該結(jié)構(gòu)是在電機的軸上裝有一個磁環(huán)，它一般有6極磁環(huán)及2極磁環(huán)2種。當(dāng)電機轉(zhuǎn)子旋轉(zhuǎn)一圈時，磁環(huán)也旋轉(zhuǎn)一圈，磁環(huán)與PG板中的霍爾元件相感應(yīng)，6極磁環(huán)會在PG板的OUTPUT（白）腳中輸出3個脈沖，2極磁環(huán)會輸出1個脈沖，這樣根據(jù)輸出脈沖的數(shù)量就可以知道電機的轉(zhuǎn)速。在電控中設(shè)定有預(yù)定的轉(zhuǎn)速值，將它與從PG塊中采樣取得的轉(zhuǎn)速值相比較，當(dāng)轉(zhuǎn)速偏低時，則提高電控的輸出電壓（可控硅導(dǎo)通角變大），當(dāng)轉(zhuǎn)速偏高時，則降低電控的輸出電壓（可控硅導(dǎo)通角變小），這樣通過PG信號的反饋調(diào)節(jié)電控輸出電壓就實現(xiàn)了對電機的平滑調(diào)速。由于電控的輸出電壓不會高于其輸入電壓，因此在電機設(shè)計時要保證電機達(dá)到高風(fēng)檔的轉(zhuǎn)速時其電控的電壓不高于工作的額定電壓。如我國額定電壓為220VAC，則設(shè)計時的電控電壓一般設(shè)計為180VAC~200VAC左右。此參數(shù)值設(shè)定太低則造成電機材料浪費，且電控若損壞擊穿后電機直通市網(wǎng)電壓，其電機溫升會較高；若此參數(shù)值設(shè)定過高則會造成市網(wǎng)電壓降低時，有可能達(dá)不到設(shè)定的額定轉(zhuǎn)速，影響空調(diào)的能力

　　抽頭調(diào)速

　　電容運轉(zhuǎn)電動機在調(diào)速范圍不大時，普遍采用定子繞組抽頭調(diào)速。此時定子槽中放置有主繞組、副繞組及調(diào)速繞組，通過改變調(diào)速繞組與主、副繞組的聯(lián)接方式，調(diào)整氣隙磁場大小及橢圓度來實現(xiàn)調(diào)速的目的。

模數(shù)轉(zhuǎn)換器（ADC）代替了模擬系統(tǒng)的誤差放大器，從而將感應(yīng)到的模擬電壓值轉(zhuǎn)換成二進制數(shù)。

　　一般電容運轉(zhuǎn)單相電機，主繞組與副繞組嵌在不同的槽中，繞組與鐵芯間由聚酯纖維無紡布（DMDM或DMD）隔開，其在空間一般相差90度電角度，且副繞組通過串聯(lián)一個工作電容器后與主繞組并接于電源。當(dāng)電機通電后，主繞組與副繞組在氣隙中共同形成一個有方向有幅值強度的旋轉(zhuǎn)磁場。其方向與主、副繞組所處的空間位置等有關(guān)，它決定了電機的轉(zhuǎn)向；其幅值強度則與主副繞組的參數(shù)設(shè)計有關(guān)，它決定了電機輸出力矩的大小。該旋轉(zhuǎn)磁場與轉(zhuǎn)子鼠籠轉(zhuǎn)子相互作用，使電動機按一定的方向旋轉(zhuǎn)。若調(diào)換主副繞組的空間位置，則旋轉(zhuǎn)磁場的旋轉(zhuǎn)方向會相反，該反方向的旋轉(zhuǎn)磁場與轉(zhuǎn)子相互作用，使電動機的轉(zhuǎn)向也會相反。

------------------------------------------------
福州卓凱電子科技有限公司

24小時銷售技術(shù)服務(wù)熱線 ：15506917382  0591-62182535
傳真（Fax）：0591-22989937

商務(wù)QQ ：583745937
聯(lián)系人： 王工（ 銷售工程師 ）

地址：福州市閩侯西江濱大道77號正榮潤園一號樓1205室
------------------------------------------------

Siemens 6SC6-600-4GA00 Central Module 6SC66004GA00 - Parts Only

State TRN-6207A Circuit Board

R780-JS7A R780-JS1B R780-JS0B R780-JS0A

Landis Tool A95056 Drive Board -

BYSTRONIC E715-5-C BOARD POSCON Var 01 XY

Kaller TU 5000-50 Gas Spring TU500050 TU 5000-50 VV 01372609 -

Allen Bradley 1201-HJP Programming Terminal Series B FRN 1.07

SIEMENS 6ES7741-0AB10-0BA2 PROGRAMMING MODULE

Rowan 2090-60L ITE Real Part 209060L (Pack of 3)

