F7133黑馬德國(guó)兩個(gè)交流接觸器同時(shí)工作，它們的主觸點(diǎn)都閉合，必將造成電源短路。因比，為了保證兩個(gè)接觸器不同時(shí)工作，在控制電路中，串接了對(duì)方的常閉輔助觸點(diǎn)RMR和RMF，即把正轉(zhuǎn)接觸器RMF的一個(gè)常閉輔助觸點(diǎn)串接在反轉(zhuǎn)接觸器RMR的線圈電路中，而把反轉(zhuǎn)接觸器的一個(gè)常閉輔助觸點(diǎn)串接在正轉(zhuǎn)接觸器的線圈電路中。這兩個(gè)常閉觸點(diǎn)稱(chēng)為聯(lián)鎖觸點(diǎn)。這樣一來(lái), 當(dāng)按下正轉(zhuǎn)起動(dòng)按鈕SBF時(shí)，正轉(zhuǎn)接觸器線圈通電，主觸點(diǎn)

F7133黑馬德國(guó)F7133黑馬德國(guó)國(guó)

兩個(gè)交流接觸器同時(shí)工作，它們的主觸點(diǎn)都閉合，必將造成電源短路。因比，為了保證兩個(gè)接觸器不同時(shí)工作，在控制電路中，串接了對(duì)方的常閉輔助觸點(diǎn)RMR和RMF，即把正轉(zhuǎn)接觸器RMF的一個(gè)常閉輔助觸點(diǎn)串接在反轉(zhuǎn)接觸器RMR的線圈電路中，而把反轉(zhuǎn)接觸器的一個(gè)常閉輔助觸點(diǎn)串接在正轉(zhuǎn)接觸器的線圈電路中。這兩個(gè)常閉觸點(diǎn)稱(chēng)為聯(lián)鎖觸點(diǎn)。這樣一來(lái), 當(dāng)按下正轉(zhuǎn)起動(dòng)按鈕SBF時(shí)，正轉(zhuǎn)接觸器線圈通電，主觸點(diǎn)RMF閉合，電動(dòng)機(jī)正轉(zhuǎn)。與此同時(shí)，聯(lián)鎖觸點(diǎn)斷開(kāi)了反轉(zhuǎn)接觸器RMR的線圈電路。因此，即使誤按了反轉(zhuǎn)起動(dòng)按鈕SBR，反轉(zhuǎn)接觸器也不能動(dòng)作。在同一時(shí)間里兩個(gè)接觸器只允許有一個(gè)在工作的控制作用稱(chēng)為互鎖作用或聯(lián)鎖作用。

鄭娟萍

廈門(mén)仲鑫航自動(dòng)化設(shè)備有限公司  

但是在正轉(zhuǎn)過(guò)程中要求反轉(zhuǎn)，必須先按停止按鈕SB1，讓聯(lián)鎖觸點(diǎn)RMF閉合后，才能按反轉(zhuǎn)啟動(dòng)按鈕使電動(dòng)機(jī)反轉(zhuǎn)，這樣一來(lái)，帶來(lái)操作上的不方便。為了解決這個(gè)問(wèn)題，除了利用接觸器的動(dòng)斷觸點(diǎn)進(jìn)行電氣互鎖外，還可以利用復(fù)合按鈕觸點(diǎn)動(dòng)作的先后順序不同進(jìn)行機(jī)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(gè)復(fù)合按鈕都有一副動(dòng)合觸點(diǎn)和一副動(dòng)斷觸點(diǎn)，兩個(gè)啟動(dòng)按鈕的動(dòng)斷觸點(diǎn)分別與對(duì)方的接觸器線圈串聯(lián)。當(dāng)按下正轉(zhuǎn)啟動(dòng)按鈕SBF時(shí)，它的動(dòng)斷觸點(diǎn)先斷開(kāi)反轉(zhuǎn)接觸器的線圈電路；當(dāng)按下反轉(zhuǎn)啟動(dòng)按鈕SBR時(shí)，它的動(dòng)斷觸點(diǎn)先斷開(kāi)正轉(zhuǎn)接觸器的線圈電路。因此,采用這種復(fù)合按鈕，在改變電動(dòng)機(jī)轉(zhuǎn)向時(shí)可以不必先按停止鈕，只要按下相應(yīng)的另一起動(dòng)按鈕即可。如果兩種互鎖方式同時(shí)采用，構(gòu)成雙重互鎖，相互制約工作更為可靠。 

