Detailed Supply Information — Switching Cabinets

The switching cabinets form the central hub for the control and power distribution systems within the automated steel coil packing line. All electrical components are securely mounted on galvanized steel mounting plates housed within enclosed steel cabinets, designed to meet the requirements of IP20 protection class. The construction conforms to EN 60439-1, configured as Form 1, ensuring accessibility, safety, and organized layout for all installed components.

Each cabinet is clearly marked with a durable, engraved designation label mounted on the cabinet door, providing quick identification and corresponding location indicators for maintenance or troubleshooting. This labeling system enhances on-site clarity during commissioning and future servicing, streamlining coordination among operators, electricians, and integrators.

Standard cabinet dimensions utilized across the line include:

• Width: 800 mm or 1,200 mm

• Depth: 600 mm

• Height: 2,200 mm

• Base height: 200 mm

The switching cabinets are arranged in a row configuration, creating a compact and linear electrical center aligned with the layout of the production line. For logistics and ease of installation, the cabinet row can be divided into individual shipping units, each with a maximum transport width of 3,600 mm. This modular approach minimizes installation downtime and facilitates clean integration into existing plant infrastructure.

The internal subdivision of the cabinets follows a function-specific architecture, improving workflow within the cabinet and ensuring safe separation of voltage levels and signal types. The structure typically includes:

• Feed Section: Main power connection, energy metering, surge protection, and incoming circuit breakers.

• Control Voltage Generation & Auxiliary Drives: Transformers, power supplies, and control relays responsible for generating 24V DC and auxiliary voltages required by sensors, actuators, and PLC systems.

• Main Drive Cabinet: Frequency inverters, soft starters, and protective relays for heavy-load motors used in wrapping, lifting, and strapping operations.

• Control Cabinet: Siemens PLC, I/O modules, communication modules (e.g., Profinet or Modbus), and MSGC touchscreen interface for centralized operation and real-time monitoring.

All wiring adheres to international color coding standards and is labeled at both ends for traceability. Signal and power cables are routed separately to prevent electromagnetic interference, with shielded cables grounded per EMC guidelines.

Cooling fans or optional air conditioners may be integrated for thermal management, ensuring the longevity of sensitive electronics in high-duty environments. Cabinets are tested and verified before dispatch for continuity, insulation resistance, and function per project specifications.

The switching cabinet system is engineered not only for operational reliability but also with long-term serviceability and modular upgrade potential in mind—an essential backbone for the fully automatic coil packaging line in high-throughput steel processing environments.

Main Electrical Components List for Automatic Steel Coil Packing Line