Flotronics FTH-150-502 Proportional Valve Control Chipped Connector Housing

Allen Bradley 1788-DNBO/A DeviceNet Daughtercard

GE FANUC BIU CARD 531X175SSBAAM3 531X175SSBAA NEW

Plasma-rm 3307970501 RF Control Board 3307969401 -

GE FANUC 44A719326-G01 44A719326

Andover Controls TCX 845 Infinity Terminal Control Module Series 840

Boston Gear F7135B5H Reducer -

GE FANUC HE693STP113AX HE693STP113 INDEXER STEPPER MOTOR 1 AXIS

ABB / Bailey IMDSI22 infi 90 Digital Input Module

GE FANUC SERIES IC600YB923A IC600YB923

General Electric 6193404G6 Current Limiting Fuse Type EJ-1 7E Amps

Siemens 4700-BDRMC3-11HN Power Meter Unit

GE FANUC AC SERVO AMPLIFIER A06B-6127-H208

GE Fanuc A16B-1310-0660/02A A16B-1310-0660 BOARD

ta TR-C5227 Decitrak 1000 RPM Max -

Radisys EMC-PS50 Power Supply Module 83-0013-00

QUARTECH 9701AP MESSAGE DISPLAY

Issc 340C-SDP ISSC -

Fanuc A16B-2200-0431/03A Remote I/O Board with 96635301 Interface

FANUC A02B-0120-B513 SIX SLOT BACKPLANE

Brooks MT 3810 Armored Metal Tube Flow Meter 3810A14BAPAA1A1

Allen Bradley 1771-IEC 1771IEC Analog Input Module 8 Bit 636020-90 -

GE Fanuc 531X139APMABM6 531X MAN REF

BUSSMAN OPM-1038 (LOT OF 2) OVERCURRENT PROTECTION MODULES

Allen Bradley PLC-5/40V Processor Unit PLC5 40V

Allen Bradley 1746-OB16/D SLC 500 Output Module

General Electric DH1BBS 41

Adtech RBX 274 Two Wire Transmitter Module

Daytronic 3530 Indicator -

General Electric PLE3ESFG02 Power Leader EPM Electronic Power Meter

GE SGLA36AT0400 Spectra RMS Current Limiting Circuit Breaker 400 Amps 600V

Reliance Electric 0-57416-K Module O-57416-K . (Pack of 3) - Refurbished

Kop-Flex 1 1/2W FHUBX 1 1/8 112WFHUBX118 Hub

Square D 30072-002-51 3007200251 Contactor -

Label Aire 0014581 Micro Control Card 7465681 004071-9607 Ver B -

Westinghouse 1C31206G01 Ovation Media Attachment Unit Base Assembly Sub 05

Allen Bradley 1492-GH100 10A Circuit Breaker 1492GH100 (Pack of 24) -

ABB 3BSE020848R1 S800 I/O Termination Unit TU841 PR:D

Cuno Incorporated 1414517 500030 Autoklean Hydraulic Filter

Part D30584-160-01 Circuit Board -

Westinghouse 676C546G19 Current Limiting Fuse 170 Amps Type CLS-1

Bently Nevada 3500 Position I/O Module 135145-01

Mitutoyo 937415 RS-232-C Output Unit Card

Square D FA32070 I-Line Circuit Breaker 70 Amps 240VAC Black Face

Fanuc A16B-1212-021 Servo Controller Memory Board

Allen Bradley 1756-IA16/A ControlLogix AC Input Module Rev. F01

Bussmann KAL 2000 KAL2000 Limiter Fuse Tested (Pack of 3) -

Sick Optic 4027239/D444 4027239D444 Circuit Board 2019866 2017676 2020043 -

Square D FA36020 I-Line Circuit Breaker 20 Amps 600VAC

Fisher KR1462 Alarm Module -

Dukane 93597 US906 107804 Welding System US Input -

Intel 100094904 100949-04 10091904

GE RL4RD040T RELAY WITH RT1G

Atlas Copco 4240 0068 01 Angle Module Card Rev. 8711

Bently Nevada 3500 Series Proximitor I/O Module 126615-01

P & H Harnischfeger 100E4897F1 Brake Control - Refurbished

ASM 30788 Circuit Board 32996 403/960 -

Sick Optic 4028611 Circuit Board G231 2018755 2019155 M507/0503 728863 -

GE FANUC AC SERVO AMPLIFIER A06B-6087-H126

Motorola NLN4031A Circuit Board INSP 35

Asco L206380-7RVU-120 Solenoid Valve L2063807RVU (Pack of 3)

