描述
一、輸入回路的設(shè)計
1、電源回路PLC供電電源一般為AC85—240V(也有DC24V),適應(yīng)電源范圍較寬,但為了抗干擾,應(yīng)加裝電源凈化元件(如電源濾波器、1:1隔離變壓器等)。
2、PLC上DC24V電源的使用各公司PLC產(chǎn)品上一般都有DC24V電源,但該電源容量小,為幾十毫安至幾百毫安,用其帶負(fù)載時要注意容量,同時作好防短路措施(因為該電源的過載或短路都將影響PLC的運(yùn)行)。
3、外部DC24V電源若輸入回路有DC24V供電的接近開關(guān)、光電開關(guān)等,而PLC上DC24V電源容量不夠時,要從外部提供DC24V電源;但該電源的“—”端不要與PLC的DC24V的“—”端以及“COM”端相連,否則會影響PLC的運(yùn)行。
4、輸入的靈敏度各廠家對PLC的輸人端電壓和電流都有規(guī)定,如日本三菱公司F7n系列PLC的輸入值為:DC24V、7mA,啟動電流為4.5mA,關(guān)斷電流小于1.5mA,因此,當(dāng)輸入回路串有二極管或電阻(不能完全啟動),或者有并聯(lián)電阻或有漏電流時(不能完全切斷),就會有誤動作,靈敏度下降,對此應(yīng)采取措施。另一方面,當(dāng)輸入器件的輸入電流大于PLC的最大輸入電流時,也會引起誤動作,應(yīng)采用弱電流的輸入器件,并且選用輸人為共漏型輸入的PLC,Bp輸入元件的公共點(diǎn)電位相對為負(fù),電流是流出PLC的輸入端。
二、輸出回路的設(shè)計
1、各種輸出方式之間的比較
歐美品牌停產(chǎn)的,常用的“PLC”備品備件
我司產(chǎn)品應(yīng)用于以下領(lǐng)域:
1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》
2,《智能平鋼化爐系統(tǒng)制造》
3,《PLC可編程輸送控制系統(tǒng)》
4,《DCS集散控制系統(tǒng)》
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5,《智能型消防供水控制系統(tǒng)》
6,《化工廠藥液恒流量計算機(jī)控制系統(tǒng)》
7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動化控制系列
本特利,英維思,伍德沃德,福克斯波羅、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂,ACSO,力士樂等各大品牌的DCS系統(tǒng)配件,機(jī)器人系統(tǒng)配件,大型伺服系統(tǒng)備件。
AE Advanced Energy MDX-20K Master,AE Model 3152223-003
Advanced Energy RFG-3000
A64697 Advanced
Advanced Energy PDW 600,AE 3156014 Lam#853-15516-003
AE Advanced Energy Navigator RF Match AMAT 0190-16177
63 Thermogenic HYDROXYCUT Advanced LEMONADE Energy 7/11
Hydroxycut Advanced 0 Sugar Lose Wight Increase Energy
AE Advanced Energy HFV 8000 RF Generator 3155083-109
US Advanced WATT Power Energy Voltage Meter Monitor NEW
RFPP Advanced Energy LF-5 RF Generator/Power Supply
AE Advanced Energy MDX-10K Master,AE Model 3152012-041
Adtec Advanced Energy Plasma RF Generator AX-3000 III
Advanced Energy MDX-L6-ONE-YEAR Warranty
Advanced Energy MDX II Calibration Box 2285000A
42 Thermogenic HYDROXYCUT Advanced LEMONADE Energy 7/11
AE Advanced Energy Navigator RF Match AMAT 0190-15167
Advanced Energy MDX-10K Slave,AE Model 3152012-043 X
Advanced Energy RFX-600 RF
A64698 Advanced Energy PEP-2500
AE Advanced Energy MDX CSE-3 Cathode Switch 3152199-000
ADVANCED ENERGY SPARC-LE 20 DC PULSING ARC 3152244
Advanced Energy RF 10/25 Rev.6.0 5708566-A
Advanced Energy Navigator RF Match Novellus 3155126-008
Advanced Energy RFX 1250 RF Generator 3155012-000-K AE
AE ADVANCED ENERGY Model MDX-10K SLAVE
Advanced energy 2279-002-A
RFPP Advanced Energy LF-5 RF Power Supply:50-460 kHz
Ansmann Energy 8 Advanced Charger for AA,AA,C,D,9V
