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.

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.

Motor with the choice of circuit breaker

Cast iron ac induction electric fan motor parts 
Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality 

3. Type: iron body of AC electric motor
Low voltage circuit breaker is www.facebook.com/guohong.trading generally divided into plastic shell type (also known three electric motors phase induction motor as the device type) and frame type (also called universal type) two kinds big. The motor under 380 v245kw and more choose molded case circuit breaker. Circuit breaker can be divided into the generator distribution line protection according to the use and protection, lighting protection circuit of the motor and electric leakage protection use and so on. 2.1 motor protection circuit breaker selection principles: (1) the set values for the long time delay current is equal to the rated current of the motor. (2) the instantaneous current setting: for the protection of cage motor circuit breaker, the adjusting current diesel engine instantaneous equal to 8 to 15 times the rated current of the motor, depending on the squirrel cage induction motor protected cage motor model, capacity and starting conditions. 


CCC CE ROHS UL VDE Certification and 115/120 V AC Voltage 220V&120V induction motor
Specifications
1. Specifications1.3-phase asynchronous motors 
2. IEC standard 
3. OEM 
4. Voltage:50HZ &60HZ;380V&415V 

5.Protection class: IP54 
For wound rotor motor protection circuit breaker, the adjusting current instantaneous is equal to (3 ~ 6) times the rated current of the motor, diesel generator set depending on the protected wound rotor motor model, capacity and starting diesel generator set conditions. (3) 6 times of long time delay current setting value can return time is greater than or equal to the starting time of the motor. According to the weight of the starting load, can choose to return time 1 s, 3 s, 5 s, one of an 8 s, 15 s. 2.2 circuit water pump price breaker tripping device setting current simplified formula: "instant-on, motor kw 20 times" "thermal trip, according to the rating of the above formula is to protect a 380 v control of three-phase cage type motor circuit breakers, instantaneous motion setting its electromagnetic tripping current, according to the number of" kw "20 times". For thermal trip, according to the rated current of the motor selection.

Permanent magnet ac servo motor

 DONGFENG Brand Two Speed Motor
Specifications
1. DONGFENG Brand Two Speed Motor 
2. 3000RPM-750RPM 
3. Electrical motor 
4. factory price best quality 
5. 100% copper 
Since the 1980 www.facebook.com/guohong.trading s, with the integrated circuit, power 3 phase induction motor electronic technology and the development of ac variable speed drive technology, permanent magnet ac servo drive technology has the prominent development, all countries well-known electrical manufacturers www.dongfeng-motor.com have launched their own ac servo motor and servo drive series products and constantly improve and update. Ac servo system has become the main direction of modern high-performance servo system, the original dc servo faced the crisis of elimination. After three phase induction motor the 90 s, countries around the alternator generator world have commercialization of ac servo system is controlled using digital sine wave motor servo drive. 

ac motor Lamination 220v class B/F 
Specifications
1. Lamination of electric motor 
2. IP54 class F 
3. 100% copper 
4. silicon steel stamping 

5. stunning performance 
Ac servo drive unit in the field of drive development with each passing day. Compared to dc servo motor, permanent magnet ac servo motor main advantages ac synchronous generator are: (1) no brush and commutator, so that the work is reliable, the maintenance and low maintenance ac motor water pump price requirements. 2 stator winding heat dissipation is more convenient. (3) inertia small, easy to improve the rapidity of the system. (4) adapted to high speed large torque working squirrel cage induction motor condition. 5] with power under a relatively small volume and weight.

4 ~ 20 ma signal

Totally Enclosed Protect Feature and Three-phase Phase low rpm ac electric motor
Specifications
Specifications1.3-phase asynchronous motors 
2.IEC standard 
3.OEM 
4.Voltage:50HZ &60HZ;380V&415V 

5.Protection class: IP54 

No matter how many, than change of transformer is transmitter output generally acmotortrading.blogspot.com USES is 4 ~ 20 ma signal (far eastone purposes). Access, 100-5 transformer transducer output 20 ma corresponds to the actual current 100 a, 3 phase ac induction motor 4 ma corresponding to 0 a; Access, 300-5 transformer transducer output 20 ma corresponds to the actual current 300 a, 4 ma corresponding to 0 a. ABB inverter ACS800 parameters With resistance in Single phase motor circuit, the current is used to perform a task, to pass on information. If too small, the information will be a loss; (a little rent, a current is too small, to 3 phase induction motor the receiver, the current is too small, so that the receiver can't analysis and accept it.) But is too big, will blow out circuit (not seen collection circuit, so thin copper wire, or painted, current is too large, many with no?)