Timken M246910-20024 Tapered Roller Bearing

Texane 7S21.7-.75-2.75 Vee Tex Seal Split

ALLEN-BRADLEY (LOT OF 2) 1492-HJ86 SER. A SURFACE MOUNTED TERMINAL BLOCKS

Helm HT400 Transducer Strain Gain -

Siemens ECGB20 Ground Bar Kit (Pack of 24)

Cleaver Brooks CB Hawk 833-2426 Firing Rate Interface Module

HONEYWELL DTE6-2RN LIMIT SWITCH

Honeywell 51304362-300 UCN Serial Interface Card HW T FW F

Fanuc A20B-2900-0790/02A Memory Module A20B2900079002A -

Sealmaster 2-111 Insert Ball Bearing 7000290

Indramat ITDS 94V-O 50 93 Circuit Board -

Reliance Electric O-57411-2 0-57411-2 0574112 Resolver Input Card Module 1

Westinghouse 2528D30G01 Bus Duct Circuit Breaker Enclosure 150 Amps FDB3100

Indramat 109-0792-3B03-03 TVS4 10907923B0303 -

Grayhill 70G-IDC5 Module 70G-1DC5 (Pack of 24) -

Fanuc A05B-2308-C307 Intrinsically Safe Teach Pendant RJ3

Square D KH36225 I-Line Circuit Breaker 225 Amps 600VAC

Allen Bradley 2711P-K10C4D7 Panelview Plus 2711PK10C4D7 Factory Sealed Series A

ALLEN-BRADLEY 1762-OW16 A A OUTPUT

Vickers 868982 Black Valve Coil (Pack of 3)

Fanuc A20B-1004-0852/04A Board A20B1004085204A -

Schneider TSX-MC70-E324 Memory Module Cartridge TSXMC70E324 -

Endo ATB-2 Air Tool Hose Balancer (Pack of 3) -

Reliance Electric Company 0-51865 Drive -

Square D EGB34040 Circuit Breaker 40 Amps 480VAC

Lantronix UD1100IA2-01 Industrial Device Server Rev. A11

Reliance 0 86466074RC Rectifiers 86466-74RC -

Fanuc A06B-6066-H211 C Series Servo Amplifier Unit

Graco CP830158 Comm/Bell Processor Board CP 830 158 Rev B -

Honeywell 972SPT-A3P Inductive Proximity Switch 972SPTA3P

Neotech N-250159 N250159 N 250159 Resolver -

Myron Zucker KIM43006-3 Capacitor KIM430063

Siemens 6SC6-120-0FE00 Board 6SC61200FE00 - Refurbished

R780-JS7A R780-JS1B R780-JS0B R780-JS0A

KOMATSU KDP5320CA-30K KDP5320CA 30K 7821 51 6700

Allen Bradley 111536 PLC Board Rev 14 -

Square D FAL36035 Industrial Circuit Breaker 35A 600VAC 3 Pole

Fanuc A16B-2200-0124/05C Base 0 Axis Control Board

CM20MD-24H CM20MD24H

Randolph Tool & MFG WG-5084A-L1 WG5084AL1 Cylinder -

ALLEN-BRADLEY 1769-OW8 B 1 2.1 OUTPUT RELAY

GE FANUC IC600BF811A IC600BF811 NEW

Helm 49.52 ILS-H40 49.52 Load Cell ILS-H40 -

ECA 8-302 Relay 8302 (Pack of 3) -

Fuji FUD-1M-12C Ultrasonic Concentration Meter

Square D 8538SBG33V81A12A19CFF4P82T11 Combination Starter Size 0 30 Amps

RELIANCE 57C404A NETWORK COMMUNICATIONS MODULE

FINCOR 106113802HM-C Circuit Board Rev. C 106113802HMC -

Bailey Controls IMDSI02 infi 90 Digital Input Slave Module Card

KEYENCE PG-602 PHOTOELECTRIC SENSOR

Tocco D-212192-1 -