描述
PLC的供电电源，除了引进设备时同时引进PLC应根据产品说明书要求设计和选用外，一般PLC的供电电源应设计选用220VAC电源，与国内电网电压一致。重要的应用场合，应采用不间断电源或稳压电源供电。
如果PLC本身带有可使用电源时，应核对提供的电流是否满足应用要求，否则应设计外接供电电源。为防止外部高压电源因误操作而引入PLC，对输入和输出信号的隔离是必要的，有时也可采用简单的二极管或熔丝管隔离。
NetApp DS14 MK2 FC w/ 14x X274 a 144GB 10krpm HD +ESH
NetApp DS14 mk2 AT w/ 14x320GB HDD, 2x AT-FC Modules
NetApp C6100 NetCache Proxy Server
We buy your NetApp, EMC, IBM, SUN surplus.
NetApp DS14 MK2 Fiber Storage Shelf 14x 144GB 2TB
We buy your NetApp, EMC, IBM, SUN surplus.
NetApp DS14 MK2 14x 144GB 2TB Fiber Shelf
We buy your NetApp, EMC, IBM, SUN surplus.
NetApp FAS270 Filer No Disk Network Appliance
Disk Available!! 1 Year Warranty! We ship worldwide!!!
NetApp FAS270 Filer No Disk Network Appliance
Disk Available!! 1 Year Warranty! We ship worldwide!!!
NetApp X3541-R5 / Motherboard, No Memory, 3170,R5 / NEW
NetApp FAS940C 2 x FAS940 Filer Heads
