IC697PWR710
IC697PWR710
IC697PWR710
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設計這種步進階梯時要注意以下問題：（1）在一個自動工作循環內，移位寄存器的移位數據輸入端IN只允許起動時輸入一個單脈衝信號。也就是說起動時只能輸入移位數據“1”。步進階梯的工作原理就是根據輸入的數據“1”，在移位寄存器中逐步向高位移位來實現逐步得電和逐步失電。所以輸入端IN要串聯每個移位輸出位的常閉觸點；（2）移位寄存器對移位脈衝輸入端開關的抖動非常敏感。若開關抖動一次，相當於多輸入了一個移位脈衝，移位數據“1”隨之多移了一位。由於接點式開關被觸發時難免產生抖動。為這種影響，在移位脈衝輸入端的步1輸入回路，串聯移位寄存器0位（本例為M20）的常閉觸點，一旦移位數據移入M20位，便斷開步1的輸入回路；而從步2開始，每步的輸入回路也要串聯上一位的常開觸點。例如步2的輸入回路要串聯上一位M20的常開觸點。這樣，當移位到步2轉步主令信號對應的M21位時，便立即斷開步2的輸入回路。採用這樣的移位脈衝輸入回路結構，可確保每步的轉步輸入信號持續時間只有PLC的一個掃描周期（一般只有幾Mｓ），因開關的抖動時間遠大於PLC的一個掃描周期。所以可有效地開關抖動的影響。
ALLEN BRADLEY CONTACTOR 700-N600A24
SMC MGPM50TF-50Z
SICK NTA6-N312 REGIS SCANNER NTA6N312 NTA6
SMC MGPM50TF-25Z
SKF BEARING SKF-SAF-22524CA SIZE 4-3/16" NEW
Winzer Female Terminal Pin 12124580 14-16 W/PTERM LOOSE 1000 PC
New Browning T55LX 1 1/8
NEW ABB PRESSURE TRANSMITTER 544TB01341A0110-1000-56412
Martin Sprocket Stainless Steel 40B30SS SS40B30X012K 3/4" 3/4
SIEMENS MILLTRONICS PROBE 7MH71431AA50 1P7MH7143-1AA50 TSP33 Z1003261
12" Long 2" ID Stainless Steel Flexible Coupling 2150 F316 316 SA182 B16.5 SS
Flow components 12" Long 2" ID Stainless Steel Flexible Coupling 304 SA182 B16.5
ABB Drive ACS 500 DISPLAY Readout ACS500 60037663B 9432 362
NEW ROSEMOUNT PRESSURE TRANSMITTER 10140-55 RTD10 PT100
CONTROL CONCEPTS SPEED SWITCH CI-2120-IM/FK
MORSE 8020 FB 2-15/16" BORE 20 TOOTH
ENERTROLS Shock Obsorber, SNALD11/8X4p567 412324, SNALD 1-1/8 x 4 P567
SUPERIOR ELECTRIC SLOSYN SS421G3
ABB ASEA RXMH 2 24V Combiflex Relay RXMH2 RK 223 06
SICK NTA6-N312 REGIS SCANNER NTA6N312 NTA6
Heizelement 7 kW 3x 480V 011.325.016-10 Daetwyler ET1210199
IDEAL 12" Long 2" ID Stainless Steel Flexible Coupling SA182 B16 150 304 SS
GENERAL ELECTRIC CIRCUIT BOARD CARD IC3600SCBD2A 68A989109G1 REV. B
FOXBORO 761CSA-3A-1
INTRALOX SERIES 1100
Athena Controls Temperature Temp Controller 4000-F-E Range: 0-2000F K 120/240vac
CONDOR POWER MTC-253-0515F DC
MARTIN D12B25 2 3/4" BORE 25 TOOTH
ACDC Electronics Emerson 800 watt REV803B-2330-9002
Hoffman 12" Telescope Fitting Galvanized Steel F1212GAGV
CLEVELAND C33187 HSS End Mill, 2 In D, 2 In Cut L Center Cutting 360270
SKF 65037 Oil Seal New Grease Seal CR Seal CR-65037-USA
PACIFIC SCIENTIFIC P22NRXA-LNN-NS-00
ELECTROSWITCH 8847CB-001
HOFFMAN Straight Section Wireway Trough Galvanized 60" F88G60
Edwards Adaptahorn Horn B-N-8590-E5
MARTIN E50B25H 1" BORE 25 TOOTH
MARTIN D12C25 2 3/4" BORE 25 TOOTH
TAYLOR THREADED RELIEF VALVE 82D9241311 5000 PSI 3/4" STEEL 224gpm
FISHER ROSEMOUNT DIAPHRAM SIZE 60 19" OD 3 9 84 RPP 3-9-84-RPP
HONEYWELL 14004214-001
BEARING DISTRIBUTORS GEAR TST1680 TST-1680 5/8"
ACME ELECTRIC CORPORATION 5000VA TRANSFORMER TA-1-81221
Donaldson Air Cleaner Filter G092401
INTRALOX SERIES 1100 FLUSH GRID POLYPROPYLENE BELT 4" x 25' GD-8921-1
MASKA PULLEY 3B11.0 3B110 3B110 (SK) 3B110SK
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