1769-PA2
1769-PA2
本公司有大量庫存現(xiàn)貨，歡迎訂購，當(dāng)天可發(fā)貨！?。。。?！
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廈門莫格電氣自動化有限公司
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地址：廈門市思明區(qū)檳榔西里197號第四層B19單元
主營產(chǎn)品：AB，ABB，GE，本特利，?？怂共_，英維斯，西屋，艾默生，橫河
影響現(xiàn)場輸入給PLC信號出錯的主要原因有：
1)造成傳輸信號線短路或斷路（由于機(jī)械拉扯，線路自身老化，特別是鼠害），當(dāng)傳輸信號線出故障時，現(xiàn)場信號無法傳送給PLC，造成控制出錯；
2)機(jī)械觸點抖動，現(xiàn)場觸點雖然只閉合一次，PLC卻認(rèn)為閉合了多次，雖然硬件加了濾波電路，軟件增加微分指令，但由于PLC掃描周期太短，仍可能在計數(shù)、累加、移位等指令中出錯，出現(xiàn)錯誤控制結(jié)果；
3)現(xiàn)場變送器，機(jī)械開關(guān)自身出故障，如觸點接觸不良，變送器反映現(xiàn)場非電量偏差較大或不能正常工作等，這些故障同樣會使控制系統(tǒng)不能正常工作。
影響執(zhí)行機(jī)構(gòu)出錯的主要原因有：
1)控制負(fù)載的接觸不能可靠動作，PLC發(fā)出了動作指令，但執(zhí)行機(jī)構(gòu)并沒按要求動作；
2)控制變頻器起動，由于變頻器自身故障，變頻器所帶電機(jī)并沒按要求工作；
3)各種電動閥、電磁閥該開的沒能打開，該關(guān)的沒能關(guān)到位，由于執(zhí)行機(jī)構(gòu)沒能按PLC的控制要求動作，使系統(tǒng)無法正常工作，降低了系統(tǒng)可靠性。要提高整個控制系統(tǒng)的可靠性，必須提高輸入信號的可靠性和執(zhí)行機(jī)構(gòu)動作的準(zhǔn)確性，否則PLC應(yīng)能及時發(fā)現(xiàn)問題，用聲光等報警辦法提示給操作人員，盡快排除故障，讓系統(tǒng)安全、可靠、正確地工作。
NUMATICS 24VDC 4.0W 14.5-232 PSIG-AIR SOLENOID VALVE, I22BB500R061D61
NUMATICS NPTF 150 PSIG-AIR PNEUMATIC SOLENOID VALVE, I23BB500MP14X61 NIB
NUMATICS 120V .24A 280 PSIG-AIR SOLENOID VALVE W/ BASE, I35SS73BK
BAILEY BABCOCK & WILCOX PNEUMATIC FUNCTION GENERATOR FG111
NUMATICS 150PSIG SOLENOID VALVE NNB I35SS43BK000030 101800
VICKERS VANE TYPE HYDRAULIC PUMP 4535V 60A 35
KYOHO56H40026 HCI-XD CYLINDER 40MM BORE 910MM STROKE 40X910-LB
YUKEN HYDRAULIC CYLINDER CJT70-FA 80C 65H-ABD
NUMATICS SOLENOID 225-372B, 24VDC 6.0 WATTS 26AMP, 150PDIG- AIR NNB
NUMATICS 123SS515K 120 VOLTS 50/60 HERTZ 150 PSIG DOUBLE SOLENOID VALVE
STAFSJO KNIFE GATE VALVE W/ PNEUMATIC ACTUATOR AC-160 102573
CAT PUMPS GENUINE PARTS CONNECTION ROD 121467 NIB
NUMATICS 120V .12A 150 PSIG-AIR SOLENOID VALVE W/ BASE, 082SA415K
ENIDINE HYDRAULIC SHOCK ABSORBER MT 206313 NIB
MONITEUR * SENTINEL PNEUMATIC VALVE WITH PARTS * AMYB-5120
FESTO LINEAR CYLINDER DZH-50-100-PPV-?A
SMC 32MM BORE 30MM STROKE 0.7MPA PRECISION CYLINDER, MTS32-W2316-30
BIMBA SS PNEUMATIC CYLINDER 094-NRP
FESTO PNEUMATIC STANDARD CYLINDER DNG-100-25-PPV-?A NNB
SCHROEDER FILTER KW NIB
SMC PRESISION AIR PRESSURE REGULATOR AR20-01B
FESTO DZH-40-PPV-A CYLINDER REPLACEMENT PARTS NIB
WHITEY 200PSI SPRING RETURN W/ VALVE 133 SR
