PLC是整个系统的神经中枢，所有控制，保护，工作状态指示都通过PLC内部的虚拟继电器通过软连线配合外部给定开关量和信号来完成。控制电压在电压以下，可以提高工作的性，远离高压室进行操作，可以避免工作人员的误操作，一站式控制，可以提高工作效率，减少工作人员的劳动强度。用两条现场总线就可以实现整个系统的信号传输，通过PLC的工作状态和报警指示，便于工作和维修人员的故障排除。另外，与继电器相比，PLC的免维护性高，工作寿命长。
【瑞士ABB.. 机器人 DSQC系列,ABB Advant OCS,ABB Procontic PLC CPU】
NEW SIG 54609906 STEEL ROTATING SHAFT D329151
NEW ALFA LAVAL 7401618-01 STAINLESS PUMP BEARING COVER D413708
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NEW THOMAS CES2716 17MM BORE 13-1/8X2-7/16IN STEEL SHAFT END D383713
NEW TANNER TOOL VV60030 1-3/16IN INPUT STEEL ECCENTRIC SHAFT REPLACEMENT B332872
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SMC SF4-5DZ-80 21-26V-DC SOFT START UP BODY PORT SOLENOID VALVE PART B362519
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NEW KVP 76210M 1-1/2 IN SQUARE BORE 20TOOTH SPROCKET CONVEYOR 1IN PITCH D251333
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SPIRAX SARCO Y2 3/4IN NPT IRON STEAM TRAP HOUSING REPLACEMENT PART B406381
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NEW WAUKESHA 39683 VALVE GASKET REPLACEMENT PART D374180
NEW DODGE RELIANCE 415112 65 MG DISC BUSHING KIT REPLACEMENT PART D399504
NEW NUMATICS 237-221B 115-120,100-115?V-AC COIL SOLENOID VALVE D429786
NEW NUMATICS MK7-K3 REPAIR KIT SOLENOID VALVE REPLACEMENT PART B490876
NEW METSO RKQ-3 IMO-32 DIAPHRAGM 12 IN DIA ACTUATOR REPLACEMENT PART D456888
NEW AEROQUIP TTC-16 JIC ELBOW SWIVEL CRIMP HOSE 3/4 IN HYDRAULIC FITTING B446349
NEW 343300 GHVB VACUUM BREAKER PLUNGER REPLACEMENT PART D390295
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NEW ALVEY ROLLER CONVEYOR REPLACEMENT PART 48X66X102MM D328907
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