ABB PU515A 模块 控制器

ABB PU515A 模块 控制器

ABB PU515A 模块 控制器

ABB PU515A 模块 控制器特点：安全性高 安全度高、高精度，安全 耐用与PLC控制器控制系统连接的各类信号传输线，除了传输有效的各类信息之外，总会有外部干扰信号侵入。

此干扰主要有两种途径:一是通过变送器供电电源或共用信号仪表的供电电源串入的电网干扰，这往往被忽视;

二是信号线受空间电磁辐射感应的干扰，即信号线上的外部感应干扰，这是很严重的。由信号引入干扰会引起I/O信号工作异常和测量精度大大降低，严重时将引起元器件损伤。

对于隔离性能差的系统，还将导致信号间互相干扰，引起共地系统总线回流，造成逻辑数据变化、误动和死机。PLC控制器控制系统因信号引入干扰造成I/O模件损坏数相当严重，由此引起系统故障的情况也很多。

ABB PU515A 模块 控制器

ABB PU515A module controller features: high safety High safety, high precision, safe and durable all kinds of signal transmission lines connected with the PLC controller control system, in addition to the transmission of effective all kinds of information, there will always be external interference signal intrusion.

There are two main ways of this interference: one is through the transmitter power supply or the power supply of the shared signal instrument into the grid interference, which is often ignored;

Second, the signal line is interfered by electromagnetic radiation induction in space, that is, the external induction interference on the signal line, which is very serious. The interference introduced by the signal will cause the abnormal work of the I/O signal and the measurement accuracy will be greatly reduced, and the components will be damaged in serious cases.

For the system with poor isolation performance, the signals will interfere with each other, causing the bus backflow of the common ground system, resulting in logical data changes, misoperation and crash. PLC controller control system due to signal interference caused by I/O module damage is quite serious, resulting in a lot of system failures.