2020/07/03
What is a plc control cabinet and what are the main components of a plc control cabinet
The PLC integrated control cabinet has protection functions such as overload, short circuit and phase loss protection. It can realize automatic control of a single cabinet, or multiple cabinets to form a distributed (DSC) control system through an industrial Ethernet or industrial field bus network, and a PLC control cabinet It can adapt to various large and small industrial automation control occasions. This article focuses on what the PLC control cabinet means, and what are the main components of the PLC control cabinet.
plc control cabinet
The abbreviation of PLC control cabinet programmable logic controller (PLC), the Chinese name is called Programmable Logic Controller. The plc control cabinet is a digital arithmetic controller designed for industrial environment applications. It uses programmable memory to store operating instructions such as logic operations, sequence control, timing, counting and arithmetic operations, and control various types of mechanical equipment or production processes through the input and output of digital signals or analog signals.
What are the main components of the plc control cabinet
Air switch: The total air switch is the power control of the entire cabinet, usually every cabinet must have.
PLC: This should be selected according to project needs. For example, if the project is small, it can be directly an integrated PLC, but if the project is relatively large, it may require modules and cards, and may also need redundancy (that is, two sets of alternate use).
24VDC power supply: a 24VDC switching power supply, most PLC control cabinets are built-in 24VDC power supply, according to whether or not to decide whether to switch power supply.
Relay: Generally, PLC can send instructions directly to the control loop, but in some cases it is also relayed by the relay first. For example, if the output port of your PLC is powered by 24VDC, but the drawing in the control loop requires the node supplied by the PLC to be 220VAC, then you have to add a relay to the PLC output port, and then connect the node of the control loop to the relay On the normally open or normally closed point.
Terminal: This is definitely an indispensable thing for every cabinet and can be configured according to the number of signals. If it is just a pure PLC control cabinet, these things are basically needed. If there are other things in the control cabinet, it depends on the situation. For example, it is possible to supply power to some on-site instruments or small control boxes. Maybe you have to increase the number of MCBs or you want to connect the PLC to the upper computer, and you may need to increase the switch.
Regarding the question of the plc control cabinet, this article focuses on what is meant by the plc control cabinet and what are the main components of the plc control cabinet. It can be seen that the plc control cabinet has a very wide range of uses, especially in the industry is used more, this is mainly because the plc control cabinet has powerful and practical functions.
