relay logic control system 继电器逻辑控制系统
This paper proposes a new approach to the design of relay logic control circuits.
提出了一种继电器控制逻辑设计的新方法。
Relay logic control is used in old planer, and its circuitry is complicated, so the malfunction rate is high, and it is difficult to find the malfunction out.
老式龙门刨床的电控部份采用继电器逻辑控制，线路复杂，故障率高，查找故障困难。
The PLC is applicated in the steel tube galvanization process replace of traditional relay logic control to realize the automatic operation and fault treatment.
介绍采用PLC替代传统的继电器逻辑控制对钢管热镀锌的生产实现自动运行及故障处理。
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