Comprehensive analysis of Industrial panel cabinet

A PLC control cabinet is a system integration device with a programmable logic controller (PLC) as the control core, usually including the PLC body, input/output modules, operation panel, alarm lights, control buttons, and other control components. These components can be customized according to actual application environments and operational requirements to achieve control, monitoring, and operation of on-site automation control systems. The Control panel enclosure has the characteristics of stable performance, high reliability, easy installation, and user-friendly operation. It can complete basic operations without the need for highly specialized technical personnel and is an indispensable core component in industrial automation control.

In terms of usage, PLC cabinet components are widely used in factory production line control, robot control, workshop automation, mechanical automation and other scenarios. They can achieve various functions such as automatic switching, detection, monitoring, and control, and have significant advantages such as compact structure, complete functions, strong anti-interference ability, and reliable operation.

The technical parameters of Industrial panel cabinet mainly include PLC controller parameters, module parameters, connector parameters, console parameters, alarm light parameters, button parameters, and control parameters. These parameters need to be determined according to the actual application environment to meet different working conditions. In terms of cabinet type selection, fixed cabinets are usually used for loading PLCs, and the door panel is a whole door structure, such as KB cabinets, nine fold cabinets, and sixteen fold cabinets. GGD cabinets, fixed partition cabinets, or drawer cabinets should not be selected.

The reason is that the components inside the PLC cabinet are mostly installed as a whole board, and if a cabinet door segmentation structure is used, it will be inconvenient for installation and debugging. If GGD cabinet must be selected, non-standard design should be carried out by merging the instrument door, front door, and lower ventilation door into a whole door, and removing the front and rear crossbeams on the cabinet frame for easy installation and maintenance. In terms of the design of the Application cabinet ventilation system, it is recommended to adopt the form of front door lower air inlet and upper air outlet, and the rear door does not have air inlet and outlet holes. Ventilation filters are installed at the inlet and outlet respectively for dust prevention, with an inlet and outlet area of approximately 0.08 square meters.

Given that the components inside the PLC cabinet generate relatively little heat, natural convection can be used to meet the heat dissipation requirements; If air flow needs to be accelerated, an axial flow fan can be installed on the outlet filter in the upper half of the door panel to exhaust air outward, and the cabinet top cover adopts a non porous structure.

Components that are not frequently operated, such as DC power supplies, can be installed at a height of about 2000 millimeters. The installation position of the bottom component should not be lower than 200 millimeters above the ground, otherwise it cannot be wired on site.

Specifically for various components: The voltage regulator is a heating element that does not require frequent maintenance and should be placed at the top of the PLC panel control logic program stainless steel automatic cabinet for easy heat dissipation; The PLC module needs to be regularly debugged and maintained, and should be installed in a location that is easy to operate.

When installing, it should be arranged from left to right for expansion, and should maintain a distance of at least 100 millimeters from interference sources such as electromagnetic contactors and relays; The installation height of the circuit breaker should be based on the convenience of operation, and there should be no devices around that hinder operation. It should be arranged from the left side for expansion.

Relays and terminal blocks are generally arranged in the front and lower part of the cabinet or behind the cabinet. The terminal blocks should be arranged vertically, and the internal wires and external wire slots should be separated as much as possible.

The external wire slots should consider factors such as spare cores and shielding layers in the incoming wires on site, and larger specifications should be selected; Switches and fiber optic boxes are generally arranged below the Electrical system cabinet, and the reserved wiring space needs to fully consider the bending radius of the network cables and fibers. Lighting fixtures should be installed on the top of the cabinet, controlled by door control switches. One set should be installed on a single-sided layout, and two sets should be installed on both sides.

The grounding system design of PLC panel cabinet is crucial. All control cabinets equipped with PLC devices should be equipped with PE protective grounding busbar and TE anti-interference grounding busbar. The PE protective grounding busbar is used to connect the PE grounding point of equipment such as racks and power supplies, and is directly connected to the cabinet; The TE anti-interference grounding busbar is insulated and installed with the cabinet, used for shielding grounding of external signal cables. In terms of cabinet grounding, the structural components such as the installation board for installing components should be reliably fixed to the cabinet frame. The connectors used should be padded with claw type spring washers and led from the bottom of the installation board to the PE row with yellow and green wires.

The grounding of the rotating components of the Standard PLC cabinet should be connected to the cabinet frame using copper braided tape. There is a dedicated grounding bolt on the rack for connecting PE, and the rack needs to be connected to the PE busbar. The minimum cross-sectional area of the connecting wire is 2 square millimeters. In terms of structural design, based on the above layout principles, draw a cabinet layout diagram in combination with the schematic diagram and cabinet list. Whether it is cabinets, components, or cable trays and other auxiliary materials, the maximum external dimensions must be used and drawn in a 1:1 ratio.

After the layout is completed, the installation board structure is designed based on the location and installation method of the components. The material of the installation board is usually aluminum zinc coated plate, with a thickness between 2.0 millimeters and 3.0 millimeters. The design of an electrical Modular PLC cabinet must be closely integrated with actual usage requirements and strictly standardized in technical operations. This is of great significance for achieving electrical automatic control and improving the manufacturing and design level of control cabinets.

The above is a comprehensive analysis of Industrial panel cabinets, covering key technical points such as structural design, component layout, and grounding system. If you have any questions or specific needs during the product selection or customization process, please feel free to contact us at any time. We will provide you with professional technical support and customized solutions.