The 25th Vietnam International Trade Fair

The 25th Vietnam International Trade Fair
Booth No.: D3-58
Add：VIETNAM EXHIBITION AND FAIR CENTER 148 GIANG VO ROAD, BA DINH DIST.,HANOI
Date: April 15 -18, 2015
Category: ELECTRIC MOTORS & MOTOR PARTS
Contact Person: Ms Lynn Huang
Email: fjdongfeng@dongfeng-motor.com

117th Canton Fair

117th Canton Fair
Booth No.: 3.1 N02
Add.: No. 380, Yuejiang Zhong Road, Guangzhou, 510335, China
Date: April 15 -19, 2015
Category: ELECTRIC MOTORS & MOTOR PARTS
Contact Person: Ms Candy Yan
Mobile: 0086-18305975285
Email: sales@dongfeng-motor.com

2015 Hannover Messe

2015 Hannover Messe
Add.: Messegelände, 30521 Hannover, Germany
Booth NO. : Hall14, H50-2
Date: April 13-17, 2015
Category: ELECTRIC MOTORS & MOTOR PARTS
Contact Person: Ms Wendy Chen (Sales Manager)
Mobile: 0086-13616088618
Email: sales@dongfeng-motor.com

PID control - the PID alternator generator method

 electric motor lamination motor spare parts 
Specifications
1. Lamination of electric motor
2. IP54 class F
3. 100% copper
4. silicon steel stamping
5.stunning performance
 PID is one of the most commonly used in the production of industrial control, PID control instrument is also one of the most commonly used in industrial control instrument, PID is suitable for the need for high accuracy measurement control system, according to the controlled automatic calculus of the optimal PID control single phase motor price parameters. PID parameters self-tuning controller can choose outside ANP gost motor a given or valve position control function. Can replace the servo amplifier direct drive actuator (e.g., valves, etc.). Outside a given PID or valve position controller can automatically follow the external generator set given value (or valve position feedback value) to control the output generator (analog control output or relay forward and inversion of control output). It can generator price realize automatic/manual switch without disturbances. Manual switch to automatic, will use the method integrating, so as to realize the smooth manual/automatic switching. Outside a given PID or valve position controller can display measured signal and valve position induction motor prices feedback signal at the same time. 

3 Phase induction Electrical Motor MS Series for winding machine
Specifications
ambient temperature:-15 -40 
above sea level : not exceed 1000m 

rated voltage:+-5% 
PID column display control device integrating digital instrument and analog instrument, digital quantity on measurements and control target for display (double LED digital display), and at the same time to relative measurements and control target analogue display (double column display), the display Electric motor mode for the analog display, LED digital display + double beam makes measurements show more clear and intuitive. The PID parameters self-tuning controller can be resized instrument input signal types. No jump line using the latest technology, need to set the instrument internal parameters, the instrument can be changed from an input signal to another input signal. PID parameters self-tuning controller can choose all the way with analog control output (or switch quantity control output, relay and thyristor are turning, inversion of control) and output analog quantity to send ac generator all the way, can be applied to all kinds of measurement control occasions. PID parameters self-tuning controller supports multiple machine communications, has a variety of standard series two-way communication function, can choose a variety of communication methods, www.facebook.com/guohong.trading such as RS - 232, RS - 485 and RS - 42, communication baud rate of 300 ~ 9600 BPS instrument internal parameters set freely.

The selection of magnetic beads

1. The unit of magnetic beads is the ohm, rather than a hunter, pay special attention on this point. Because the fan motor unit of magnetic beads are according to it stator motor electric at a particular frequency impedance to nominal, the unit of impedance is the ohm. Magnetic beads on the DATASHEET will generally provide the generator set characteristics of frequency generator and impedance graph, generally it is a standard with 100 MHZ, such as 1000 r @ 100 MHZ, which means at the time of 100 MHZ frequency magnetic bead the impedance of the equivalent of 600 ohms. 2. induction motor prices The average filter is made up of lossless reactive element, its role in the line is to single phase ac motor stop band frequency reflected back generator to the source, so this kind of filter also called reflection filter. When reflection filter and signal source impedance mismatch, there will be a part of the energy is reflected back Water pump to the source, causing interference level enhancement. To solve the problems, can be used in filter into online ferrite auto spare parts beads or three-phase asynchronous motor gost magnetic beads, use zi rings or magnetic beads on high frequency acmotor2.blogspot.com signal of eddy current loss, the high frequency component is converted into heat loss. So the copper and magnetic beads absorption effect to the high frequency components, so sometimes also called absorption filter.