Advanced energy 2026-000-D,ASM LDM PLASMA Generator
AE Advanced Energy RFXII 3K RF Generator 3155047-000D
Advanced Energy(AE)3152194-008X Slave Generator
ADVANCED ENERGY 2011-014-01 RF POWER SUPPLY
ADVANCED ENERGY PDX 500 RF GENERATOR
Advanced Energy AE LM-1.25K
Advanced PDX 500 PDX500
Advanced Energy(AE)2194-008-S Slave Generator
ADVANCED ENERGY SYS GC1000 DC BREAKER W/GFI BREAKER
Advanced Energy HFV-8000 8kW RF Generator Refurb.AE
AE Advanced Energy ATN 1000 RF Match Network Wide Range
Advanced Energy MDX-L18M-ONE-YEAR Warranty
Advanced Energy PDX 900-2V RF Generator 3156024 AMAT
AE Advanced Energy Ovation 35162 User Manual 5709501-B
Advanced Energy AE Multifunction RF Match 3156035-100A
RFPP RF20H WATERCOOLED RF GENERATOR ADVANCED ENERGY
AE Advanced Energy Half-Rack Gen.Manual 500 to 5.5kW
ADVANCED ENERGY AE INDUCTIVELY COUPLED PLAMA SOURCE ICP
ADVANCED ENERGY AE-4855015 USPP AE4855015
Advanced Energy RFG 1250 RF Generator#3155027-000
AE Advanced Energy RFX 2500 RF Generator 3155011-000
Advanced Kinetics LPED Laser Power Energy Detector
Advanced Energy PDW 2200 RF Generator 3156011-000B
Ansmann Energy 16 Advanced Charger for AA AAA C D 9V
Advanced Energy RFG 3000 RF Generator#5038-000-D
AE Advanced Energy RFDS 2K-2V Gen.Manual 5705060-B
Advanced Energy MDX-L Display Monitor PN:3152334-000
ADVANCED ENERGY 3157512006C USPP 3157512006C
Advanced Ballast Mark III Energy Saver V-2S40-1-TP NIB
Advanced Energy Sparc-le 20 DC Pulsing Arc System(MDX)
Advanced Energy PDX-900-2V-ONE-YEAR Warranty
ADVANCED ENERGY FC-985CT-BF-50S?CCM-1.3-C4F6-0.?210 NSPP
Advanced Energy PDX 500 RF Plasma Generator NEW(AE)
Advanced Energy PDX 900-2V RF
Advanced 3156023-000D
RFPP Advanced Energy Harmonic Filter 1 kW 350kHz AE
Advanced Energy Verteq Megasonic Amplifier 3156023-000D
ADVANCED ENERGY-3155168-001-SOURCE,RF MATCH
ADVANCED ENERGY FC-980B-TC-N2-1?000-SCCM USPP FC980BTCN2
Advanced Energy RF30S P/N#3150017-012D
ADVANCED ENERGY 2194-0013-R POWER-SPLY,DC,10KW MASTER
ADVANCED ENERGY 2194-0013-Q POWER-SPLY,DC,10KW MASTER
ADVANCED ENERGY 3152194-008 POWER-SPLY,DC
Advanced Energy 1302170C 8912 Power Distribution Board
AE ADVANCED ENERGY PE-10/20K AC POWER SOURCE
AE Advanced Energy MDX 1.5K Power Supply
Advanced Energy PE Power Pack 3157512-006C
AE ADVANCED ENERGY E’WAVE GENERATOR 3152603-006
AE Advanced Energy MDX-5K
Advanced energy RFG 1250 PN 660-024637-008 3155027-008
AE Advanced Energy Low Pass Filter 1kW 3150202-000E
Advanced B12
Advanced Energy RFX-600 RF