PRODUCT DESCRIPTION
Overview
PLC control cabinet refers to a programmable control cabinet, and control cabinet refers to a complete set of control cabinets, which can realize the control of motors and switches. PLC control cabinet has protection functions such as overload, short circuit, and phase loss protection.
Introduction
PLC integrated control cabinet has protection functions such as overload, short circuit, and phase loss protection. It has a compact structure, stable operation, and complete functions. It can be combined according to the actual control scale, which can not only realize single cabinet automatic control, but also realize multiple cabinets through industrial Ethernet or industrial field bus network to form a distributed control system (DCS). PLC control cabinet can adapt to various industrial automation control occasions of various sizes. It is widely used in power, metallurgy, chemical industry, papermaking, environmental protection and sewage treatment industries.
Function
PLC control cabinet can complete equipment automation and process automation control, realize perfect network functions, stable performance, scalability, strong anti-interference and other characteristics, and 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 human-machine interface touch screens to achieve the purpose of easy operation. The equipment can also transmit data with the DCS bus host computer modbus, profibus and other communication protocols; control and monitoring can be achieved by industrial computers, Ethernet, etc.
Structure
PLC control cabinets generally include the following five parts:
1. Air switch
A general air switch, which is the power control of the entire cabinet. I believe that every cabinet must have something.
2. PLC
This should be selected according to the needs of the project. For example, if the project is small, it can be directly an integrated PLC, but if the project is relatively large, it may require a module or card type, and redundancy may also be required (that is, two sets are used alternately).
3. Power supply
A 24VDC switching power supply, most PLCs have their own 24VDC power supply, and whether this switching power supply is needed depends on whether it is really needed.
4. Relay
Generally, PLC can directly send instructions to the control loop, but it may also be transferred by a relay first. For example, if the output port of your PLC is powered by 24VDC, but the node that needs to be powered by PLC in the diagram of your control loop is 220VAC, then you must add a relay to the output port of the PLC, that is, the relay will work when the command is issued, but then let the node of the control loop be connected to the normally open or normally closed point of the relay. It is also based on the situation to choose whether to use the relay.
5. Terminal block
This is definitely an indispensable thing for every cabinet. It can be configured according to the number of signals. If it is just a simple PLC control cabinet, these things are basically needed. If you need other things in your control cabinet, you can increase it according to the situation. For example, you may need to power some on-site instruments or small control boxes, so you may have to increase the number of air switches. Or if you want the PLC to be connected to the host computer, you may need to add a switch or something. It depends on the situation
Typical applications of PLC control cabinet
Constant pressure water supply, air compressor, fan pump, central air conditioning, port machinery, machine tools, boilers, papermaking machinery, food machinery, etc.
Design and customize various automation control and PLC control automation systems such as PLC control cabinets, high and low voltage switch cabinets, frequency converter control cabinets, AC and DC distribution cabinets, pump station automatic control systems, reactor automation control systems, wastewater and gas treatment systems, Gate LCU control system and other series ofautomation systems.
Undertake industrial control system and thermal instrument integration, programming and debugging, construction and post-maintenance, providing users with one-stop overall solutions.
It is widely used in electric power, metallurgy, chemical industry, papermaking, environmental protection sewage treatment and other industries.
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