ABB WT98
ABB WT98
ABB WT98
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廈門(mén)莫格電氣自動(dòng)化有限公司
:祖巧麗
:
大、中型PLC(如西門(mén)子的S7-300和S7-400系列)一般采用模塊式結(jié)構(gòu)。模塊式PLC用搭積木的方式組成系統(tǒng),它由機(jī)架和模塊組成(見(jiàn)圖2-2)。模塊插在模塊插座上,后者焊在機(jī)架的總線連接板上,有的廠家將機(jī)架稱(chēng)為基板。PLC廠家備有不同槽數(shù)的機(jī)架供用戶選用,如果一個(gè)機(jī)架容納不下所選用的模塊,可以增設(shè)一個(gè)或數(shù)個(gè)擴(kuò)展機(jī)架,各機(jī)架之間用I/O擴(kuò)展電纜相連,有的PLC需要通過(guò)接口模塊來(lái)連接各機(jī)架。
用戶可以選用不同檔次的CPU模塊、品種繁多的I/O模塊和特殊功能模塊,對(duì)硬件配置的選擇余地較大,維修時(shí)更換模塊也很方便。
有的模塊式PLC(如西門(mén)子的S7-300系列PLC)沒(méi)有機(jī)架,各模塊安裝在鋁質(zhì)導(dǎo)軌上,相鄰的模塊之間用模塊下面的U形總線連接器連接。
CHECK VALVE INC. UN-3-050-C CHECK VALVE *NEW*
ARMSTRONG 400PSIG 1/2" STEAM TRAP 1811
PARKER CHECK HYDRAULIC VALVE CPS600S -11EZ
YARWAY CLASS 35 1/2" NPT 250 PSI Y STRAINER VALVE, 901
BURKERT 120V 8W 1/4" NPT 0330 D 1/8 FKM BR SOLENOID VALVE, 00453021, NIB
REXROTH 24V HYDRAULIC DIRECTIONAL VALVE 4WE6J61/EG24N9D?K24L/B10
PARKER 3/8"NPT FLOW CONTROL LOCKING VALVE FG3PKCLC1
CIRCLE SEAL INLINE RELIEF VALVE 520B-6MP-60 *NEW*
PARKER 150PSI, 1/4"NPT, FILTER/REGULATO?R ASSEMBLY 06E22A18AC, 16L22BE *NEW*
WORCESTER 1/4"NPT BALL VALVE 444TR11
DEZURIK CI BODY 316 LINER/GATE 150CWP SIZE 6" KNIFE GATE VALVE, NO LABEL
CIRCLE SEAL INLINE RELIEF VALVE 520B-6MP-60 *NEW, SEALED*
AUTOMAX NOVA 250 ACTUATOR, LABEL W/ VELAN STEEL CF8M 6" 150 VALVE
AUTOMATIC VALVE 10BAR PNEUMATIC SOLENOID VALVE NNB 413D43S39DS3-DB?7
BRAY 6" SIZE, 175 PSI LUG STYLE BUTTERFLY VALVE 31-124
ECLIPSE 2.0 PSIG 140°F 1-1/2" NPT ADJUSTABLE BIAS PROPORTIONATOR, 106 ABP *NEW*
MHV&F CO. 4" 125S 200WOG VALVE 404048 104229
MUELLER 176 GAS BALL VALVE 1/2"
PARKER SKINNER FLUID CONTROL SOLENOID VALVE 7131TBN2JV00 *NEW*
2" VALVE T250G
ROSS LUBRICATING OIL COOLER 34M501-2A2
PEGASUS SERVO VALVE 10(1200)-.65(75?0)-750 / 120UE
FABRI-VALVE 8IN STAINLESS STEEL GATE VALVE 0378316 103564
TOYO-OKI HYDRAULIC VALVE HG1-DG3-06 / 5H9110
VICKERS 1" NPTF 3000 PSI 3 MICRON FILTER VALVE, OFP-15-P-3M-11
LINCOLN DIVIDER VALVE UV-35T *NEW*
SMC 1/2" NPT 5-PORT VALVE SUBPLATE, X11, NNB