490NRP95400施耐德/Schneider
為適應(yīng)工業(yè)環(huán)境使用,與一般控制裝置相比較,PLC機(jī)有以下特點(diǎn):
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。
廈門莫格電氣自動(dòng)化有限公司
:
:張美霞
電 話:/
傳 真:
地 址: 廈門市思明區(qū)檳榔西里197號(hào)第四層B19單元
http://www.mogget。。cn/
ROTAC ROTARY ACTUATOR DUEL SHAFT LP-24-IV
NUMATICS LINEAR SLIDE LC10602H16DXX
BOSCH PNEUMATIC STOP GATE 3842 525 109 *NNB*
SMC JAF140-30-150 FLOATING JOINT, NIB
SMC PNEUMATIC CYLINDER CNDAFN80N-125-D
PARKER K065 N035 PILOT VALVE, NNB
NUMATICS .916" NPT FILTER F30B-06
SMC CYLINDER CLAFN80-75-D-XC?18
SMC PNEUMATIC CYLINDER MYH32-K5232-400
FESTO 63MM BORE 300MM STROKE PNEUMATIC CYLINDER, DNC-63-300-PPV-?A-KP, NNB
ASCO 24DC-FT 11.2W SOLENOID N262.444 E / 400-425-142
NUMATICS 100-120V .30A 150 PSIG-AIR SOLENOID VALVE, I35SA415K
PARKER HYDRAULIC FILTER 926988Q NIB
EATON AEROQUIP FJ9122-1212 37JIC FEMALE SWIVEL ,NNB
BIMBA PNEUMATIC CYLINDER 245-DP
DEZURIK CYLINDER ACTUATOR 941816R001 44482
HOWA ROTATING HYDRAULIC CHUCK CYLINDER HH11C 80
PMV 800kPA ELECTRO-PNEUMAT?IC DOUBLE ACTING VALVE POSITIONER P-2020 NIB
WHITEY 200PSI MAX 90 PNEUMATIC SPRING RETURN ACTUATOR 133 SR W/ MB-133
CMT 80 PSI, 2.5" STROKE DOUBLE ACTING IMPACT MARKER 288SUBK.OB.25.R
YUKEN CYLINDER CJT70-TC40B320B?-ABA-EK 20A
PARKER SCHRADER BELLOWS 24 VDC SOLENOID PNEUMATIC VALVE W2154L579B
YUKEN HYDRAULIC CYLINDER CJT70-FA32B325B?-BCB-EK 20A
FESTO PNEUMATIC CYLINDER DZH-50-200PPV-A
NUMATICS 120V, .16A, 50/60Hz, SOLENOID VALVE 554BB43AK
PHD PNEUMATIC PARALLEL GRIPPER 7980-03-0201
FESTO CYLINDER DKE-100-350-PPV?-A
NUMATICS 24VDC 4.0W 150 PSIG-AIR PNEUMATIC SOLENOID VALVE, I24BB415MP56Y
NUMATICS 110/120V .06A 150 PSIG-AIR DOUBLE SOLENOID VALVE, I34BB400KP14D
MAC 24VDC 2.5W 25-150 PSI PNEUMATIC SOLENOID VALVE, 6313D-611-PM-59?1DA
PARKER PNEUMATIC 150PSI 1000KPA FILTER/REGULATO?R 07F41BC 104112
ENERPAC STLS-121 2400LB THREADED BODY SWING CYLINDER, NNB
CKD SSD-ML-40-40 PNEUMATIC CYLINDER
PARKER E-43-B-0500 INSTRUMENT GRADE POLYETHYLENE TUBING .170" X 500', NIB
NUMATICS 110/120V .08A SOLENOID VALVE, 237-325B
SMC CYLINDER CDLAFN100-175-E
BIMBA SS PNEUMATIC CYLINDER SS311-R
PARKER * SAE CODE 61 FLANGE HEAD * 11571-16-16
NUMATICS SOLENOID AIR PILOT ACTUATED VALVE R20BB500MP00061 / R20BBD00MP00061
SMC 3.5MPa PNEUMATIC CYLINDER CHDAL40-400-J59?WL
INTEGRAL HYDRAULIK HYDRAULIC CYLINDER1009882?1 160BAR 018-1354-062-00?3
NUMATICS 238610 110/120V 50/60HZ SOLENOID VALVE COIL, MP-C-080-032-D
MILCO PNEUMATIC CYLINDER CCC-204-4.0 REV B 100712
90 BRASS ELBOW ASSORTMENT, LOT OF 9
NUMATICS SERIES ISO5599/11 150 PSIG SOLENOID VALVE I24BB415MP
PARKER JIC P 16 SS FLUID CONNECTING NUT, LOT OF 17
HYDRAULIC THREAD NUT HMV 134/A-101
NUMATICS 150 PSIG SOLENOID VALVE I24SS415K
NUMATICS 110/120V .37A 150 PSIG-AIR SOLENOID VALVE W/ BASE, 554SA43AK000030
PARKER * PARKER TRIPLE-LOK 90 ELBOW * UNKNOWN
NUMATICS PNEUMATIC SOLENOID VALVE I35RS115J00 0000 100881
HYDAC BETAFIT 1.06.39D03BN HYDRAULIC FILTER ELEMENT, NIB
NORGREN 175oF, 300PSIG, REGULATOR R24-401-RNXA
FESTO 32MM BORE 250MM STROKE PNEUMATIC CYLINDER, DNU-32-250-PPV-?A
YUKEN HYDRAULIC CYLINDER CJT70-FA32B50B-?PD-EK
SMC CYLINDER CDNAFN80N-100-D?-J59WLS
LUBRIQUIP PUMP ASSEMBLY AL-25, 521-000-020, L-90
FESTO 63MM BORE 50MM STROKE PNEUMATIC CYLINDER, DKE-63-50-PPV-A
MAC 24 VDC 6.0W SOLENOID VALVE 280B-506AAAA
SMC 50MM BORE 200MM STROKE PNEUMATIC CYLINDER CNAFN50N-200-D
YUKEN HYDRAULIC CYLINDER CJT70-FA32B600B?-BAD
BI * BI UNION FITTING * UNKNOWN
FESTO 40MM BORE 400MM STROKE PNEUMATIC CYLINDER, DNC-40-400-PPV-?A, NNB
PARKER P11771 -20-20 CRIMP FITTING SAE CODE 61 FLANGE HEAD 45 ELBOW
YUKEN CYLINDER CJT70-FA80B80H-?CBA-N 2012-411A
MAC PR65C-11BA 150 PSI PR65C SERIES PRESSURE REGULATOR, NNB
FESTO 145 PSI, SERIES ED08-14918 PNEUMATIC CYLINDER ADV-40-50-A
BOSCH RACINE 221887
SMC VXZ2240L SINGLE UNIT ZERO DIFFERENTIAL PILOT OPERATED DIAPHRAGM VALVE
ASHCROFT DURAGAUGE BRONZE TUBE 30-0VACUUM-IN/H?G. GAUGE 45-1379 103764
PARKER 11971-32-32 SAE CODE 61 FLANGE HEAD 90 ELBOW
MAC 6311A-512-PM-11?1DA 110/120 VOLTS 50/60 SOLENOID VALVE