ZT PID setting method of specifying setting steps of the empirical method

three phase induction electric motor Y series B35 1.5KW 2.2KW 37KW 75KW

Specifications
-One year warranty 
-Within 25 days delivery 

-Life: 5-7 years 
Integral coefficient S0 = 0 1) let the controller parameters, the actual differential coefficient k = 0, run into the closed loop control system, from small to large change ratio water pump price S1, let the disturbance signal as a step change, observe the control process, until a satisfactory control process. generator set S1 (2) ratio for the current value multiplied by 0.83, from small to large S0 increase generator price integral coefficient, also let the disturbance signal as a step change, to obtain satisfactory control process. (3) the integral coefficient induction motor prices S0 remains www.facebook.com/guohong.trading the same, change the ratio coefficient of S1, observe the control process for improvement, such as improved continued to adjust, ac synchronous generator until satisfied. Otherwise, the original proportion lamination coefficient of S1 electric motor low rpm some increase, S0 readjustment of integral coefficient, strive to improve the control process. So repeated trial and error, until we find a satisfactory proportion coefficient and integral coefficient of S1 S0. generator rotor and stator (4) the introduction of appropriate actual differential coefficient k and the actual differential time TD, when S1 can be appropriately increase the proportion coefficient and integral coefficient S0. The same, and the previous step of differential time setting also need to AC motor adjust repeatedly, until satisfied control process.

PID controller debugging method, adjust proportion coefficient

full load 75% load 50%load three phase induction electric motor Y series B35
Specifications
-One year warranty 
-Within 25 days delivery 

-Life: 5-7 years 
Proportion coefficient P the adjusting range is generally is: 0.1-100. If a gain value 0.1, deviation of PID regulator output change to one over ten. If a gain synchronous generator value 100, deviation of www.facebook.com/dongfeng.motor PID regulator output changes for one hundred times. The effects of the gain is the value, the greater the proportion lamination is single phase 3 hp motor larger. When the initial setting, choose smaller, then slowly motor vehicle spare part up, until the system fluctuations enough hours, then the integral three phase induction motor price or differential ac induction motor coefficient adjustment. Excessive P values will lead to system instability, sustained oscillation; The P value is too pump parts small and will make the system slow. Appropriate value should make the ac generator system have enough but not too sensitive reaction, the sensitivity of the delay of time depends AC motor on the integration time to adjust.

PID controller - proportional integral motor electric differential (PID) control

The ideal control of proportional integral differential motor vehicle spare part control law. It sets the water pump single phase 3 hp motor price length of the three: both proportional action quickly, synchronous generator and the integral action to eliminate residual capacity, and differential effects of advanced control functions. When the deviation order through lamination now, differential greatly action immediately, inhibit the deviation of the jump; Proportion also eliminate the deviation of the role at the same time, reduce deviation lamination range, due to Water pump the proportional action is persistent and control law plays the leading role, so Water pump can make the system more stable; The integral action three-phase asynchronous motor gost to overcome the residual slowly. As long as the role of the single acmotor2.blogspot.com phase 3 hp motor three control parameters properly selected, can give full play to the advantages of three kinds of control law, to get ideal control effect.

Emc test alternator generator methods motor electric and instruments

3 Phase induction Electrical Motor MS Series for winding machine

Specifications
ambient temperature:-15 -40 
above sea level : not exceed 1000m 

rated voltage:+-5% 
Emc test according to its purpose fan motor can be divided into diagnostic tests and standard test. Diagnostic test purpose is investigating the cause fan motor electric motor parts stator winding of the generator electromagnetic compatibility problems, determine the specific parts of the noise and interference, thus to prepare for the suppression measures. Standard test is according to the method of electric motor parts generator emc Electric motor standard testing equipment, assess its reach the standard request. Product standard test must be conducted before entering the market. Emc standards including electromagnetic disturbance (EMI) emission www.dongfeng- motor.com testing and equipment of immunity (EMS) tests. EMI testing is a measuring equipment to launch the harassment, EMS test is for equipment and all kinds of harassment, the anti- interference ability of the test equipment.

