DSTD108P
DSTD108P
：祖巧麗
：
1. 可靠性高，抗*力強(qiáng)
工業(yè)生產(chǎn)對(duì)控制設(shè)備的可靠性要求：
①平均故障間隔時(shí)間長(zhǎng)
②故障修復(fù)時(shí)間（平均修復(fù)時(shí)間）短
任何電子設(shè)備產(chǎn)生的故障，通常為兩種：
①偶發(fā)性故障。由于外界惡劣環(huán)境如電磁干擾、超高溫、超低溫、過(guò)電壓、欠電壓、振動(dòng)等引起的故障。這類故障，只要不引起系統(tǒng)部件的損壞，一旦環(huán)境條件恢復(fù)正常，系統(tǒng)也隨之恢復(fù)正常。但對(duì)PLC而言，受外界影響后，內(nèi)部存儲(chǔ)的信息可能被破壞。
②*性故障。由于元器件不可恢復(fù)的破壞而引起的故障。
如果能限制偶發(fā)性故障的發(fā)生條件，如果能使PLC在惡劣環(huán)境中不受影響或能把影響的后果限制在zui小范圍，使PLC在惡劣條件消失后自動(dòng)恢復(fù)正常，這樣就能提高平均故障間隔時(shí)間；如果能在PLC上增加一些診斷措施和適當(dāng)?shù)谋Ｗo(hù)手段，在*性故障出現(xiàn)時(shí)，能很快查出故障發(fā)生點(diǎn)，并將故障限制在局部，就能降低PLC的平均修復(fù)時(shí)間。為此，各PLC的生產(chǎn)廠商在硬件和軟件方面采取了多種措施，使PLC除了本身具有較強(qiáng)的自診斷能力，能及時(shí)給出出錯(cuò)信息，停止運(yùn)行等待修復(fù)外，還使PLC具有了很強(qiáng)的抗*力。
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ROVALVE 6 INCH 150 PSIG KNIFE GATE VALVE S20-B MSS
LADISH V218 1/2" CHECK VALVE V-5260-0607-05B
LADISH 1/2" 150 CHECK VALVE 8274-0714-05B
ASCO RED-HAT 3/8" 2W SOLENOID VALVE NIB OFSF8030G10 105009
PARKER 110-120V, 50/60Hz, 1/4", 10W, 2-WAY SOLENOID VALVE 73216BN2MT00 *NEW*
NORRIS 3" 200PSIG-CWP BUTTERFLY VALVE R1011-13AA-1A
FESTO 24VDC SOLENOID COIL MSSD-F-24-LED-M?12-SA 186579 *NEW*
PARKER 24VDC 6W 300 PSI 1/16" ORIFICE SOLENOID VALVE, 3121BBN1GV00RRT?1J1C2 *NEW*
CDK VALVE CVS2-50A-10-02H?S-3 NIB
EEP /PRODUCTS 500 PSI PRESSURE 3/8" VALVE 64250-220
VICKERS DIRECTIONAL VALVE CG5V 6FW D MUB6 11
ABZ 6" 200PSI CAST IRON BUTTERFLY VALVE W/ ACTUATOR SR 200 DA
VICKERS 5000PSI DIRECTIONAL CONTROL SOLENOID VALVE DG4V-3-2C-M-WL-?B-40
ASCO 3/4 INCH, 120V, 50/60Hz, 10.5W, SOLENOID VALVE 8030B83 *NEW*
HAM-LET 2000psi 1/4" BALL VALVE H-700-SS-L-1/4-?T-LD
JAMESBURY 4" VALVE QUADRA-POWR II ACTUATOR QP3C /M W/ PMV POSITIONER P-2000
REXROTH MANNESMANN CONTROL VALVE 3DREP 6 C-11/25A24NZ4M
NIBCO 1-1/4" BRONZE GLOBE VALVE T-276-AP
ASCO 1/2" NPT, 17.1W, FUEL GAS 5PSI, 3-PIN MALE, SOLENOID VALVE ZBX8214G0202137?9
NELES-JAMESBURY ACTUATOR ST-1200 W/ WAFER-SPHERE VALVE SIZE 12 815W-11-3600-MT
NACHI CHECK VALVE CA-G10-1-20
3" SS BALL VALVE 800 CF8M
PARKER CHECK VALVE VCL6F65A-20 *NEW*
ROSS VALVE BODY SERVICE KIT, 1678K77 *NEW*
APOLLO 600 WOG PSI 1-1/2" NPT BRONZE BALL VALVE, 70-107-P2741 *NEW*
PARKER PILOT VALVE D31VW1BA7570YF NEW
SWAGELOK 3/8" NPT 5000PSIG 100°F 2 WAY FLOW CONTROL VALVE SS-1RS8-SC11
300S 1000W BRASS GATE VALVE NO HANDLE 20139
MILWAUKEE 125 S.W.P 200 W.O.G 1/2" BRONZE VALVE 1148-1158 NNB
LADISH 1/2" GATE VALVE 150 C501517
NUMATICS 5/8" NPT 5-PORT PNEUMATIC VALVE, 33HLD5410000000 *NEW*
R-R&C 1975WOG@100°F 1/2" STEEL GATE VALVE CR-13 / F57-D
HONEYWELL SOLENOID VALVE 7C111P3 15 1SHF7
ITT ENGINEERED VALVES FABRI-VALVE 150CWP 10" KNIFE GATE VALVE C37S316
CU 1/4"CS 10000PSI STEM SHUT-OFF VALVE
1/4" 300 1000 BRASS CHECK VALVE
PARKER HYDRAULIC CONTROL VALVE RCBF1600S0A1AAA *NEW NO BOX*
MAC 24V 4.0W 20-120PSI SMALL 4 WAY AIR VALVE *NEW*
MAC VAC-120PSI, 24VDC, 5.4W, 1/8"NPT, SOLENOID VALVE 35A-SAC-DDAA-1B?A *NEW*
GREEN 3/4" BRASS LINE 3 WAY BALL VALVE
CONBRACO 5/8"NPT 1/2"NPT BRONZE VALVE 45-301
MAC 24V 4.0W 20-120PSI SMALL 4 WAY AIR VALVE *NEW*
MAC VAC-120PSI, 24VDC, 5.4W, 1/8"NPT, SOLENOID VALVE 35A-SAC-DDAA-1B?A *NEW*
GREEN 3/4" BRASS LINE 3 WAY BALL VALVE
CONBRACO 5/8"NPT 1/2"NPT BRONZE VALVE 45-301
VELAN SS316 CLASS 150 SIZE 6 KNIFE GATE VALVE L14-0320B-13BL
PARKER 115/120V 145 PSI 1/4" NPT SOLENOID VALVE, B551AB553C *NEW*
NUMATICS 100-120V, 50/60Hz, .290A, 1/2"NPT 554SA431K *NEW, SEALED*
FESTO 24VDC, 4.5W, 42VAC, 9/7VA, SOLENOID COIL MSFG-24/42-50/6?0-OD *NEW SEALED*
BIMBA FLOW CONTROL FCP2K *NEW*
SMC PNEUMATIC SOLENOID VALVE 3 PIECE ASSEMBLY VQ1171-5LB-C6
