6ES7222-1HF22-0XA8開始相繞組加速去磁。為了避免過早地檢測(cè)去磁結(jié)束事件，換向之后有20μs的濾波時(shí)間。為了避測(cè)去磁結(jié)束事件太晚，去磁結(jié)束的檢測(cè)使用相同的比較器，但是取樣頻率是800kHz。

無傳感器模式下，比較器的輸出取樣頻率在過零點(diǎn)事件時(shí)是PWM信號(hào)，在去磁結(jié)束事件檢測(cè)時(shí)是800kHz。

電機(jī)的啟動(dòng)和控制舉例

這里以2個(gè)極對(duì)數(shù)的電機(jī)的啟動(dòng)為例。電機(jī)啟動(dòng)后目標(biāo)速度是1400r/min。啟動(dòng)電機(jī)之前，預(yù)先固定位置。剛啟動(dòng)時(shí)，反電動(dòng)勢(shì)信號(hào)太弱，不能讀取。讀取反電動(dòng)勢(shì)信號(hào)前的過程中，電流提供》（負(fù)載力矩＋摩擦力矩＋電機(jī)的慣性負(fù)載的力矩）。故啟動(dòng)時(shí)，ST72141定時(shí)器A的PWM占空比在啟動(dòng)過程中高于一般運(yùn)行下需要的值。

步長(zhǎng)后，為了檢測(cè)到過零點(diǎn)事件，需要一個(gè)特別的方法啟動(dòng)電機(jī)，稱為同步（強(qiáng)制換向）模式，或者稱為電機(jī)根據(jù)加速表加速的過程。

6ES7222-1HF22-0XA8

CTI Control Technology 901D-2558 8PT Analog Input

GE General Electric TED134060 WL 60 AMP 60Amp 60A A

Cutler Hammer Westinghouse HFD3015L 15A A 15Amp 15 Amp

Westinghouse A200M3CAC Size 3 Starter Style 5277C13G01

FPE Federal Pacific breaker NJL3150T 150 Amp A 150A

Great Lakes GLI Schott Model 95 Turbidity Analyzer 

Cutler Hammer Westinghouse HFD HFD3030L 30 Amp A 30Amp

TI/Siemens 505-6516 16-slot Base I/O Rack 5056516

Westinghouse Breaker EHB3050 50A A 50Amp 50 Amp EHB

Westinghouse Seltronic HNC31200F 1000 Amp A 1000Amp

Westinghouse Breaker MCP534000W 400 Amp 400A A 400Amp

Westinghouse Breaker MCP534000W 400 Amp 400A A 400Amp

Cutler Hammer Westinghouse EHD EHD3070 70 Amp A 70A

Westinghouse Breaker MA3800FS 800Amp 800A Amp 800 A

Westinghouse Breaker MCP534000 400 Amp 400A A 400Amp

Cutler Hammer WH JDB JDB3200 JT3200T JDB3200 200 Amp A

Westinghouse MCP MCP534000C 400 Amp 400A A 400Amp

Westinghouse Breaker HFD HFD3060L 60 Amp 60A A

Westinghouse Breaker 65K HFD HFD3050L 50 Amp 50A

Westinghouse Breaker HFD HFD3020L 20Amp A 20 Amp

Westinghouse Seltronic Breaker MDSA3800F 800 Amp A 800A

Westinghouse Breaker FB3070 70A A 70Amp 70 Amp

Westinghouse Breaker HFD HFD3015L 15A A 15Amp 15 Amp

Westinghouse Breaker HFB HFB3070 70A A 70Amp 70 Amp

Westinghouse Breaker HFB HFB3050 50A A 50Amp 50 Amp

Westinghouse Circuit Breaker HLB3400F HLB 100 Amp Trip

Westinghouse Circuit Breaker GMCP030H1C 30Amp A 30A

Westinghouse Circuit Breaker HFB3040L HFB 40 Amp 40A A

Westinghouse Circuit Breaker HFB3020 HFB 20 Amp

Westinghouse Breaker NB31200F NB 1200 Amp A Trip

Allen-Bradley AB Contactor Cat. 700-F220A1 700 120V 

GE General Electric THED136020 20 AMP 20Amp 20A A

Toshiba Tosvert-130H1 7.5 HP Transistor Inverter Drive

Cutler-Hammer MCIOGYN3 2 speed reversing contactor GY 

Magnetrol 341 Ultrasonic Transmitter 341-2442-100 4X 

Square D Circuit Breaker EDB14020 20Amp 20A 20 Amp A

Cutler-Hammer CE15SN3 contactor size 4 CH C-H 185 amps

IT 560-162 Current Transformer CT 1600: 5 5A 1600 A Amp

Fischer Porter 53MC5412A25BACXDXCXX Controller 53MC5

Foxboro 875CR-A3F-A Electrochemical Analyzer 875CRA3FA

Siemens SBH 4040 SBH4040 SBH4040F 4000 Amp SB50TP02G

Siemens SBH 4040 SBH4040 SBH4040DV 4000 Amp SB50TP02G

6SE6440-2UD37-5FB1  6SE6440-2UD38-8FA1  6SE6440-2UD38-8FB1  

6SE6440-2UD41-1FA1  6SE6440-2UD41-1FB1  6SE6440-2UD41-3GA1  

6SE6440-2UD41-3GB1 6SE6440-2UD41-6GA1 6SE6440-2UD41-6GB1  

6SE6440-2UD42-0GA1  6SE6440-2UD42-0GB1  6SE6440-2UE17-5CA1  

6SE6440-2UE21-5CA1  6SE6440-2UE22-2CA1  6SE6440-2UE24-0CA1  

6SE6440-2UE25-5CA1  6SE6440-2UE27-5CA1 6SE6440-2UE31-1CA1 

6SE6440-2UE31-5DA1  6SE6440-2UE31-8DA1  6SE6440-2UE32-2DA1  

6SE6440-2UE33-0EA1  6SE6440-2UE33-7EA1 6SE6440-2UE34-5FA1  

6SE6440-2UE35-5FA1  6SE6440-2UE37-5FA1  6SE6440-2AB11-2AA1 

6SE6440-2AB12-5AA1  6SE6440-2AB13-7AA1  6SE6440-2AB15-5AA1  

6SE6440-2AB17-5AA1  6SE6440-2AB21-1BA1 6SE6440-2AB21-5BA1 

6SE6440-2AB22-2BA1 6SE6440-2AB23-0CA1 6SE6440-2AC23-0CA1 

6SE6440-2AC24-0CA1  6SE6440-2AC25-5CA1  6SE6440-2AD22-2BA1  

6SE6440-2AD23-0BA1  6SE6440-2AD24-0BA1 6SE6440-2AD25-5CA1 

6SE6440-2AD27-5CA1 6SE6440-2AD31-1CA1 6SE6440-2AD31-5DA1  

6SE6440-2AD31-8DA1  6SE6440-2AD32-2DA1  6SE6440-2AD33-0EA1  

6SE6440-2AD33-7EA1  6SE6440-2AD34-5FA1  6SE6440-2AD35-5FA1

6SE6440-2AD37-5FA1