Open drain output was compared induction motor prices with the small three phase motor push-pull output

induction motor rotor electronic parts 
Specifications
1.20 years manufacturing experience 
2.competitive price,high quality 

3.Delivery Detail:within 10 days after receiving deposit 
Let's say the structure of the open collector output. The structure of the open collector output ac induction motor is shown stator in figure 1, the right of the triode collector what all don't electric motor low rpm pick up, so called open collector (on the left side of the triode is reverse phase, the input to "0", the output is "0"). In figure 1, when the www.dongfeng-motor.com input is "0" at left, in front of the triode by (equivalent to disconnect between collector and emitter E C), so the 5 v power supply by 1 k resistor to the right of the triode, the right of the triode conduction (i.e., the equivalent of a switch is closed); When the input is "1" at left, in front Electric motor of the triode conduction, and the transistor cut-off (switch). Figure 1 we will ac induction motor simplify to look like permanent magnet motors for sale figure 2. In figure 2 switch is controlled by the software, "1" disconnect, "0" when three phase motor closed. Obviously, you can see that when the switch is closed, output it directly, so the output level of 0. And when the switch is off, the output end dangling, namely the high impedance state. Level is unknown at this moment, if behind a resistive load (even if the light load) to the ground, then the output level by the load to the low level, so the circuit is not the output level.

PID controller - proportional integral motor electric differential (PID) control

The ideal control of proportional integral differential motor vehicle spare part control law. It sets the water pump single phase 3 hp motor price length of the three: both proportional action quickly, synchronous generator and the integral action to eliminate residual capacity, and differential effects of advanced control functions. When the deviation order through lamination now, differential greatly action immediately, inhibit the deviation of the jump; Proportion also eliminate the deviation of the role at the same time, reduce deviation lamination range, due to Water pump the proportional action is persistent and control law plays the leading role, so Water pump can make the system more stable; The integral action three-phase asynchronous motor gost to overcome the residual slowly. As long as the role of the single acmotor2.blogspot.com phase 3 hp motor three control parameters properly selected, can give full play to the advantages of three kinds of control law, to get ideal control effect.

Theoretical calculation of motor electric PID parameters setting method to determine the integral single phase motor price time constant Ti/Td water pump price

 Alibaba China Suppliers!!Export aluminum electric motor casing 
Specifications
1. a replace of Y motor 
2. larger output 
3. save energy 

4. Delivery Detail:within 30-35 days after receiving the deposit
Proportional gain P is determined, set a large integral time constant Ti initial value, then decreases Ti, until the system oscillation, in turn, after gradually increasing Ti, until the system oscillation. Ti records www.facebook.com/dongfeng.motor at this time, lamination set the PID integral time constant Ti for the current value of 150% ~ 180%. Integral time constant three-phase asynchronous motor gost Ti debugging. Integral time constant of Td generally generator rotor and stator don't have to ac generator single phase 2hp electric motor set to zero. If you want to set, the same as the P and Ti method, AC motor take no oscillation of 30%.

Engine based on micro controller MC9S12 high-energy ignition control directly motor electric

 electric induction motor fan blade for ac motor 
Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality
3. Delivery Detail:within 10 days after receiving deposit 
With the development of electronic technology and the improvement of engine performance, the microcomputer control of the electronic ignition system is gradually replaced the traditional engine ignition system, implements the more precise control of ignition time and ignition energy. In the engine ignition system, the use of each engine cylinder with a ignition coil, an independent control of each cylinder ignition coil of the ignition system, called no distributor each generator cylinder independent ignition system, also called the high-energy ignition system directly. Using high energy ignition directly can effectively increase the ignition coil primary circuit of the energy storage and reduce the transmission loss ignition energy, thus improve the ignition energy, single phase 3 hp motor meet the lean-burn vehicle engines, pressurization and the use of alternative fuels such as natural gas, alcohol) requirements of synchronous generator the development of ac synchronous generator new technologies. 


