Siemens 6ES5700-2LA12 – 12-Slot PLC Rack for SIMATIC S5

This PLC rack provides mechanical support and backplane connectivity for S5 modules. It holds up to twelve separate cards in a single chassis assembly. You can mount this unit in standard 19-inch control cabinets.

Key Technical Specifications

Physical Construction and Dimensions

This PLC rack measures 480 mm in width and 260 mm in height. Its depth reaches 160 mm for deep cabinet installations. The unit weighs 3.8 kilograms due to the heavy steel frame construction. Standard 19-inch rack ears allow direct mounting into industrial enclosures.

Internal Backplane and Energy Storage

Thirty-six passive components reside on the internal backplane PCB. Four 1000 µF bulk capacitors provide a total energy storage of 4000 µF. This capacitor bank decouples all three power rails across twelve slots. Consequently, each module receives clean 5V, 12V, and 24V DC simultaneously. Heavy copper traces carry up to 10 amps on the 5V rail safely.

Slot Configuration and Card Guidance

Each of the twelve slots features a 20-pin backplane connector for module interface. Plastic card guides align each board perfectly before connector engagement. You can install CPU, I/O, or communication modules in any combination of slots. Therefore, the system allows flexible configuration based on your process requirements. A locking bar across the top secures all modules against vibration.

Power Distribution and Cabinet Mounting

The backplane distributes power from an external supply to all slots. Separate ground planes minimize digital noise coupling between adjacent cards. Passive convection cooling handles heat dissipation without fans or moving parts. An earth ground stud connects the chassis to plant safety ground. The vented cover allows airflow while preventing accidental contact with live traces.