Control cabinet

- Oct 27, 2017 -

Control cabinet

Concepts: mainly to achieve some control functions, generally contain switches, relays or PLC and the like, specifically speaking, according to the electrical wiring requirements of switching equipment, measuring instruments, protective appliances and auxiliary equipment assembled in closed or semi-enclosed metal cabinet or Screen layout, the layout should meet the normal operation of the power system requirements, easy maintenance, does not endanger the safety of personal and surrounding equipment. Normal operation can be switched on or off by means of manual or automatic switching. Malfunction or abnormal operation with the protection of electrical cut off the circuit or alarm. By measuring the instrument can display the various parameters in operation, but also for some electrical parameters to adjust the deviation from the normal working state to prompt or send a signal.

Application: commonly used in the hair, with, substation.

Type: electrical control cabinet, frequency control cabinet, low voltage control cabinet, high pressure control cabinet, pump control cabinet, power control cabinet, explosion control cabinet, elevator control cabinet ,, soft start control cabinet, PLC control cabinet, fire control cabinet, brick machine Control cabinet and so on.


1. Frequency control cabinet

Frequency control cabinet is mainly used to adjust the operating frequency of equipment, reduce energy consumption, can start the device smoothly, reducing the direct start of the device generated by the high current damage to the motor. At the same time comes with analog input (speed control or feedback signal), PID control, pump switching control (for constant voltage), communication function, macro function (for different occasions have different parameters set), multi-speed and so on The

Function: with overload, short circuit, lack of protection and pump leakage, motor overheating and leakage

And a variety of protection functions and complete state display, and with a single pump and multi-pump control mode of operation, a variety of main pump switching and various types of start

Applications: constant pressure water supply, air compressor, fan pumps, central air conditioning, port machinery, machine tools, boilers, paper machinery, food machinery and so on.


2. Pump control cabinet

Function: With open and close the pump function and overload protection, overvoltage protection, overcurrent protection, lack of protection, overheating protection and other functions.

Type: pump control cabinet has many types, on the way to start, there are direct start mode pump control cabinet, soft start mode pump control cabinet, since the lotus step down the way the pump control cabinet, star delta start mode pump control cabinet.


3. Fire control cabinet

Concept: is to control the operation of the fire pump function cabinet, which implements the fire pump automation management, control of the fire pump start, shut down and other operational action. Fire control cabinet is not only the fire pump control equipment, other pumps are also able to control.

Fire control cabinet according to the needs of the implementation can be configured into a one-to-many control mode, that is, a fire control cabinet can control multiple fire pumps, such as a control two fire control cabinet, a control three fire control cabinet, a control of four fire control Cabinet and so on. In this way, the fire control cabinet to achieve a centralized management of the fire pump, greatly reducing the difficulty of control and improve work efficiency.

Fire control cabinet reserved remote port, can be configured for remote control type, you can achieve long-distance control. This is out of the fire pump room complex working environment, making the work of the staff more relaxed, the staff of the security protection has improved.

Function: also has overload protection, overvoltage protection, short circuit protection, lack of protection, overheating protection and other functions, while intelligent sensing fire pump running conditions, fire pump failure to respond in a timely manner.


4. PLC control cabinet

Concept: refers to the programmable control cabinet. An electronic device designed for digital operations designed for use in industrial environments, which uses memory that can be programmed to store instructions that perform operations such as logical operations, sequential operations, timing, counting, and arithmetic operations, And through the digital or analog input and output, control of various types of machinery or production process.

Function: with overload, short circuit, lack of protection and other protection functions.

Features: Can complete the equipment automation and process automation control, stable and reliable performance, scalable, anti-interference ability, powerful, flexible, easy to learn and use, small size, light weight, cheap features.

constitute:

The air switch (a total air switch, this is the power control of the entire cabinet.)

PLC (this should be selected according to the project needs. Project can be directly an integrated PLC, but the project may need more modules, card-type, but also may need to be redundant two sets of alternating use).

Power supply (a 24VDC switching power supply, most of the PLC is equipped with 24VDC power supply, according to whether it is necessary to set whether to switch the power supply.

Relay (the general PLC can be directly sent to the control circuit instructions, but may also be relay relay. For example: If your PLC output port is charged 24VDC, but the control circuit drawing the need for PLC node is 220VAC, it is necessary to add a relay at the PLC output port, that is, when the command is issued, but then the node of the control circuit is connected to the normally open or normally closed point of the relay, and whether the relay is selected according to the situation.

The terminal (this is every cabinet is essential. According to the number of signals can be configured. If only a simple PLC control cabinet is basically the need for these, if the control cabinet also need to have other things to see the situation increased. It is possible to supply power to some of the field instruments or small control box, you have to increase the number of open air.If you want PLC connected to the host computer, you need to increase the switch or something.


Application equipment: constant pressure water supply, air compressor, fan water pump, central air conditioning, port machinery, machine tools, boilers, paper machinery, food machinery, etc.

Application industry: steel, oil, chemical, power, metallurgy, building materials, paper, environmental protection, sewage treatment, machinery manufacturing, automotive, textile, transportation and cultural and entertainment industries.

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