2711P-B10C10D6【】2711P-B10C10D6
2711P-B10C10D6外部聯(lián)鎖電路的設(shè)計(jì)在梯形圖中設(shè)置對(duì)應(yīng)的輸出繼電器的線圈串聯(lián)的常閉觸點(diǎn)組成的軟件互鎖外，還應(yīng)在plc外部設(shè)置硬件互鎖電路。
8、熱繼電器過(guò)載信號(hào)的處理
1）自動(dòng)復(fù)位型熱繼電器，其觸點(diǎn)提供的過(guò)載信號(hào)必須通過(guò)輸入電路提供給PLC，用梯形圖實(shí)現(xiàn)過(guò)載保護(hù)；
2）手動(dòng)復(fù)位型熱繼電器，其常閉觸點(diǎn)可以在PLC的輸出電路中與控制電機(jī)的交流接觸器的線圈串聯(lián)。
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使用安全PLC/DCS 及安全網(wǎng)絡(luò)的優(yōu)點(diǎn)包括:
1 機(jī)械控制更大的集成性和靈活性
2 當(dāng)標(biāo)準(zhǔn)控制層智能化時(shí)，能夠進(jìn)行更好更容易的故障診斷
3 更快、更方便的維護(hù)
4 減少安裝、調(diào)試以及重新配置的費(fèi)用
5 與對(duì)于邏輯單獨(dú)使用安全繼電器相比，降低了設(shè)計(jì)和硬件成本
9、盡量減少PLC的輸入信號(hào)和輸出信號(hào)
10、注意PLC輸出模塊的驅(qū)動(dòng)能力能否滿(mǎn)足外部負(fù)載的要求。
PLC一般只能驅(qū)動(dòng)額定電壓在AC220V以下的負(fù)載，如果系統(tǒng)原來(lái)的交流接觸器的線圈電壓為380V的，應(yīng)將線圈換成220V的，或者在PLC外部設(shè)置中間繼電器。NL772H REMOTE I/O UNIT WestingHouse
NLB50 WestingHouse
NLC185 CABLE WestingHouse
NLC505 CABLE WestingHouse
NLDP708 DISTRIBUTION PANEL - 8 SECTION WestingHouse
NLDP716 DISTRIBUTION PANEL - 16 SECTIONS WestingHouse
NLE1070 REMOTE POWER SUPPLY WestingHouse
NLE770 PC700 I/O EXPANDABLE POWER SUPPLY NUMALOGIC WestingHouse
NLIM50 WestingHouse
NLIM515 INTERFACE MODULE IN/OUT WestingHouse
NLIM516 SIMATIC S5 IM 316 INTERFACE MODULE WestingHouse
NLLA185 ADAPTER WestingHouse
NLM1060 OUTPUT MODULE WestingHouse
NLM700B06 MEMORY BOARD WestingHouse
NLMS1100 WestingHouse
NLMS1100A MEMORY MODULE WestingHouse
NLMS1100B WestingHouse
NLMS1100C MEMORY MODULE 3.5 K MEMORY WestingHouse
NLOP593B OPERATOR PANEL WestingHouse
NLOP593C WestingHouse
NLOP593F MOUNTING
NLPA701 CPU CARD WestingHouse
NLPB702 I/O IMAGE BOARD WestingHouse
NLPB703 I/O LOADER INTERFACE WestingHouse
NLPL180 PROGRAM LOADER WestingHouse
NLPL2605 WestingHouse
NLPL780 CRT PROGRAMMER / LOADER WestingHouse
NLPL789 PROGRAMMER WestingHouse
NLPL7891020 PROGRAMMER MINILOADER WestingHouse
NLPS2703 115/230VAC POWER SUPPLY 3amp WestingHouse
NLPS530 WestingHouse
NLPS531 POWER SUPPLY WestingHouse
NLPX701 CPU CARD WestingHouse
NLR1004 I/O RACK WestingHouse
NLR1008 8 POSITION RACK PC1100/1200 WestingHouse
NLR500 SIMATIC S5 BUS UNIT F. S5100U/ET 100U WestingHouse
NLR704 I/O RACK WestingHouse
NLR714 PLC COMPONENT WestingHouse
NLRE1009 MODULE EXPANSION RACK WestingHouse
NLRE1011 9 MODULE EXPANSION RACK WestingHouse
NLRE1011B 9 MODULE EXPANSION RACK WestingHouse
NLRE1070 WestingHouse
NLRH708T WestingHouse
NLSI799 INTERFACE ASSY SIMM CONTROLLER NUMALOGIC WestingHouse
NLT304 LOGIC PROBE MODULE WestingHouse
NLT715 PLC COMPONENT WestingHouse
NLTS1590 TRANSFER SWITCH WestingHouse
None Termination Box WestingHouse
PC100102 PROGRAMMER CONTROLLER WestingHouse
PC1100 PLC WestingHouse
PC11001011 PC BOARD 120/240V 2K MEMORY WestingHouse
PC11001012 LOGIC MODULE 120/240V 2K MEMORY WestingHouse
PC11001022 NUMA-LOGIC 24VDC 2K MEMORY WestingHouse
PC11001023 PLC WestingHouse
PC11001024 WestingHouse
PC11001033 PC BOARD 120/240V 4K MEMORY WestingHouse
PC11001052 PROCESSOR MODULE WestingHouse
PC1200 WestingHouse
PC12001020 PROCESSOR MODULE WestingHouse
PC12001041 PROCESSOR MODULE 4K MEMORY WestingHouse
PC12001043 PLC PROCESSOR MODULE 16K MEMORY WestingHouse
PC12501042 PLC PROCESSOR MODULE 8K MEMORY 120V 128 I/O WestingHouse
PC12501043 PLC WestingHouse
PC502 WestingHouse
PC503 CPU MODULE WestingHouse
PC700 CONTROL WestingHouse
PC700B PLC PC 700 WestingHouse
PC700B20304806 WestingHouse
PC900B WestingHouse
QC1020 20 AMP BREAKER 1 POLE 120/240V WestingHouse
QNBL2020 CIRC BREAKER WestingHouse
RBARDB200 POWER FUSE REFIL 15500 V 125E AMPS WestingHouse
Style589C377G01 Westinghouse 3 Phase Powertree Power Amp WestingHouse
T507104064AQ WestingHouse
VFSXN4022UP WestingHouse
VME10002083 WestingHouse
VT130G2U4080 WestingHouse
W200M1CFC WestingHouse
W200M1CNC WestingHouse
W200M2CFC WestingHouse
W200M2CNC WestingHouse
W200M3CFC WestingHouse
W200M4CFC WestingHouse
W200M4CNC WestingHouse
W200M5CFC WestingHouse
W200M5CNC WestingHouse
W200M6CFC WestingHouse
W200M6CNC WestingHouse
W200MLCFC WestingHouse
W200MLCNC WestingHouse
W201K1CF WestingHouse
W201K1CN WestingHouse
W201K2CF WestingHouse
W201K2CN WestingHouse
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