在60年代，汽车生产流水线的自动控制系统基本上都是由继电器控制装置构成的。当时汽车的每一次改型都直接导致继电器控制装置的重新设计和安装。随着生产的发展，汽车型号更新的周期愈来愈短，这样，继电器控制装置就需要经常地重新设计和安装，十分费时，费工，费料，甚至阻碍了更新周期的缩短。为了改变这一现状，美国通用汽车公司在1969年公开招标，要求用新的控制装置取代继电器控制装置，并提出了十项招标指标，即：

(1）编程方便，现场可修改程序；

(2）维修方便，采用模块化结构；

(3）可靠性高于继电器控制装置；

(4）体积小于继电器控制装置；

(5）数据可直接送入管理计算机；

(6）成本可与继电器控制装置竞争；

(7）输入可以是交流115V；

(8）输出为交流115V，2A以上，能直接驱动电磁阀，接触器等；

(9）在扩展时，原系统只要很小变更；

(10）用户程序存储器容量至少能扩展到4K。

福州卓凯电子科技有限公司

★★★★★商务QQ：879520885

★★★★★联系电话：0591-22983857/17705012279

★★★★★联系人：林工

★★★★★地址：福州市闽侯西江滨大道77号正荣润园一号楼1205室

★★★★★★★★★★★★★

★销售服务

【服务说明】现货配送至全国各地含税含运费

【产品质量】全新原装正品，有发票

【产品优势】专业销售 薄利多销 信誉好，价格低，货期短，服务周到

★★★★★★★★★★★★★

IFM Efector200 E20161 Through Beam Sensor FE-30-A-A-R6   Free Ship

IFM Efector200 OG5070 Photoelectric Sensor OGELFNKG/V4A/US-100  Free Ship

IFM Efector200 OGE280 Photo Sensor OGE-DPKG/US/CUBE   Free

IFM Electronic OV310 Opto-Amplifier Type OV0012  in Original Box Free Ship

IFM FT-00-P-A-E3 Fiberoptic Sensor   Free

IFM IF5763 Sensor IFA2002-FRKG/US-100-IRF   Free

IFM IF5896 Sensor IFK2004BFRKG/2LED/US-104-IRF   Free

IFM IG5773 Sensor IGA2005-FRKG/US-100-IRF   Free

IFM II5453 Proximity Switch IIB3010-ANKG/US-100-DNS With Cable

IFM MK5013 Inductive Proximity Switch MKP3000-BPKG/US   Free

IFM OJ5026 Photo Electric Sensor OJP-FPKG/S0/AS   Free

IFM PN5007 efector500 Pressure Sensor PN-001BRBR14-HFPKG/US

IFM TD2813 Sensor TD-050FFEC01-A-ZVG/US  in Original Box Free

IKO CR28UU Cam Follower   Free

IKO Nippon CR22V Cam Follower   Free

ILsco CAN-300 Copper Neutral Bar Kit 600V for 250MCM-6 Tap 14-6

Indramat Interbus RME12.2-32-DC024 VGC!!! W/Guarantee Free

Inline 1"CF8M Stainless Steel Valve 1000MOG  Free

Intersection Development #416A-3 Loop Detector 120 Volts VGC!!! Free

IR / ARO / Economair #MQ2510-120 Pneumatic Cylinder

IR / ARO / Economair MQ3519-120 Pneumatic Cylinder

IR Micro TAS Plus 93970820D Torque Controller Drive VGC!!! Free

IST #581-2C Out Put Circuit Board V.G.C

ITD Automation Dresser ITD572243A Board Assembly W/Guarantee VGC!! Free

ITE #A01ED62 Auxiliary Switch 15 Amp 125/250 Volts VGC!!! Free

ITE #A01ED62 Auxiliary Switch 15 Amp 125/250 Volts VGC!!! Free

ITE E63S100A Circuit Breaker 3 Pole 100 Amp 600V W/Auxiliary Switch GC Free Ship

IVO #F518.650AACB Resettable Counter 120 Volts VGC!!! Free

IVO #N103.03BF33A Digital Counter 12-48V AC/DC  Free

JAF #W203-2RS/C-3 Roller Bearing   Free

Johnson Controls A19DAC-1G Temperature Control 100/240*   Free Ship

Johnson Controls FTG18A-600R Probe for P32 Series   Free Ship

Johnson Controls Honeywell Y66FUD-1C Transformer 75VA Pri 277/480V Sec 25V

Johnson Controls T-5500-1051, 3-1/2" Temp Indicator 50 to 100F  Free Ship

Jokab Safety RT7A Relay 115 Volts   Free .

