F7133黑馬德國F7133黑馬德國

兩個交流接觸器同時工作，它們的主觸點都閉合，必將造成電源短路。因比，為了保證兩個接觸器不同時工作，在控制電路中，串接了對方的常閉輔助觸點RMR和RMF，即把正轉接觸器RMF的一個常閉輔助觸點串接在反轉接觸器RMR的線圈電路中，而把反轉接觸器的一個常閉輔助觸點串接在正轉接觸器的線圈電路中。這兩個常閉觸點稱為聯鎖觸點。這樣一來, 當按下正轉起動按鈕SBF時，正轉接觸器線圈通電，主觸點RMF閉合，電動機正轉。與此同時，聯鎖觸點斷開了反轉接觸器RMR的線圈電路。因此，即使誤按了反轉起動按鈕SBR，反轉接觸器也不能動作。在同一時間里兩個接觸器只允許有一個在工作的控制作用稱為互鎖作用或聯鎖作用。
    手機

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 Qq:

鄭娟萍

廈門仲鑫航自動化設備有限公司  

但是在正轉過程中要求反轉，必須先按停止按鈕SB1，讓聯鎖觸點RMF閉合后，才能按反轉啟動按鈕使電動機反轉，這樣一來，帶來操作上的不方便。為了解決這個問題，除了利用接觸器的動斷觸點進行電氣互鎖外，還可以利用復合按鈕觸點動作的先后順序不同進行機械互鎖。就是這種控制電路的輔助電路(主電路與前相同)。每一個復合按鈕都有一副動合觸點和一副動斷觸點，兩個啟動按鈕的動斷觸點分別與對方的接觸器線圈串聯。當按下正轉啟動按鈕SBF時，它的動斷觸點先斷開反轉接觸器的線圈電路；當按下反轉啟動按鈕SBR時，它的動斷觸點先斷開正轉接觸器的線圈電路。因此,采用這種復合按鈕，在改變電動機轉向時可以不必先按停止鈕，只要按下相應的另一起動按鈕即可。如果兩種互鎖方式同時采用，構成雙重互鎖，相互制約工作更為可靠。 

NMB-MAT Technologies 17PY-Z444-99VS Stepper Motor "NEW" 8501C*
 
Solartron 7150 Operating Manual P/N71500010A 3307D-3
 
HP 140A Oscilloscope Operating & Service Manual 00140-90908 3115E-3
 
IPC Power Resistors 15085 Dynamic Braking Resistor*
 
HP 140A Oscilloscope Operating & Service Manual 00140-90906 3115E-3
 
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HP 5280A Reversible Counter Operating & Service Manual 05280-9005 3115E-3
 
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HP 3762A Data Generator/ 3763A Error Detector Operating Manual 3115E-3
 
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Solartron 7150 Operating Manual P/N71500010A 3307D-3
 
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HP 3421A Data Acquisition & Control Unit Service Manual 03421-90008 3114A-1
 
Schrader Bellows FW2B101321 1.000 250PSI Cylinder , 95D-2 
 
HP 7470A Interfacing and Programming Manual P/N 07470-90001
 
HP 3403A/B True RMS Voltmeter Operating & Service Manual 03406-90005 3114A-1
 
BENDER IRDH265-R321, A-ISOMETER, Serie 260- Rack 14*
 
HP 3406A Sampling Voltmeter Operating & Service Manual 03406-90001 3114A-1
 
Mitsubishi FR-PU03 Parameter Unit- 8202C*
 
HP 333A/334A Distortion Analyzer Preliminary Operating & Service Manual 3114A-1
 
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Met One 085 Temperature Humidity Probe 5VDC - 7601B*
 
Analog Devices AD215BY Wideband Isolation Amplifier 7704B*
 
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Fuji Electric NB2-P36R3-DC/Z018 Basic Unit, 19-30VDC- 8202C*

Honeywell Parker Skinner 7341LAN1HNM0N0C111C2 Valve NEW , 95D-2

Pack of 8 Neutrik NC6MXX-B Plug, XLR, Black, 7 Pole *NEW*, 8304E

Industrial Devices Corp, P33V-EQ Servo Motor- 8202B*

Omega 2170A Operations Manual 3307D-3

Tektronix 3S1 Instruction Manual P/N 070-0632-00 3307D-3

Lambda UGZ1-2258; 2500W Power Supply- Rack 5*

Appleton ACP6044BC Powertite Plug, 7403B

Dytran 3055B3T Accelerometer*

INS DX-200 Illumination Meter with case

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Tektronix 1141A Differential Probe*

