The Control Unit CU310-2 PN is a crucial component of the Sinamics S120 Drive. This unit is responsible for the drive's external communication via PROFINET, a standard for industrial networking in automation. This guide will delve into the features and functions of the Control Unit CU310-2 PN, providing a comprehensive understanding of its role in the Sinamics S120 Drive system.

What is the Control Unit CU310-2 PN?

The Control Unit CU310-2 PN is a control module designed for single drives. It communicates with the Power Modules via two PROFINET interfaces, which serve as the external communications interface. Additionally, it features a LAN (Ethernet) interface, TTL/HTL/SSI – encoder evaluation, and an analog setpoint input.

The Control Unit CU310-2 PN is designed to work with the firmware and default parameters stored on a separate memory card. This memory card must be ordered separately, and it is crucial for the operation of the Control Unit.

Understanding the Serial Number

The serial number of the Control Unit CU310-2 PN, found on the rating plate, provides valuable information about the unit's manufacturing date. This date is essential to understand the storage period of the unit, which starts from the date of manufacture and not from the date the equipment was shipped.

If the unit has been in storage for more than two years, the components may suffer damage when switched on. In such cases, it is necessary to reform the DC link capacitors of the Power Module.

Forming the DC Link Capacitors

When DC link capacitors are formed, a defined voltage is connected to them, and a defined current flows. This process restores the appropriate capacitor characteristics, allowing them to be reused as DC link capacitors.

Conclusion

The Control Unit CU310-2 PN plays a vital role in the operation of the Sinamics S120 Drive. Understanding its features and functions can help users effectively operate and maintain their drive system. Regular checks and updates can prevent unexpected downtime and costly repairs, ensuring the drive continues to operate at peak performance.

Remember, always consult the detailed instructions provided in the manual or other documentation by Siemens for any maintenance or replacement procedures. If you need clarification at any stage in the process, it's best to consult with a professional or the manufacturer's support team.