ABB 连接单元 PFSK109 PLC控制板

ABB 连接单元 PFSK109 PLC控制板

ABB 连接单元 PFSK109 PLC控制板

继电器:一般PLC是可以直接将指令发到控制回路里，但也可能先由继电器中转。

打个比方，如果你PLC的输出口带电是24VDC的，但是你的控制回路里画的图需要PLC供的节点却是220VAC的，那么你就在PLC输出口加上一个继电器，即指令发出时继电器动作，但后让控制回路的节点接到继电器的常开或常闭点上。也是根据情况选择是否使用继电器。

PLC控制柜可完成设备自动化和过程自动化控制，实现的网络功能，性能稳定、可扩展、抗干扰强等特点，是现代工业的核心和灵魂。可以根据用户需求量身设计PLC控制柜、变频柜等，满足用户要求，并可搭配人机界面触摸屏，达到轻松操作的目的。

设备更可与DCS总线上位机modbus、profibus等通讯协议的数据传输;工控机、以太网等实现的控制和监控。

Relay: Generally, PLC can send instructions directly to the control loop, but it may also be transferred by the relay first.

For example, if your PLC's output is charged 24VDC, but the diagram drawn in your control loop requires the PLC to supply the node is 220VAC, then you add a relay to the PLC output outlet, that is, the relay operates when the command is issued, but then let the node of the control loop connect to the normally open or normally closed point of the relay. The use of relays is also selected according to the situation.

PLC control cabinet can complete equipment automation and process automation control, achieve network functions, stable performance, scalability, strong anti-interference and other characteristics, is the core and soul of modern industry. PLC control cabinets, frequency conversion cabinets, etc. can be tailored according to user needs to meet user requirements, and can be matched with man-machine interface touch screen to achieve easy operation.

The device can transmit data with DCS bus host computer modbus, profibus and other communication protocols. Control and monitoring of industrial computer, Ethernet, etc.