, so value Attention to the industry. The product has

production more than 55 kw, can design to 400 kw, can meet the requirements of industry energy saving

and high performance drive. 

1, fully replace the dc motor speed control, comprehensive alternative, comprehensive alternative to asynchronous motor frequency converter + frequency conversion motor + reducer speed; 2, can run for high power at low speed, can save the reducer direct drive big load; 3, have all the advantages of traditional dc motor, and cancelled the carbon brush and slip ring structure; 4, torque characteristic is excellent, medium and low speed torque performance is good, big start torque, small starting current; 5, stepless speed regulation, wide speed range, strong overload capacity; 6, small volume, light weight, large output; 7, soft and soft stop, good braking performance, saves the original mechanical braking or electromagnetic braking device; 8, high efficiency, no excitation loss and carbon brush motor itself loss, eliminate the multiple reduction consumption, comprehensive energy-saving rate can reach 20% ~ 60%, power saving a year only to recover Cost; 9, high reliability, good stability and strong adaptability, simple maintenance and maintenance; 10, turbulence shock resistance, low noise, little vibration, smooth operation, long service life; 11, no radio interference, does not produce sparks, especially suitable for explosive place, explosion-proof type; 12, according to the needs of optional trapezoidal wave motor and is XuanBo magnetic field magnetic field. 

21 points for attention (1) before disassembly, should surface dust with compressed air blowing off the motor, and scraped perkins diesel generator setclean surface dirt. 2 choose motor working place, the disintegration of the clean up the scene environment. (3) familiar with the motor structure characteristics and maintenance technical requirements. (4) ready to collapse the required tools and equipment (including special tools). 5] in order to further understand the defects of the motor running, conditional when can do an inspection test before disassembly. Therefore, the motor with load test, detailed inspection machine Parts, such as temperature, sound, vibration, and test the voltage, current, speed, etc., and then disconnect the load, do a no-load check test, measure and no-load current No-load loss, recorded. [6] to cut off the power supply, electrical wiring to remove, recorded. Once the appropriate voltage test motor insulation resistance by megger are. Maintenance in order to keep up with The Times when measured insulation resistance compared to judge the trend of change motor insulation and insulation State, different temperature should be measured insulation resistance value conversion to the same temperature, the average conversion to 75 ℃. Being tested to absorb than K. When the absorption ratio greater than 1.33, which indicates that the motor insulation or degree of be affected with damp be affected with damp be affected with damp be affected with damp or not serious. In order to compare with previous data, should will likewise Any temperature measured absorption than the conversion to the same temperature.