Power-One HA5-1.5/OVP-A+ 5V @ 1.5 A OVP Set @ 6.2 +/- 0.4V Power Supply, 8500E
 
Huntington Mechanical Laboratories PV-150-SF #189001600 Precision 12VDC, 81B-2
 
AMP 90015-M C 26-22 PIDG 8450 Crimping Tool Crimper B3#1 
 
Tektronix P6202A FET Scope Probe*
 
AMP 90298-1-C 8437 Type F 20-18 B3#2 Crimper Crimping Tool rack11
 
AMP 90299-1-E 8636 Type F 16-14 Crimping Tool Crimper Rack11 B3#3

General Radio 1346 Audio Frequency Microvolter*
 
MagneTek GPD 315  Model MUB003 400V 3ph 0.75kW, 81B-2
 
Lindberg Model 51848 1100C Oven- Rack 12*
 
Tektronix P6202A FET Scope Probe 7203C*
 
AMP 91230-1 Pistol Grip Crimping Tool*
 
AB Allen-Bradley PACK OF 7 700-HA33Z24 
 
Square D LR2 455 Quick Connect Terminal & KF300D49 Transformer, 7103A-4
 
Square D Module 63230-300-100 Ser A1 100/300V 30W, 81B-2
 
Century Electric Company 8-311463-01, 3900 RPM, 230/460V, 3Ph Motor*
 
PCIM 200 (PCI) HIGH CONTRAST DOT MATRIX LCD MODULE Rack8
 
Olympus Optical BC30CA52CABDN AC Servo Motor 30W 3000RPM 8301C
 
855-10231 IMC McBasic UTP to Fiber Media Converter , IMC Networks Corp. 7703D*
 
Elpac MS6509F 9VDC, 7.2A Power Supply- 8102C*
 
Allen- Bradley 6180-DHCEFGAZEZZ Touch Panel Computer- Rack 12*
 
emecanique SM3PX500K3, 7002C-3
 
AB Allen-Bradley 1771-KG Series B PLC-2  Power Supply Module, 98G-3
 
Pacific Scientific 45VM62-020-4 Servo Motor*
 
Olympus Optical BC30CA52CACDN 30W 3000RPM AC Servo Motor 8301C
 
Skynet SNP-Z207 Power Supply- In: (100-250V~4A); Out: (+12V--21A, 250V) rk4btm 
 
Pacific Scientific 45VM62-020-4 Servo Motor w/Tach*
 
Sperry DM-4400A Digital Multimeter NEW Pack of 2 
 
Furnas 46S121 TWO BOXES OF FIVE NEW socket screw 11 term 27E121 15A 300VAC
 
Boston Gear Fluid Power #EN64241-MGG, 96G-1
 
Power-One SPM5A2B4A1F1S112, International Series Switching Power Supply*
 
Square D NAL36900 Molded Case Thermal Magnetic Circuit Breaker 900A 600V 
 
Tektronix P6106 Probe, No Grabber, 7904D-1
 
Pacific Scientific 33VM62-020-20 Servo Motor w/Tach, 30VDC, 5.4A*
 
HP 3352B Data System Operating Manual 03352-90004 3114A-1
 
RADIALL R 282 271 7102C-2^
 
Pack of 3 Valenite CSTPR-12CA-12 
 
Elpac FVA100015A; 15V, 6.7A  Power Supply- 8102C*
 
HP 3325A Synthesizer/ Function Generator Operating Manual 03325-90012 3114A-1
 
Power-One SPM5A2F1F1A1S126, International Series Switching Power Supply*
 
HP Option 020 Voltmeter for 5328A Counter Installation & Service Manual 3114A-1
 
DMC M22520/7-01 MH860 7102C-1^
 
HP E3614A DC Power Supply 0-8V 0-6A rk2  
 
Schneider TSX Quantum 140HRT10000 140-HRT-100-00,98G-3 
 
Finder 96.74 15A 250V Pack of 2 
 
