PLC control cabinet is a programmable control cabinet, control cabinet refers to the complete set of control cabinet, can realize the motor, switch control of the electrical cabinet, PLC control cabinet has overload, short circuit, phase loss protection and other protection functions.
PLC control cabinet can be combined according to the size of the actual control gauge, both to achieve single cabinet automatic control, but also to achieve multiple cabinets through the industrial Ethernet or industrial field bus network to form a centralized (DCS) control system. PLC control cabinet can adapt to various sizes of industrial automation control occasions. It is widely used in electric power, metallurgy, chemical industry, paper making, environmental protection sewage treatment and other industries.
PLC control cabinet generally includes the following five parts:
1、 Air switch: whitch role in the control of the power circuit in the cabinet.
2、 PLC: according to the needs of the project to choose the appropriate PLC and its modules, card-type, but also may need redundancy (that is, two sets of alternate use).
3、Power supply: a 24VDC switching power supply, most of the PLC are self-contained 24VDC power supply, according to whether it really needs to determine whether the switching power supply.
4、 Relays: PLC is able to send instructions directly to the control loop, but may also be relayed first. Depending on the situation, you can choose whether to use relays.
5、 Wiring terminals: can be configured according to the number of signals.
Main brands : Siemens, Mitsubishi, Omron, Schneider, etc.
Conditions of use: Power supply: DC DC 24V, single-phase AC 220v, (-10%, +15%), 50HZ
Typical applications: constant pressure water supply, air compressor, fan and pump, central air conditioning, port machinery, machine tools, boilers, paper making machinery, food machinery, etc.
The rated current of low-voltage power distribution cabinet is AC 50Hz, rated voltage 380v power distribution system as power, lighting and distribution of electrical energy conversion and control purposes. The product has the characteristics of strong breaking capacity, good dynamic and thermal stability, flexible electrical scheme lead, convenient combination, series, practicality, novel structure, etc.
The basic structure of the cabinet is combined assembly type structure. Bolt fastening connection, 20mm for the modulus installation hole device of a functional room isolated from each other, GCK cabinet's basic feature is the bus bar in the upper part of the cabinet, its compartment is divided into functional unit room (before the cabinet), bus bar room (top of the cabinet), cable room (after the cabinet). Also reliable wall installation, at this time, the right side of the cabinet is widened by 200mm as the cable room, at this time and the top bus bar style of MNS cabinet is similar.
Functional unit:The modulus of drawer layer height is 200mm
GGD type low-voltage distribution cabinet
A) Rated insulation voltage: AC 660v(1000)v
B) Rated working voltage: Main circuit: AC 380v(660V) Auxiliary circuit: AC 380v(220v) DC 220v(110v)
C) Rated frequency: 50Hz
D) Rated current: ≤4000A
E) Rated peak withstand current (0.1s) 105KA
F) Rated short-time withstand current (1s) 50KA
GCK series AC low-voltage power distribution cabinet is classified as a new type of energy-saving product by the state, with advanced structure of control center, beautiful appearance, high electrical performance, high protection level, safety and reliability, convenient maintenance, and is an ideal power distribution device for low-voltage power supply system in metallurgy, petroleum, chemical industry, electrical machinery, light textile and other industries.
b) Rated working voltage: 380V, 660V
c) Operating frequency: 50Hz
d) Rated current: 1600~3150A for horizontal busbar system 400~800A for vertical busbar system
e) Rated short-time withstand current: 80KA RMS/1sec for horizontal busbar 50KA RMS/1sec for vertical busbar
f) Rated peak current: 175KA for horizontal busbar 110KA for vertical busbar
g) Functional unit breaking capacity: 50KA
h) Peripheral protection level: IP40
Control box is an electrical control supporting equipment, the control box (table) has the characteristics of easy to use and maintain, superior performance, safe and reliable use, beautiful appearance and structure, sturdy and durable, easy to move, etc.. Is the power supply enterprises, large factories, metallurgy, power plants, railroads and other industries need the necessary equipment for electrical control.
1、Monitoring function: output current, instrument voltage, zero position indication split/close indication timing indication
2、Protection functions: overcurrent protection, time relay
3、The use of new relays, more accurate, more reliable, to ensure personal and equipment safety
4、Rational structure, small volume, light weight
Ambient temperature: 0--40℃ Altitude:<2000m Relative humidity: <85% The use of the site should not seriously affect the insulation of gas, steam, chemical dust and other explosive and corrosive media.