Josly Clark / Ward Leonard #335L1 5 Operating Coil 120 Volts NEMA 5 Coil VGC!!!

Joslyn Clark #61S0002069 Rheostat 2,500 Ohms 600 Volts ED #70046 in G.C.

Joslyn Clark #61S0009705 Rheostat 500 Ohms 600 Volts ED #70321 in G.C.

Joslyn Clark / Sylvania CY-33-1 Three Pole Silver Contact Kit for Size 3

Joslyn Clark / Ward Leonard #5M-052 Main Contact Kit for Size 2  Free Ship

Joslyn Clark / Ward Leonard #5M-057 Main Contact Kit  Free

Joslyn Clark 100T-5GR Heavy Duty Guard Ring 600V Max NAED #24649

Joslyn Clark 100T-PB5R Push Button W/Large Red Button NAED #24152

Joslyn Clark 100T-PB5R Push Button W/Large Red Button NAED #24152

Joslyn Clark 100T-PBLF80 Push Button illuminated NAED #24258

Joslyn Clark 100T-PBMA Maintained Interlock NAED #24674

Joslyn Clark 100T-PLF80 Lighted Unit 24V AC/DC

Joslyn Clark 100T-PLR20 Pilot Light 600V or less NAED #24327

Joslyn Clark 100T-SK3M3A Selector Switch Keyed 600V NAED #24483

Joslyn Clark 100T-SL3MC4 Selector Switch 600V or less   Free

Joslyn Clark 100T-SS3BB3 Selector Switch 600V or Less   Free

Joslyn Clark 146-250 Operating Coil 300 VDC VGC!!! Free

Joslyn Clark 1X4 Heavy Duty Grey Push Button 600V Max  Free

Joslyn Clark 3283.6-1 Terminal Assembly   Free

Joslyn Clark 447-9405-23 HR Relay Series A Plate 600V or Less 240V DC Coil

Joslyn Clark 5999-2381 One Pole Contact kit 700 Amp O.E.M.  Free

Joslyn Clark 5999-3164 Mechanical Interlock   Free

Joslyn Clark 5999-3362 Auxiliary   Free

Joslyn Clark 5ML041 Operating 120 Volts 320-L1 CCF  Free

Joslyn Clark TB139-1 Operating Coil 120 Volts  Free

Kawasaki 50999-1360 Robotic PC Interface Board   Free

Kawasaki 50999-1470 Robotic PC Interface Board   Free

Kelk #PS/2 Power Supply Load Measuring System 21730-M  Free

Kennametal Erickson 100TGC140M Metric 14.0MM Collet TG100  Free

Kennametal KTK2L KC730 Carbide Insert  Free

Kennametal NG2047L KC730 Carbide Insert  Free

Kennametal NG2M275LK KC730 Carbide Insert  Free

Kennametal NG3047L KC730 Carbide Insert  Free

Kennametal NG3062L K313 Carbide Insert  Free

Keyence EH-108 Sensor Assembly   with Free

Keyence EH-308 Photoelectric Proximity Sensor   Free

Keyence EH-308S S/S Photoelectric Proximity Sensor   Free

Keyence FS-V22R Dual Digital Fiber Sensor   Free

Keyence KV-C32TA Promgrammable Controller  in Original Box Free

Keyence KV-C32XA Promgrammable Controller  in Original Box Free

Kikusui PCR500L AC Power Supply Very Good Condition!!!

Klingelnberg 411971A Temp Sensor Testo 60009999

Klingelnberg 411971A Temp Sensor Testo 60009999

Klockner Moeller DIL00L-31-NA Contactor 120V Coil   Free

Klockner Moeller EFOC Lamp Block 2.6W 300VAC  Free

Klockner Moeller G-DIL 00M Operating Coil 24 VDC   Free

Klockner Moeller J-DIL 0-NA Operating Coil 24 Volts  Free

Klockner Moeller J-DIL2-NA Operating Coil 120 Volts   Free

Klockner Moeller RC B DIL415, RC Suppressor Unit  Free

Kollmorgen ServoTronix PRD-00492000-00 Control Board Assembly VGC!!!

Kop-Flex 2HEB SLV0103 Coupling 6 Bolt Holes  Free

Kraus & Naimer #CA20B USL217 L75010 Mode Selector Switch W/Keys

Kraus & Naimer #R2620 D024/2222-001 Contactor 25 Amp, Man Roland 07.94521-0094