Totally Enclosed Protect Feature and Three-phase Phase low rpm ac electric motor
Specifications
1.IEC standard 
2.OEM 
3.Voltage:50HZ &60HZ;380V&415V 
4.Protection class: IP54 

5.Packaging Details:80-112 carton box 132 and above ply wooden box
For multi- cylinder engine, the high energy ignition system as control events more directly, the requirements of the ac induction motor control circuit and control software is complex, so the performance of the micro controller and control software are have high requirements [1]. MC9S12 series was developed by MOTOROLA company a www.facebook.com/dongfeng.motor high- performance pump parts 16-bit microcontroller (MCU), has the rich I/o interface function, strong ability of numerical arithmetic and logical operations, especially also has strong function ac generator of timing control, make it suitable for the application of the complex sequential control technology in [2]. Based on high energy direct ignition of magnetic generator six-cylinder car engine control system development, the MC9S12DP256 micro controller as the core of software and hardware system design of electronic control unit.

The selection of magnetic beads

1. The unit of magnetic beads is the ohm, rather than a hunter, pay special attention on this point. Because the fan motor unit of magnetic beads are according to it stator motor electric at a particular frequency impedance to nominal, the unit of impedance is the ohm. Magnetic beads on the DATASHEET will generally provide the generator set characteristics of frequency generator and impedance graph, generally it is a standard with 100 MHZ, such as 1000 r @ 100 MHZ, which means at the time of 100 MHZ frequency magnetic bead the impedance of the equivalent of 600 ohms. 

2. induction motor prices The average filter is made up of lossless reactive element, its role in the line is to single phase ac motor stop band frequency reflected back generator to the source, so this kind of filter also called reflection filter. When reflection filter and signal source impedance mismatch, there will be a part of the energy is reflected back Water pump to the source, causing interference level enhancement. To solve the problems, can be used in filter into online ferrite auto spare parts beads or three-phase asynchronous motor gost magnetic beads, use zi rings or magnetic beads on high frequency acmotor2.blogspot.com signal of eddy current loss, the high frequency component is converted into heat loss. So the copper and magnetic beads absorption effect to the high frequency components, so sometimes also called absorption filter.

Debugging method, the integral PID controller/regulation of differential coefficient

 Alibaba China Suppliers!!Export aluminum electric motor casing 
Specifications
1. a replace of Y motor 
2. larger output 
3. save energy 
4. Delivery Detail:within 30-35 days after receiving the deposit
Integral time constant is defined as ac induction motor the deviation single phase motor price of motor electric output growth time. Integration time is set to 1 second, then the output change 100% of the time required for 1 generator set three phase motor second. When the initial setting to set the integration time longer, then slowly down until the system is stable. Differential value is the deviation induction motor prices change rate. Linear change, for example, if the input deviation is a constant adjustment in the regulator output side Electric motor overlay. Don't need to adjust the differential time most of the control system. Because permanent magnet motors for sale only need to attach the time lag of the system parameters. If the gild the lily, combined with the parameters pump parts would make the system control is affected. If through the proportional, integral www.dongfeng-motor.com parameter adjustment or don't get the ideal control requirements, you can adjust the differential time. Initial setting when the coefficient is small, then slowly up, until the system is stable.

Fault judgment

Alibaba China Suppliers!!Export aluminum electric motor casing 
Specifications
1. AC motor aluminum body 
2. customized 
3. 20 years manufacturing experience 
4. competitive price,high quality 
5. Packaging Details:exporting standards match exporting standards 

6. Delivery Detail:within 15 days after receiving deposit 
1, the damage of rectifier module is usually caused by power grid voltage or internal short circuit. Under the condition of eliminate water pump internal short circuit, replace the rectifier bridge. At the scene to deal with generator price failure, verify the user AC motor should focus on power grid, such as power grid voltage, whether of power grid pollution equipment such as electric welding machine, etc. 2, the inverter module or cable damage and the damage is electric water pump usually due to motor drive circuit failure cause. After repair www.facebook.com/guohong.trading of drive circuit, good condition, the measured waveform change module. After replacement driver board in the on-site service, but also must pay attention to check the motor and connecting cable. Without any fault is decided, the operating frequency converter. 