Low temperature heating effect

Totally Enclosed Protect Feature and Three-phase Phase low rpm ac electric motor
Specifications
power range: 0.12-18.5 kW 
Centre height of frame: 63-160 mm 
Rated Voltage: 380 V 

Rated Frequency: 50Hz or 60Hz 

Constant speed air conditioning compressor speed constant, below 0 ° C compressor power is ac electric motor low, in fact there is no heating effect; With high frequency, frequency conversion air conditioning low temperature so as to meet the needs of users. There is only one constant speed air conditioning compressor speed, not possible when full of strong; Frequency conversion air conditioning in just 220v electric motor boot or on a long, large temperature difference between indoor and outdoor, and can realize high frequency strong operation. Each such as current protection of constant speed air conditioning needs to stop the compressor; Frequency conversion air conditioning when Single phase motor happen to protect both with appropriate frequency reduction of running buffer, which can realize non-stop protection, does not affect the use of the user.

Simple troubleshooting

(1) voltage, no order, the machine doesn't motor parts work. Is commonly Z301 varistor short circuit breakdown, insurance FU3OO fusing; Transformer primary winding. (2) the indoor fan did not electric vehicle motor turn. Check for + 12 v ICl02 pet-name ruby foot, attending, 11, 15 of which have a foot as the low level, the attending, 11, 12 of the ICl for a foot to high level. Check the fan capacitor ever exception; Fan motor winding is open (short wholesalemotor.blogspot.com circuit). (3) the outdoor fan does not turn, but the compressor operation. Generally fan cover for ICl or SWl or SW2 damage, fan abnormal capacitance. Fan motor winding is open circuit or short circuit.

Nameplate parameters

Motor nameplate data and rating Model:the series of varieties,the performance of the motor,protective structures,such as rotor type product code.Rated power:it means the runtime on the output mechanical power rating of the motor shaft,unit KW electric vehicle motor or HP,1 HP = 0.736 KW.Voltage:directly to the line on the stator winding voltage (V),the motor has two kinds of Y and delta connection,the connection shall be consistent with connection of regulation of motor nameplates,to ensure that corresponding to the rated voltage.Current:motor under rated voltage and rated frequency,and the output power rating of the stator winding current of three-phase line Motor vehicle Frequency motor,which refer to connect the ac power frequency of 50 hz + 1 Chinese regulations Speed:motor under the rated voltage,rated frequency,rated load,motor speed (r/min) per minute;The 2 pole motor synchronous speed is 2880 / min.The duration of the work quota:refers to the motor running.Insulation class:the level of motor insulation materials,decided to allow temperature rise of the motor.Standard number:said design motor technical documents basis.Excitation voltage:refers to the synchronous motor excitation voltage (V) when the rated work.Field current:refers to www.dongfeng-motor.com the synchronous motor excitation current (A) when the rated work.

The motor brake specifications

The www.dongfeng-motor.com motor brake specifications 1,the brake torque:(1),0.5 N.m

(2),1 n. M.Test using a pointer type torque wrench,0 ~ 2 n. M 2,the rise of temperature of the

brakes:Products run on 115% of the wholesalemotor.blogspot.com rated

voltage,external temperature,maximum 120 degrees,use the outside temperature

detector,record,small electric motors different time periods for 24 to 48 hours.3,brake torque test and high temperature resistance high temperature dielectric strength testing:For 24 to 48 hours after making the products reached the highest temperature resistance torque value detection stator products,and test the insulation resistance,the parameter is: 1800 v / 2 ma,2 seconds.4,repetitive frequency brake products:120 times per minute.5,testing the brakes under normal working voltage of plus or minus 15% voltage is working correctly,and measure the torque and working current.

Motor burn out phase characteristics

Lack of electricity,a phase star connection will burn off two phase coil.Delta,meet will burn a coil.Lack of two phase electric,star connection will burn a coil.Delta,will burn off the two coils 1.The interphase short circuit.If found in three phase generator short circuit fault phenomena,fusing many wire,the nearby have a lot of molten copper scrap,and the other or the other end of coil group were no sear, Can be concluded that the winding burn was caused by phase fault.2.Lack of phase operation.Burn out motor winding due to lack of phase operation,and the damage characteristics of general is obvious.Open the cover of a motor,if you see the winding end a third or two-thirds of extremely Group of burn black or dark brown.wholesalemotor.blogspot.com And the rest of the two phase or a phase winding is in good condition,can be concluded that the winding burn was caused by lack of phase operation.3.The turn-to-turn short circuit.Because of turn-to-turn short circuit and burn out motor winding,the obvious features of the damage,if the end coil can clearly motor fan see that there are a few turns or burned in a volume group,a very very Electromagnetic wire was burned into bare copper wire,and the short circuit part outside of nature or other two phase coil is intact or burned a little,can be concluded that is turn asked short-circuit winding burn.

Pump ac motor 3hp made in china yc ycl

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AEEF series Three Phase Induction Motors

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YL series single phase motors

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Y series three phase induction motor

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AC Electric Motor 4KW 380V

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