Presin Co F185-0156-1; 115V, .094A Counter*
 
AMP 90300-1 Type F 18-20 / 22-24 Crimper Crimping Tool B4#1 Rack12c
 
Veeco 872-344, 466-511- Assembly*
 
OMRON E32-T12F "NEW" Photoelectric Switch Fiber Unit*
 
Veeco 872-348, 466-700- Assembly*
 
AMP 90206-1 Type F 30-26 Crimping Tool Crimper B4#2 Rack12c
 
Crydom 6301A 60VDC 3.0A 60VDC  Output Relay, 7201A-2
 
HP 5245L Electronic Counter Operating Manual 05245-9008 3114A-1
 
Finder 92.43 Pack of 3 8701a
 
HP 5245L Electronic Counter Operating Manual 05245-9021 3114A-1
 
VIZ WP 708A Triple DC Power Supply*
 
Jackes-Evans RB3S4 General Purpose Valve, 7904D-1
 
HP 350C Attenuator Set 5W-50V 500Ω DC-IMC 
 
DMC M22520/34-01 7102C-1^
 
Bailey I/P Positioner AV232021  Supply Air - 150   psi  max , 2605C
 
Namco EA700-20000 Snap-Lock Limit Switch NEW ,81B-2
 
Crydom S430 DC Output 55V 4.0A Relay, 7201A-2
 
Veeco 872-341, 466-279 A; Assembly*
 
Thomas & Betts WT-403 WT403 Crimper B4#3 GSC-175 Rack12c
 
Clippard Minimatic SDD-24-1 SDD241 Pneumatic Cylinder Precision Stainless 8301A
 
Watlow CVBCJH00400065D  7201A-4
 
Veeco 872-100, 58954-1 GLA; Assembly*
 
Tektronix P6217 Active Fet Probe 4 GHz, 0.4pF TYP, 100k Ohms, 10X, 7301B-1
 
DMC M22520/1-02 Crimping Tool*
 
Pack of 2 A.1023.7525 A-1023-7525 
 
Texas Instruments TIRIS RI-ANT-02C-30 Stick Antenna*
 
Brookfield DV-I RVTDV-I + Model D Helipath Stand Digital Viscometer 
 
Elcodis FLEX101 Multibus Baseboard, 7301B-1
 
Bluegrass LBT Clamp ASSY 100457363*
 
SMC VQ1100-5 Valve  DC24V 1W 0.1-0.7MPa, 95F-1
 
ISCO Electrophoresis Power Supply Model 494- Rack 13*
 
Plasma-Therm Inc. APCS-3 w/AM-1 Controller*
 
HAYSSEN 610A-0100-00AA Temperature Controller*
 
SMC NCDA1D200-1500-XA22M Pneumatic Cylinder 8401C
 
Mercury Xenon LBT Clamp ASSY 100364763*
 
Honeywell DR4500, DR45AT Chart Recorder*
 
K3 Molybdenum LBT Clamp ASSY 100423544*
 
Tektronix 215107, OXZ012 Case*
 
Hubbell Hubbellock 60A600V.A.C. Male Plug*
 
Sony/Tektronix A6909 Two Channel Isolator w/IEEE 488.2 STD Port 7301E*
 
Kollmorgen U9M4T 00-00907-010 Servodisc DC Motor 8903B
 
S2 Hafnium LBT Clamp ASSY 100372794*
 
Newhaven Display 16203 106550-08-09-04 NHD-0216WZ-RN-YBW-2 rk3 
 
SLD CLT-50 Screwdriver DC Power Supply NEW
 
P1 Silver LBT Clamp ASSY 100424625*
 
TSUNAMI BT705 4-8Ga Premier Car Stereo Battery Terminal (2 Pack)*
 
phd AVB-1-1/8X2-D-E Pneumatic Cylinder 08719343-01 1010 8601F
 
Crouzet GORDOS GRD 84130100 Relay 12-24A TO 280VAC*
 
Kennametal 230196R06 6344-4052CHGC 3768CG3 
 
Allen-Air CSD-1-1/2-X-2-FC 69 Pneumatic Cylinder 8601F
 
BTX BT600 REV. C, Electro Cell Manipulator 600- Rack 12*
 
