Westinghouse 1C31227G01

  整個(gè)設(shè)施保護(hù)系統(tǒng)的工作過程是：PLC處理器通過遠(yuǎn)程I/O對(duì)生產(chǎn)設(shè)備的壓力、溫度、流量、轉(zhuǎn)速等狀態(tài)進(jìn)行判斷。一旦檢測(cè)到非正常工作情況，則立即將生產(chǎn)設(shè)備進(jìn)行全部或局部關(guān)停，同時(shí)通過人機(jī)界面向操作員報(bào)警。

    除了由傳感器檢測(cè)到的非正常生產(chǎn)狀態(tài)可產(chǎn)生關(guān)停止指令以外，設(shè)施保護(hù)系統(tǒng)同時(shí)提供了手動(dòng)按鈕用以產(chǎn)生手動(dòng)關(guān)停止指令。手動(dòng)按鈕散布在生產(chǎn)區(qū)各處，由操作人員根據(jù)具體事故情況決定是否發(fā)出關(guān)停指令。

    設(shè)施保護(hù)系統(tǒng)還提供了旁通（Bypass）功能。當(dāng)維修人員對(duì)傳感器進(jìn)行檢測(cè)或維修時(shí)，為了防止設(shè)施保護(hù)系統(tǒng)產(chǎn)生誤動(dòng)作，需要在梯形圖程序中設(shè)置旁通位，以便將被維護(hù)儀表產(chǎn)生的誤關(guān)停信號(hào)進(jìn)暫時(shí)屏蔽處理。

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CUTLER-HAMMER 20-250VAC 3-PIN INDUCTIVE PROXIMITY SENSOR E57LAL12A2EA *NEW*

TURCK 10-65VDC 200Ma PROXIMITY SWITCH, BI1.8-WRS-AP4X2

LEUZE ELECTRONIC RK78/4R-800 NIB

TURCK PROXIMITY SENSOR BI5-G18-AP6X-81?341 NIB

IFM EFFECTOR 10-55VDC 4-PIN PHOTOELECTRIC SENSOR 0S5016 0SR-FPKG

BANNER MINI-BEAM 24-240VAC FIBER OPTIC SENSOR SM2A312FQD *NEW IN BOX*

BAUMER ELECTRIC PROXIMITY SENSOR IFRM 06P1501/S35L NNB

PROPORTION-AIR CB1FIE070 TRANSDUCER, NIB

SENSOTEC 5.0 VDC 1.8 MV/V 5000LB RANGE 4-PIN LOAD CELL, 13/8747-01 *NEW*

HONEYWELL MICRO SWITCH 4 PIN PROXIMITY SWITCH 922AA1HI-R4P-L *NEW*

PEPPERL+FUCHS PROXIMITY SWITCH NBB2-12GM60-A2-?V1

BALLUFF MICROPULSE LINEAR TRANSDUCER BT25-E10-M0610 MO610 P-S32/US

IFM EFECTOR 18-36VDC 250MA 1/4" NPT PRESSURE SENSOR PN-2.5-RBN14-QF?RKG/US/ NIB

TURCK 20-250VAC/DC PROXIMITY SWITCH Bi2-CRS260-ADZ3?0X2-B1131/S34

PEPPERL + FUCHS 10-30VDC INDUCTIVE SENSOR NBN15-30GM50-E0 *NEW*

CTC 94.89mV/g TEMPERATURE SENSOR TA102-1A

SICK OPTIC C4K5-1203CCXX0B / 7028781 KIT, NIB

TURCK UPROX 10...30VDC PROXIMITY SENSOR BiIOU-M30-AP6X-?H1141 *NEW*

PMC 24VDC 4-20mA ELECTRONIC PRESSURE TRANSMITTER V-HC / MINI-EL 5257M

BANNER WORLD BEAM QS30 HIGH POWERED OPPOSED MODE SENSOR QS30EXQ *NEW*

EMECANIQUE 12-24V 4 PIN PHOTOELECTRIC SENSOR XU2-P18KL9AB-T

MAGNETROL ECHO OEM 910 ULTRASONIC CONTACT LEVEL SWITCH 910-A1C2-008