IC693MDL646
IC693MDL646
S7-1200 PLC 電源需求與計算
S7-1200 CPU 提供 5 VDC 和 24 VDC 電源:
當(dāng)有擴(kuò)展模板時,CPU 通過 I/O 總線為其提供 5 VDC 電源,所有擴(kuò)展模塊的 5 VDC 電源消耗之和不能超過該 CPU 提供的電源額定值。若不夠用不能外接 5 VDC 電源。
每個 CPU 都有一個 24 VDC 傳感器電源,它為本機(jī)輸入點和擴(kuò)展模塊輸入點及擴(kuò)展模塊繼電器線圈提供 24 VDC。如果電源要求超出了 CPU 模塊的電源額定值,你可以增加一個外部24 VDC 電源來提供給擴(kuò)展模塊。
所謂電源計算,就是用 CPU 所能提供的電源容量,減去各模塊所需要的電源消耗量。
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