Kollmorgen PMI U12M4 00-01202-090 Servodisc Motor 8901C
 
Bruel & Kjaer 4426 Noise Level Analyzer w/ 2808 Power Supply, 7703E
 
Festo CRDSNU-20-50-P-A 160882 X008  Pneumatic Cylinder 8601F
 
Bruel & Kjaer 6302 Waveform Retriever no power supply 8104Btm
 
HP 16532A Oscilloscope Module User's Reference 16532-90906 3112D-1
 
HP 16540A/16541A Analyzer Module Front-Panel Operation Reference 16540-90902 
 
Tektronix P6247 1GHz Differential Probe- 7102B-1
 
Tektronix P6048, 6ft, 10X~1pF Probe*
 
Hastings Instruments Vacuum Gauge 760*
 
Boonton 91DA Sensitive RF Voltmeter Parts/Repair, 94B 
 
HP 53131A/132A Universal Counter Operating Guide 53131-90055 3112D1
 
Kollmorgen U12M4 00-01202-003 Servodisc DC Motor 8901C
 
HP 17176A Scanner Module Operating & Service Manual 17176A-90000 3112D1
 
HP 17175A Active Filter Input Module Operating & Service Manual 17175-90000 
 
Fluke 2400A-106 CurrentTransmitter Input Connector, 98G-3
 
Magnecraft W102VX-55 High Voltage Relay 5000V Peak NEW, 95F-1
 
Parker 71215SN2KN00N0H111C2 Skinner Valve, 24V DC, 7103A-2
 
Dayton 4Z134A Permanent Magnet DC Gearmotor 18RPM 90V , 105F
 
HP 17174A DC Offset Input Module Operating & Service Manual 17174-90001 3112D1
 
Kennametal 6316-4122CHGA 
 
HP 17173A Null Detector Module Operating & Service Manual 17173-90000 3112D1
 
Potter & Brumfield EOTIDB72 3-32VDC, 7201A-1
 
Harris Digital Bipolar CMOS Vol 2 1981 3212A-1 Manual 
 
HP 17171A DC Preamplifier Input Module Operating & Service Manual 17171-90000 
 
Extron DA RGB/YUV Series Distribution Amplifier*
 
Pack of 4 6390-1592 
 
REGO Valve BC750S NEW , 95F-1
 
HP 17170A/17178A Input Module Operating & Service Manual 17170-90001 3112D1
 
ETT Keyboard rk4D 
 
GAMMON Aqua-Glo Series V Water Detector Kit GTP-322*
 
National Instruments Instrumentation Reference & Catalog 1997 3212A1
 
HP 17402A DC Preamplifier Operating & Service Manual 17402-90000 3112D1
 
HP 35677A/B S-Parameter Test Set Service Manual 35677-90011 3112D1
 
REGO CRYO-Flow Products MFA2003T 4802 NEW , 94B-1
 
ExperData CSMA/CD Tester Ethernet E20 E-20 + TVLP + 2 Keys Rack4c 
 
Microtest Inc, M-Test Pair Scanner*
 
HP 53131A/132A/181A Assembly Level Service Guide 53131-90039 3112D1
 
PACK OF 6 Valenite ESU-12447 
 
Barnant Vacuum Pump Model 400-2901
 
SMC VQ1500-5B Valve  DC24V 1W 0.1-0.7MPa, 95F-1
 
Hubbell 560P9W, 120/208VAC Plug*
 
Key Digital Flash Matrix KD-MSW8x3 Matrix Switcher  
 
3M 8XE Fiber Optic LED Source 12XE Fiber Optic Power Meter Rack4D 
 
T&B RussellStoll 7324-78 / 7328-78 Plug Connector 7303btm
 
DYMAX PC-3D Light-Welder w/Foot Pedal*
 