MAC AIR VALVE 56C-52-RA *MANUFACTURER REFURBISHED*
FESTO 63MM BORE 725MM STROKE PNEUMATIC CYLINDER, DGP-63-725-PPV-?A-B
BIMBA BF-091-R SQUARE HEAD PNEUMATIC CYLINDER, NNB
DE-STA-CO 82P35 CLAMP 82P35- 5400000-NPT 105491
VEKTEK RIGHT HAND, 5000 LB CAPACITY SINGLE ACTION SWING CLAMP 15-0118-00 RH
NUMATICS 120V, 50-60HZ, 0.11 AMPS SOLENOID VALVE 153SA43AK
KYOHO MACHINE WORKS HCI-XD HYDRAULIC CYLINDER 50X108-CB / 66H50887
NUMATICS SOLENOID VALVE 24 VDC 6.3 WATTS 225-285B
AEROQUIP 2681-24 SINGLE WIRE BRAID HI-IMPULSE LOW PRESSURE HOSE, NNB
HYDRAULIC THREAD NUT HMV120
SMC CDLABN80-K5242-?XC11 (80+60)
BIMBA 25MM BORE 50MM STROKE PNEUMATIC CYLINDER E-25-50-U
PARKER FLANGE FITTING P11571-20-20 SAE CODE 61 FLANGE STRAIGHT SERIES 71
SMC PNEUMATIC AIR ACTUATOR MGPM63-75-Z73L-?XC35
NUMATICS 124BA415MP00061 24 VDC 150 PSIG PNEUMATIC VALVE
COMPACT PNEUMATIC CYLINDER QJ93-2096
JAMESBURY PNEUMATIC VALVE ACTUATOR ST-1200 W/ POSITIONER 103495
NUMATICS 120V .37A 50/60HZ 150 PSIG-AIR PNEUMATIC SOLENOID VALVE, 555SA43AK
PHD INC. PNEUMATIC SLIDE & CYLINDER, SGB84X450-BB-CB?-L9-PB15, NNB
OHIO OSCILLATOR HYDRAULIC ROTARY ACTUATOR H67-190-AECB-ES?-MS123X-SBHX-N
FESTO PNEUMATIC CYLINDER DKE-40-75-PPV-A
BOSCH * 250BAR HYDRAULIC VALVE * 0 811 403 117
COAX VMK 20 DR NC VALVE NNB
NUMATICS 150PSIG SOLENOID VALVE I34BB500KP00030
BOSCH 4600 PSI SERIES B DIRECTIONAL CONTROL VALVE 9810231276
FESTO GUIDED DRIVE DFM-25-100-P-A-?GF
SMC * GUIDE CYLINDER * MGGMB50-75-C73C?Z
YUKEN * HYDRAULIC CYLINDER * CJT140-FY80B140?B-ACB-EK
NUMATICS 120V, .30A, 50/60Hz, 150PSI PNEUMATIC SOLENOID VALVE 55455414K
NUMATICS 120V .37A 150 PSIG-AIR SOLENOID VALVE, I35SA43BK
WORCESTER/MCCAN?NA MODEL 15 SERIES 39 120 PSI PNEUMATIC ACTUATOR
FESTO 100mm BORE 25mm STROKE PNEUMATIC CYLINDER DNGU-100-25PPV-?A
FESTO STANDARD PNEUMATIC CYLINDER DKE-40-250-PPV-?A NNB
NUMATICS 150PSIG, 120V,60Hz, .06A SOLENOID VALVE 134BA400KP00030
NUMATICS 24VDC 4.0W 150 PSIG-AIR DOUBLE SOLENOID VALVE, I23BB500MP
STANLEY F30L20-30CROWFO?OT TUBENUT ANGLE PNEUMATIC CLUTCH SHUTOFF NUTRUNNER
FESTO 40MM BORE 920MM STROKE PNEUMATIC CYLINDER, DNG-40-920-PPV-?A, NNB
FESTO 63MM BORE 50MM STROKE PNEUMATIC CYLINDER, DKE-63-50-PPV-A?, NNB
SMC CYLINDER CNAFN40-465-D
METSO DUFF NORTON MACHINE SCREW ACTUATOR 9XX / VAL0157502
ENIDINE ITT MF21537 NIB
