描述
对于两个重要输出量，不仅在PLC内部互锁，建议在PLC外部也进行硬件上的互锁，以加强PLC系统运行的安全性、可靠性对于常见的AC220V交流开关类负载，例如交流接触器、电磁阀等，应该通过DC24V微小型中间继电器驱动，避免PLC的DO接点直接驱动，尽管PLC手册标称具有AC220V交流开关类负载驱动能力
Stokes 72″ Diameter Vacuum Metallizer
Nash CL9001 CL9002 vacuum pump
Zyra Research ZRI-XP-1×1 Abatement System Used
Zyra Research ZRI-XP-1×1 Abatement System Used
Nash 904R2 904R1 vacuum pump
Head/Lobe for Nash HP liquid ring compressor, 316 SS
Three Zones Tube Furnace with Vacuum Pump for CVD
Edwards Booster Pump
Nash CL3001 CL3002 stainless vacuum pump
Nelmor 60 Hp Granulator, Bin, Vacuum Pump, Conveyor
1989 Vac Con V290TR Vacuum Jet Rodder Truck, Good cond.
