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随着工业自动化水平的不断提高,DCS、ITCC、PLC等自动控制系统的容量也相对增加。联锁、报警装置在自动控制系统中的应用确保了整个系统的安全稳定运行,而由于电磁干扰对系统的模拟量信号的影响,往往会引起系统由于联锁系统装置的启动而误跳车,因此控制电缆屏蔽层能否正确的接地对系统的稳定运行至关重要。
With the continuous improvement of the level of industrial automation, DCS, ITCC, PLC and other automatic control system capacity also increased. The application of interlock and alarm device in the automatic control system ensures the safe and steady operation of the whole system. However, the influence of the electromagnetic interference on the analog signals of the system often causes the system to jump into the wrong place due to the start of the interlocking system device, Therefore, the correct control of the cable shield grounding system for the stable operation is crucial.