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.