与继电器配合，可对系统和设备进行过电流、过负荷和接地等保护。
Cooperating with relay, it can protect system and equipment from excess current, overload, and earthing etc.
与继电器，这是一个昂贵的前景，因为它是由一个面板上的主要精力重新布线完成。
With relays, this was a costly prospect, as it was accomplished by a major rewiring effort on the panel.
通过对LOGO与继电器控制进行比较，说明采用LOGO控制模块具有优越性和较好的价格比，以及在类似工程中应用前景。
Through the comparison of LOGO and relay control, it's clear that LOGO control module has superiority and better price and application prospect in similar engineering.
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