1771-SDN/ABPLC模塊
PLC對模擬量信號的識別是通過PLC的模擬量輸入輸出模塊來完成的。模擬量輸入輸出模塊采用A/D轉(zhuǎn)換原理，輸入端接收來自傳感器或變送器的模擬信號，輸出端輸出的模擬信號作用于PLC的控制對象。PLC診斷模擬量故障的過程，實(shí)質(zhì)就是將在相應(yīng)A/D通道讀到的監(jiān)測信號的模擬量的實(shí)際值與系統(tǒng)允許的極限值相比較的過程。如果比較的結(jié)果是實(shí)際值遠(yuǎn)離極限值，則表明軋鋼生產(chǎn)設(shè)備對應(yīng)的受監(jiān)控部位處于正常狀態(tài)，如果實(shí)際值接近或達(dá)到極限值，則為不正常狀態(tài)。判斷故障發(fā)生與否的極限值根據(jù)實(shí)際系統(tǒng)相應(yīng)的參數(shù)變化范圍確定，利用PLC上的模擬量設(shè)定開關(guān)可精確設(shè)置該極限值。
1771-SDN/ABPLC模塊
1771-OP 120V AC PROTECTED OUTPUT MODULE
1771-OQC ISOLATED DC 24V 8 OUTPUTS IN 2'S,
1771-OQ16 OUTPUT MODULE
1771-OQ16K OUTPUT MODULE
1771-OR OR ISOLATED OUTPUT MOD,6 OUTPUTS, 220V AC
1771-OVN LOW TRUE INPUT MODULE, 32 INPUTS, 10-30V DC
1771-OW CONTACT OUTMOD,8 SELECT CONTACTS,NO/NC
1771-OW16 CONTACT OUTPUT
1771-OW16K CONTACT OUTPUT
1771-OWK CONTACT OUTPUT
1771-OWN CONTACT OUTPUT
1771-OWNA CONTACT OUTPUT
1771-OX OUTPUT MODULE
1771-OXK OUTPUT MODULE
1771-OYL CONTACT OUTPUT
1771-OZL CONTACT OUTPUT
1771-P1 PWR SUPPLY, 6.5A, 120/220VAC
1771-P2 PWR SUPPLY, 6.5A, 120/220V AC
1771-P3 POWER SUPPLY, 5V DC, 3A
1771-P4 POWER SUPPLY, 5V DC, 8A
1771-P5 POWER SUPPLY, SLOT, 8A, 24V DC
1771-P6 POWER SUPPLY, SLOT (ONE SLOT), 8A, 220V AC
1771-P7 POWER SUPPLY, 16A, 120/220V ACR SUPPLY
1771-PM CLUTCH/BRAKE MODULE (USED IN PAIRSH/BRAKE MODULE
1771-PS7 MULTIVOLTAGE RACK PWR SUPPLY, +5V DC BACKPLANE,
+-15V DC, +5V DC, +24V DC ISOLATED,POWER SUPPLY
1771-PSC POWER SUPPLY CHASSIS, 4 SLOTS CHASSIS
1771-QA POS MODULE
1771-QB LINEAR HYDRAULIC POSITIONING MODULEOSITIONING MODULE
1771-QRC DUEL RTE MTR MOD/SOLAR TURBI
1771-RT41 REMOTE PANEL
1771-RT44 REMOTE PANEL
1771-RTP1 REMOTE PANEL
1771-RTP3 REMOTE PANEL
1771-RTP4 REMOTE PANEL
1771-SDN SCANNER MODULE
1771-SN SUB INPUT/OUTPUT SCANNER MODULE
1771-SIM 8PT SIM MODULE%
1771-VHSC SPEED COUNTER
1771-WA FIELD WIRING ARM
1771-WB FIELD WIRING ARM
1771-WC FIELD WIRING ARM
1771-WD FIELD WIRING ARM
1771-WE FIELD WIRING ARM
1771-WF FIELD WIRING ARM
1771-WG FIELD WIRING ARM
1771-WH FIELD WIRING ARM
1771-WHF FIELD WIRING ARM
1771-WHFB FIELD WIRING ARM
1771-WI FIELD WIRING ARM
1771-WN FIELD WIRING ARM
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