Midland-Ross Russell & Stoll 7328 60A 600VAC 250VAC/DC 7303btm
 
Crouse-Hinds APJ-6463 60A 3W 4P Arktite Model M54 250VDC 600VAC Connector 
 
128 RPM 36 VDC MAGNETEK RH GEARMOTOR
 
Agilent E5035B; E5023A Spinstand Interface Module* 
 
HP 5385A Frequency Counter 7602D
 
Appleton Powertite ACP6034BC Plug 60A 3w 4p 250VDC 600VAC 7303btm
 
Hubbell 563C6W 63A-6h/220/380V~ 3P+N+ Connector 7303btm
 
RussellStoll JCS1534LK 150A 250V/600VAC Connector 7303btm
 
Square D PowerLink QO230AS SERIES 2 pole Unit Voltage: 120/240, 95F-1
 
Allen-Bradley 1747-L20C Ser C Processor Unit 20 I/O 8601G
 
Agilent E5036A Filter Matrix Module + E5022A VXI Board*
 
HP 5108A Waveform Recorder 2 Channel 20 MHz, Rack8Btm
 
Festo 196659 CDV15.0-MT2H-5JS Solenoid Valve 8601G
 
Tek P6105A Probe 
 
Festo 196657 CDV15.0-MT2H-5LS Solenoid Valve 8601G
 
Allen-Bradley 1771-IBD 10-30VDC Input Module 8601G 
 
Cannon Plugs CCT 1612 Crimping Tool*
 
SMC MDHR2C-10R Actuator Gripper Rotary 0.2-0.6MPa , 105D-1
 
National Instruments 181060-01 Card Kit- 8103C*
 
SMC VH300-N03 Hand Valve 3/8 NPT, 7103A-2
 
Allen-Bradley 1771-OA AC Input Module 8601G
 
Tektronix TE 1410/TLA 510 w/ (2) 92A96 Probe Locations- Rack 6*
 
VertiCom MTS1500E-168-08 B2 Frequency 17600-18100MHz , 105D-1
 
TSX Momentum emecanique 170ADM390 30  170ENT110 00, 98G-3
 
Allen-Bradley 1771-IQ 5-30V DC Selectable Input Module 8601G
 
Coherent 20W Power Meter Head 20-W 7003B-2
 
Opto 22 IDC5Q 4-channel Dc Input 10-32 VDC, 5 VDC Logic,  7201A-1
 
AB Allen-Bradley 1771-OAD AC Output Module 8601G
 
Allen-Bradley 1771-OC 48V DC Output Module Ser B 8601G
 
ADIC 6101 Fibre Channel Bridge*
 
Lot of 4 RDI SM8 Socket Relays, 10A, 300 V, 12-20 AWG, 8 Pin Octal, 8500E
 
Allen-Bradley 1771-P4S Power Supply 120V 8601G
 
Hubbell 5100P7W Plug & Hubbell 5100C7W Receptacle*
 
DEL-TRON R451, Slide Positioning Stage with Mitutoyo  Microme .001' 0-1', 105D-1
 
 Condor HBB15-1.5-A+ Power Supply, 98G-3
 
Colorado Data Systems SYS68K  IBC-20/4
 
emecanique Square D GS1DDU3 Switch 600VAC GS1-DDU3, 81B-3
 
Hubbell 5100C7W; 100A, 480VAC Receptacle*
 
 Condor HBB5-3/OVP-A+  Power Supply 12VDC, 98G-3
 
Convum CVA-15HS-24BL 6512 Valve 8601G
 
Idec RTE-PN1 & RTE-BF1 Electronic Timers w/ SR3B-05 Connector, 8304E
 
SMC SY5420-5LOZD-C6 Valve 8601G
 
Jelight CHIPhERASER  Model No. 10*
 
SMC PF2W504T-03-1 Flow Switch*
 
Flash Matrix KD-MSW8x3 Matrix Switcher rk4D 
 
Advanced Motion Controls DQ111EE15A40LDCA Servo Drive, 98G-3
 
VISX WS1 WaveScan Wavefront Laser System- Rack 14*
 
BEI H25D-SS-12.500-M5-ABZC-8830-SM18-S
 
Vanzetti Systems CS6 Calibration Source*
 
TENMA 72-4015 NTSC Generator*
 
