在電動機運行時按停止按鈕SB2,它的常閉觸點斷開,使KM的線圈失電,KM的主觸點斷開,異步電動機的三相電源被切斷,電動機停止運行i同時控制電路中KM的輔助常開觸點斷開。當停止按鈕SB2被放開,其常閉觸點閉合后,KM的線圈仍然失電,電動機繼續(xù)保持停止運行狀態(tài)。圖1.3給出了有關(guān)信號的波形圖,圖中用高電平表示1狀態(tài)(線圈通電、按鈕被按下),用低電平表示0狀態(tài)(線圈斷電、按鈕被放開)。
Daytronic DC Voltage Signal Conditioner 4062 used
Daytronic 4K/SPC-77 Statistical Process Control used
Lenze AC Tech Drive SFC SF405 1/2 HP new
Load Controls Inc Load Control XCR-1830V new
Daytronic DC Strain Gage Controller 4077 used
Superior Slo-Syn 430-T Translator Drive Module
Superior Slo-Syn 430-T Translator Drive Module new
Moore Process Controller 535-210000000 new
NSD Teach Pendant Hand-Held VS-T01-0.3 new
NSD Teach Hand-Held Pendant VS-T01-0.3 new
ABB Universal Controller Commander 250 C250/0000/STD
Vorne Industries 2015 Panel Message Display new
MTS Temposonics Programmable Limit Switch TLSU1000
Maxon Motor Control 4-Q-DC 145391 ADS Servo Amplifier
Emerson Positioning Servo Drive PCM-11 960158-02
KB Electronics Regenerative DC Motor Control KBRG-225D
Dynisco Pressure Controller UPR UPR690