SIEMENS 6ES5490-7LB21
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硬件措施：

主要模塊均采用大規(guī)模或超大規(guī)模集成電路，大量開關(guān)動(dòng)作由無(wú)觸點(diǎn)的電子存儲(chǔ)器完成，I/O系統(tǒng)設(shè)計(jì)有完善的通道保護(hù)和信號(hào)調(diào)理電路。
①    屏蔽——對(duì)電源變壓器、CPU、編程器等主要部件，采用導(dǎo)電、導(dǎo)磁良好的材料進(jìn)行屏蔽，以防外界干擾。
②    濾波——對(duì)供電系統(tǒng)及輸入線路采用多種形式的濾波，如LC或π型濾波網(wǎng)絡(luò)，以消除或抑制高頻干擾，也削弱了各種模塊之間的相互影響。
③    電源調(diào)整與保護(hù)——對(duì)微處理器這個(gè)核心部件所需的+5V電源，采用多級(jí)濾波，并用集成電壓調(diào)整器進(jìn)行調(diào)整，以適應(yīng)交流電網(wǎng)的波動(dòng)和過(guò)電壓、欠電壓的影響。
④    隔離——在微處理器與I/O電路之間，采用光電隔離措施，有效地隔離I/O接口與CPU之間電的，減少故障和誤動(dòng)作；各I/O口之間亦彼此隔離。
⑤    采用模塊式結(jié)構(gòu)——這種結(jié)構(gòu)有助于在故障情況下短時(shí)修復(fù)。一旦查出某一模塊出現(xiàn)故障，能迅速更換，使系統(tǒng)恢復(fù)正常工作；同時(shí)也有助于加快查找故障原因。

   ①廈門莫格電氣自動(dòng)化有限公司     
：劉水仙（銷售工程師）                                        
   ②手   機(jī)：/
：3443643092                        
   ③郵    箱：3443643092
傳    真：（請(qǐng)備注劉工收)
   ④主營(yíng)產(chǎn)品：AB，ABB，GE，本特利，福克斯波羅，英維斯，西屋，艾默生，橫河

ASCO 120V, 60Hz, 6W, 1/4, 3/32, 100PSI SOLENOID VALVE WP8324 27
 
VICKERS 1-1/2"NPT, 1"NPT, 1/4"NPT, 1/2"NPT VALVE 626192, 883901
 
MUELLER 1" X 1" X 1/2" Y-STRAINER VALVE 70 WCB
 
NUMATICS 300 PSI 1/4" NPT SHUT-OFF VALVE, VK21-02 *NEW*
 
APOLLO 1000 CWP 3/4" NPT 316 S.S. CARBON STEEL 3-PC BALL VALVE, 83R-244-02 *NEW*
 
INLINE INDUSTRIES 1000 WOG STAINLESS STEEL 1-1/2" BALL VALVE
 
UNKNOWN MFG * 1/2" VALVE CF8M * 200WOG
 
PARKER SCHRADER BELLOWS LOCK OUT VALVE 1/2" 250PSI LV4BA8
 
LUBE-DEVICE 1-3/4" BRASS LUBRICATING LINE FILTER
 
JAMESBURY SERIES 100 BALL VALVE STAINLESS STEEL 2000 WOG 1"
 
CASHCO 1/4IN. NPT 400PSIG PRESSURE REDUCING REGULATOR 002M
 
10" CF8M KNIFE GATE VALVE 7477-300
 
MUESSCO 2" SIZE, 200 PSI CHECK VALVE 71 *NEW*
 
TEMP-PRESS 1/4" STAINLESS STEEL CONTROL VALVE P78S
 
PARKER 3/8" NPT SUBBASE PS330000P *NEW*
 
PENBERTHY 64251-040 1/2 NPTM 3/8 NPTF GAGECOCK SET
 
1" BALL VALVE CF8M 2000WOG

    
JAMESBURY SERIES 100 BALL VALVE CF8M STAINLESS STEEL 2000 WOG 1-1/4"
 
MILWAUKEE VALVE CO. BALL VALVE 1-1/2" 1000 WOG STAINLESS STEEL CF8M
 
APOLLO 1/2 HIGH PRESSURE CARBON STEEL VALVE 72-803-01
 
FESTO PNEUMATIC PRESSURE VALVE LR-M2-G1/4-07GI
 
ITT FABRI-VALVE 150CWP S316 8" KNIFE GATE VALVE %FV-C37023B2800
 
SUN HYDRAULICS 4PSI, FREE FLOW CHECK VALVE CXED-XAN, 0139-413X *NEW*
 
LADISH CO. 1-1/2" 200 CF7M STEEL GATE VALVE V-8250-0107-15 / 1501-004
 
VERSA 200 PSIG 50/60HZ 1/2' NPT SOLENOID VALVE, VJJ4503-29 *NEW*
 
ITT S316 SIZE 6" KNIFE GATE FABRI-VALVE F440743 C67
 
BURKERT 3/8" NPT 24V SOLENOID VALVE, 0280 *NEW*
 
NELES-JAMESBURY 3/4" LP BALL VALVE BODY CF8M / 3C-3600MT-3
 
NUMATICS, 14.5-145 PSIG AIR, 1/8" & 1/4" NPT, PILOT VALVE L12PP6520000000
 
SWAGELOK 100PSIG @ 450°F STAINLESS STEEL 2-WAY BALL VALVE SS-62ST4/BABG-0?5 *NEW*
 
VICKERS 110/120V .48/.46A 1450 PSI HYDRAULIC VALVE, DG4V-3S-6C-M-U-?B5-60
 
HANSEN TECHNOLOGIES 3/8" NPT GLOBE SHUT-OFF VALVE, GT038H *NEW*
 
ALOYCO 1" GATE VALVE 110 CF3M 1-150
 
GRINNELL 1-1/2" GATE VALVE 308-M440
 
WATTS REGULATOR 125 PSI 210?°F 3/4"NPT 40XL RELIEF VALVE, M12
 
NUMATICS 150PSI 1-3/4" X 3/4"OAL MINI SOLENOID VALVE 031SA415Q011Z
 
SWAGELOK 1/2" 5000 PSIG STAINLESS STEEL BALL VALVE, SS-1RS8
 
NORTH/EMED 5" DIAMETER, VALVE WHEEL LOCKOUT VL3-R, VS04R *NEW*
 
UFM ROCON WATER CONTROL VALVE WCV-S-4-H-7-E3C?5F2-D1-L-E662
 
2" 1000CWP BRASS GATE VALVE 300S
 
TRERICE 1/2"NPT, 6"STEM, 20/240F, THERMOMETER B8520605 *NEW*
 
FLOW CONTROLS LIQUID LINE FILTER/DRIER 060177 / ADK 30 5 S NIB
 
CL2 1-1/4" CHECK ORBIT VALVE
 
VELAN 1-1/2" 275PSI BALL VALVE CF8M / W330 / LYV09C
 
ASCO 3/8" PIPE, 10.1W, 100PSI, SOLENOID VALVE 8263G200
 
FISHER ELECTRO-PNEUMAT?IC 3-15PSI 5/8" VALVE ACTUATOR 513
 
PARKER 1/8"NPT 2000PSI FLOW CONTROL VAVLE PF200B *NEW*