 Omron Relay LY2N 24VAC coil, 1672HP, 105D-1
 
Tektronix 1241 Logic Analyzer w/ 12RCO1 Printer Suppt. ROM Pack
 
Electrosonic MS9500GL HDFrEND plus Player*
 
Tektronix S-3A Sampling Head + Accessories 010-0364-00/010-0365-00/013-0097-01
 
WAVETEK 4101 Automation Modulation Meter 1.5 MHz-2.0GHz*
 
ALLEN BRADLEY 1336T-R003-AA-GT3EN Ser. C  1336TR003AAGT3EN
 
Hohner SP1707 Encoder 5V SP-1707, 91B-3
 
BOSCH CL-NT3; 1070062309 Controller*
 
MediaSonic MS9400; HDFrEND HD Player*
 
Cisco DS-X9224-96K9; 24-Port, 8Gbps Fibre Channel Switching Module*
 
Sun Hydraulics 770-248, 48VDC Module*
 
Magnecraft W211ACPSOX-5 Time Delay Relay*
 
Allen-Bradley ControlNet Coax T Tap/RT ANG BNC / 1786 / 1786-TPR
 
Numatics 153SA431E 24VDC Valve, 7103B-2
 
Fafnir G1207KRRB Bearing 81B-3 
 
Electrosonic MS9500 HDFrEND plus Player*
 
Nais SP2-DC5V Minniature 8-Pin Power Relay *New In Original Packaging*, 8304E
 
Tektronix 2205 20MHz Oscilloscope
 
Electro-Craft E530 0530-20-016 with out plug, 105D-2
 
Numatics 152SA415K Mark 15 Solenoid Valve *NEW*, 7103A-3
 
Allen Bradley 1786-TPS Series C Control Net Tap New Surplus 

Square D Vigirex RH99P Ground-Fault Relay 220/240V , 81B-3
 
KEYENCE N-48 Reader/Power Supply*
 
Newport 268-TC2 Digital Pyrometer Thermometer 4.5W , 98G-3
 
KEYENCE N-48 Reader/Power Supply (No Box)*
 
Numatics 11SAD421B Solenoid Vales, 3 Mounted Together, 7101C-1
 
Kraus & Naimer CA10B On-Off Switch , 81B-3
 
HP 10897B Laser Asix, VME bus Board- 8401A*
 
Parker 1/4" Filter 06F18BC NEW , 95F-2 
 
Buchanan Tools 612118 Crimping Tool*
 
Leeson CM24D42NZ2D 4200RPM Motor M1110018.00 28V , 105D-2
 
ASCO Red Hat 8210G33VM Valve 3/8" 10.1W Vacuum 10-3, 7102B-2

AB Allen-Bradley 42GRP-9040 Series A, 98G-3
 
Honeywell 2715 "VINTAGE" Potentiometer*
 
Veeco 0340-655-04 Rev A Auto Neutralization Control Module, 7103C
 
Allen Bradley 1172-LW D; MINI-PLC-2/17 Processor*
 
Tek P6106A Probe
 
Gaymar Solid State T/Pump (For Heat Therapy) - 7503A*
 
Tek P6131 Probe
 
Pack of 7 Square D B2.10 Overload Relay Thermal Units, 7704E-1
 
HP 8116A Pulse/Function Generator*
 
Pack of 7 Square D B2.40 Overload Relay Thermal Units, 7704E-1
 
OMRON K3TL-TA11-C Digital Display- 8501B*
 
Radiometer Copenhagen PHM210 Standard pH Meter*
 
HP 5384A Frequency Counter- Rack 7*
 
SUPERCON 25 ampere Socket Receptacle RS25GBL - Blue *eBay1992
 
Mac Valves, INC. PME-611RAAA.0435 Solenoid Pneumatic Valve , 95F-3
 
ECII Flow Control TMN750S 5B96 Valve, 94B-1
 
Solomat MPM 500e Multi-Function Environmental Measurement Meter- Rack 5*
 
ECII REGO Flow Control MFG125BF NEW, 95F-3