Product Description
The Siemens 6SL3220-3YH68-1CB0 is a robust SINAMICS G120X frequency inverter designed for demanding industrial applications. This high-performance drive offers precise motor control, energy efficiency, and seamless integration into automation systems. It delivers a power output of 250 horsepower (185 kW) at 380-480V AC, ensuring reliable operation even under heavy loads. The unit features advanced vector control technology, providing exceptional torque and speed regulation across a wide range of motor types. Integrated safety functions, such as STO (Safe Torque Off), enhance machine safety and reduce downtime. The inverter's rugged design and conformal coating guarantee durability in harsh environments, while its user-friendly interface and comprehensive diagnostics simplify commissioning and maintenance. This is a dependable solution for optimizing performance and minimizing energy consumption in various industrial processes.
Is Your Device Showing These Signs?
Siemens 6SL3220-3YH68-1CB0 SINAMICS G120X drive failures often stem from DC link capacitor degradation, IGBT module failures due to overcurrent or thermal stress, and control board malfunctions affecting communication or parameterization. Resolving these issues involves replacing faulty capacitors, testing and replacing damaged IGBTs, and troubleshooting/repairing the control board, including firmware corruption or component-level failures. Proper cooling system maintenance and adherence to specified operating conditions are crucial to prevent recurrence. Parameter settings must be verified and adjusted to optimize motor performance and prevent drive trips.
Technical specifications
The Siemens 6SL3220-3YH68-1CB0 is a SINAMICS G120X series frequency converter designed for industrial pump, fan, and compressor applications. This robust converter features a power rating of 315 kW at 400V AC with a frame size FSF, providing reliable motor control and energy efficiency. It incorporates advanced vector control algorithms for precise speed and torque regulation, ensuring optimal performance across varying load conditions. Integrated safety functions, including Safe Torque Off (STO), enhance operational safety and reduce downtime. The converter supports various communication protocols such as PROFINET, Ethernet/IP, and Modbus TCP for seamless integration into existing automation systems. It is engineered for harsh environments with a high degree of protection, ensuring continuous operation in demanding industrial settings.
Our Repair Process for the
6SL3220-3YH68-1CB0
Our repair process for the Siemens 6SL3220-3YH68-1CB0 begins with a comprehensive diagnostic evaluation to pinpoint the failure. Following the diagnosis, a detailed repair plan and firm quotation are provided. Upon approval, skilled technicians execute the repair using quality components and adhering to strict Siemens specifications. Rigorous testing under simulated operating conditions ensures optimal performance and reliability. The repaired unit is then carefully packaged and promptly shipped back, accompanied by a full repair report and warranty.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.

Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.

