CCC,CE Certification and Waterproof Protect Feature ac motor
Specifications
power range: 0.12-18.5 kW 
Centre height of frame: 63-160 mm 
Rated Voltage: 220V 
Rated Frequency: 50Hz or 60Hz

Packaging Details:80-112 carton box 132 and above plywood box
3, ac synchronous generator electricity without display is commonly due to damage or soft charging circuit switch power supply damage caused no dc dc, such as starting resistance is damaged, it is possible that the single phase induction motor panel damage. 4, after power on display over voltage or under voltage due to the input phase, general circuit aging and circuit board to ac synchronous generator be affected with damp be affected with damp. Find out the voltage detection circuit and check points, to replace the damaged parts. 5, after ac motor power on display over current or grounding short circuit is generally due to the damage of electric current detection circuit. And such as hall element. 6, start the display over current is usually caused by inverter module drive circuit or damaged. 7, no-load output voltage is normal, after the loading of overload or over-current

Street lamp, lawn lamp, garden lamp and lamp installation does not conform to the requirements

 1, the phenomenon of (1), spare parts light pole off paint, rust, loose. (2), grounding installation does not conform to the requirements, or even no grounding line. (3), chimney is too thin, easy to damage, fall off. (4), lawn lamp, lamp bulb wattage is too big, chimney when using temperature is too electric motor high, easy to burn; Sharp edges or chimney cut people easily. 2, (1) analysis of the causes and buy lamps and lanterns has no strict requirements; Rust layer was not well done; Chimney glass or plastic strength is not enough; Fixed socket bolt is not consistent, hard fixed. (2), the design only consider illumination, neglect may harm the pedestrians, especially 3 phase induction motor when a child is touching. (3), construction personnel not earnest implementation specification, docking, lack of understanding of the importance of personal security. 3, preventive measures (l), and choose permanent magnet generator rotor and stator the lamps and lanterns of qualified, especially for spare parts zhuhai coastal acmotor2.blogspot.com wet weather, be sure to choose a better antirust light pole; Whether it is plastic or glass lampshade, all should have a strong typhoon strength.

 (2), lawn lamp, lamp general pursuit is ornament effect, in the design and type selection should be considered when the influence of the temperature produced by high-power incandescent. Relevant data show that the surface temperature of 40 w bulbs of up to 563 ℃, 60 w can reach 137-137 ℃, 100 w to 170-170 ℃, so, in a low and narrow shielding ground lamp, lawn lamp installed more than 60 w bulb, burns are easy to make the shield temperature was too high. In addition, some lawn lamp to selection and chic, edges electric generator are too permanent magnet generator sharp, touch the children also easy to hurt like this accident benefit tamura happened a few times. (3), grounding is a matter of human life, street lamp, lawn lamp, garden lamp and lamp must have a good grounding; Light pole grounding must be welding, tapping diesel generator set lining tin, street lamp power supply connected to the light pole grounding ac motors for the PE line must be used when the spring gasket coping and then screw the nut.

DBJ08-20-98 household electric equipment spare parts should meet the following standard

Totally Enclosed Protect Feature and Three-phase Phase low rpm ac electric motor
Specifications
1.IEC standard 
2.OEM 
3.Voltage:50HZ &60HZ;380V&415V 
4.Protection class: IP54 

5.Packaging Details:80-112 carton box 132 and above ply wooden box
1, each unit into Water pump the households must have built-in resident distribution box. Resident distribution box set power master switch, the switch can cut off phase ac induction motor line and neutral wire at the same time, and has disconnected. Each unit shall set electricity meter, electricity meter box should electric motors be stratified concentrated wall dark installed in public area. Resident distribution power always switch poles switch should be adopted in diesel generator set the oven, master switch capacity selection cannot too big, also cannot too small; To avoid and separate phenomenon at the same time tripping. Electricity meter box is usually stratified concentration is installed on the public channel, this is to facilitate squirrel cage induction motor the meter reading and management, wall is installed in order not to occupy the public channel. 2, a small set of (using the area shall be not less than 38 m2) electricity www.facebook.com/guohong.trading load design power for 4 kw; Medium (using area shall not be less than 49 m2) electricity load design power of 4. generator 6 kw; Great set (using the area of not less than 59 ac motors m2) electricity power load design for 6-8 kw.