HP 7470A Operators Manual P/N07470-90052 3307D-3

Tektronix 7S12 Instruction Manual P/N 070-1244-00 3307D-3

Omron S82K-00724 DIN Mount Power Supply 24VDC 0.3A S82K00724 7102C-4

DC Motor Co. power driver AS-113605 DC390 HP 4.7 22volt 350RMP, 7804B
 
EIT UVI Map UVIMAP UM254H-S + DPU-411 Type II Thermal Printer rk15
 
Varian G-40A G-422A Technical Information P/N 87-300-422 3307D-3
 
Square D 52045-062-50 Weld Control Module, 106D-2 
 
HP 85062-60006 1.26.5GHz Electronic Calibration Module 7704a
 
Merrimac PS-5-13.5/26453, MFR-12457- 7103A-3
 
Bird Thruline 4113 1000W 2-30MHz Mini-Monitor Transmitter  for Parts 
 
HP 83402C Lightwave Source 1310nm 300kHz-6GHz opt 012 8904e
 
Tektronix Guru IBM Personal Computer P/N 070-5543-00 3307D-3
 
Fluke 8012A Digital Multimeter, 7402B
 
Agilent 11590B 0.1-12.4GHz Bias Network 
 
Omron E2E-CR8C1 Proximity Switch 12-24VDC 2M E2ECR8C1 NEW 7703C
 
Zeiss 46-04-01 9904 10/0.22 Ph1 Microscope Objective 8501C
 
Omron E2E-X2ME1 Proximity Switch 12-24VDC 2M E2EX2ME1 NEW 7703C
 
HP 11850C Power Splitter DC-3.0GHz 50 ohm 
 
emecanique  Square D 52045-062-50 Weld Control Module, 106D-2 
 
TENMA 72-805 Signal Analyzer Channel NTSC CATV&OFF-Air, 81B-1
 
Tektronix 535/545 Instruction Manual 070-198 3209C-3
 
HP 8470A Crystal Detector 8904e
 
Tektronix 531 Instruction Manual 3209C-3
 
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GE 50-162111FAFA2ADT Leak Rate Special Scale Meter Type D0-91, 7203A
 
Tektronix 531/541 Instruction Manual 070-203 3209C-3
 
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AB Allen-Bradley 1204-TFB2 Ser A Motor Terminator rk2
 
Hurst 12VC Model SAS p/n 4003-002 8W Motor 9101a yellow bin 
 
Tektronix 524 Instruction Manual 070-236 3209C-3
 
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Tektronix 515/515A Instruction Manual 070-0247-01 3209C-3
 
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Tektronix 464/466 Option 10 Instruction Manual 061-2172-00 3209C-3
 
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Cutler Hammer CH D6 WMS1D06 240V pack of  2 
 
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Reliance B14H1060M-TT; 2.0HP, 2000RPM AC Synchronous Motor*
 
Aro Mounting Kit #119626 , 96F-1
 
OEM Solutions PM-35-200-4 8 Amps at 240 Vac Module, 95D-2
 
ATI; AT-MX10-05 CentreCOM MX10 Microtransceiver*
 
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Reliance B14H1060M-UU; 2.0HP, 2000RPM AC Synchronous Motor*
 
Astec LPS253 100-250V 4.5A DC 120-300V 3.4A Power Supply 8901B
 
Comair Rotron 032942 Model ST12B3QDNX NEW, 96F-1
 
Cole Parmer Digi-Sense Thermistor Thermometer -50 to 125 C, 106D-2
 
Tektronix 7L5 Instruction Manual 061-1000-00 3209C-1
 
Tektronix 434 Instruction Manual 070-1131-00 3209C-1
 
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Reliance B14H1060N-TW; 2.0HP, 2000RPM AC Synchronous Motor*
 
Tektronix 464 Instruction Manual 070-1653-01 3209C-1
 
BK Precision B+K 1670A DC Regulated Power Supply 7703B
 
AIR-VAC N15EZ15; 15mm Nozzle-7703C*
 
Tektronix 545A Instruction Manual 3209C-1
 
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Parker 4301 Slide 7904D-1
 
Hakko A1180B Nozzle for SMD Rework Station- 7703C*
 
Hakko A1187B Nozzle for SMD Rework Station- 7703C*
 
Hakko A1186B Nozzle for SMD Rework Station- 7703C*
 
Leitz Wetzlar Diavert A0.25 L62 + Periplan 10X + Phaco L20/L32/10 Microscope r11
 
Tektronix 545B Instruction Manual 070-428 3209C-4
 
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Tektronix 1503 Instruction Manual 070-1865-00 3209C-4
 
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HP 83480A Analyzer Programmers/ Quick Ref/ User Guide/ Quick Start Manual CD
 
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EES KSV 1,25-B 1.25-B 24VDC 1,25A NB-1D
 
AMP 90115 Type F 24-22 Crimper Crimping Tool Bin 1 #2 
 
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LEADER 8100, 100MHz Oscilloscope*
 
Tektronix P6046 Active Differential Probe System 7203D*
 
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SS - 0060 Probe
 
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