Application of electrical control system design

Protection IP55 aluminum housing industrial fan cover 

Specifications
1. Customised 
2. good quality 
3. Surface treatment: Galvanize 

4. Delivery Detail:20-35 days after receiving payment 
The start-stop control circuit of the motor. 1, electrical schematic diagram: the principle of design is given priority to with electric motors start-stop control circuit principle, give attention to both the working state of the circuit indicates diesel engine the local lighting circuit and equipment working point. Figure in the annotation parameters such as the line number, wire cross- sectional area. Components listed in P92, table 4.1, threading pipe and wire parameters shown in table 4.2. 2, electrical installation locations: electrical installation drawing to indicate components list www.facebook.com/guohong.trading all electrical components of the relative location. Usually, the electrical components layout on the main panel and the operation panel. Electrical control system design - the conversation of auto spare parts the heart - the heart of the conversation. Electrical installation locations should be considered the actual installation method and structure size of the electrical components, finally determine the main switchboard and operation panel, and control cabinet structure and overall dimensions. 


CCC,CE Certification and Waterproof Protect Feature ac motor

Specifications
power range: 0.12-18.5 kW 
Centre height of frame: 63-160 mm 
Rated Voltage: 220V 
Rated Frequency: 50Hz or 60Hz

Packaging Details:80-112 carton box 132 and above plywood box
Electrical control system design - the conversation of the heart - the heart of the dialogue 3, electrical wiring diagram: according to the electrical ac synchronous generator installation drawing design, electrical wiring diagram is primarily switchboard wiring diagram and the operating panel wiring diagram. The figure line side digital said line number (1 ~ 7), terminal figures show that the device number (10 ~ 25). 4, electrical interconnection network: electrical interconnection diagram diesel generator set electrical control cabinet panel, and the connection relations between and external devices. In bundle introducing floodlight, operation panel, motor, power line and control the disc, and indicating the threading pipe specification, the parameters of the cable, such as data, see table 4.2. The design should pay attention to the design of water pump price the grounding device (security). Electrical control system design - the conversation of the heart - the conversation of the heart: 5, installation and debugging after the installation is correct, through to three-phase power supply, no-load test, through the action buttons, check up the diesel engine accuracy of the electric device and indicates the correctness of the no-load test and verified, connected to the load as load test, repeated debugging until the normal work of the equipment.

Practical knowledge of electrical engineering

Three-phase 3 phase induction motor five wire with color yellow, green, red, light blue, respectively the U, V, W, N protective earthing line double color (PE) transformer in operation, each transformer phase current should not exceed electric motor rated current; The maximum unbalance current shall not exceed 25% of the rated rotor current. Transformer operation should be performed periodically maintenance. The same transformer power supply system, unsuitable mixed protective earthing and protection by zero. The voltage transformer secondary coil normally rated voltage 100 v. Secondary side of voltage permanent magnet generator transformer at work may not be rotor and stator short circuit. Due to short circuit will produce a lot acmotor2.blogspot.com of short circuit current, may burn out diesel generator set transformer, voltage transformer for this time, secondary side are installed fuse protection. Secondary side of voltage transformer must be grounded at one end. This is to prevent the secondary synchronous generator coil insulation breakdown, a high pressure into the secondary small diesel engine side, endanger the safety of person and equipment. Current transformer secondary side close to the short circuit conditions at work. Rated current of the secondary coil is commonly 5 a current transformer secondary side is not electric generator allowed to open at work, current transformer secondary side generator must be grounded at one end, to prevent the first and second coil insulation breakdown, the side of a high voltage into the secondary side.