Product Description
The Siemens 6SL3230-3YH44-1UP0 SINAMICS G120X is a robust and reliable frequency inverter engineered for demanding industrial applications. This inverter features a power rating of 75 kW (100 hp) at 400V AC, ensuring ample power for a wide array of motor-driven systems. It is designed for variable speed control of three-phase AC induction motors, optimizing energy efficiency and process control. The unit boasts a rugged enclosure, providing protection against harsh environmental conditions, including dust and moisture. Integrated safety functions, such as Safe Torque Off (STO), are standard, enhancing operational safety. The intuitive user interface and advanced communication protocols, including PROFINET, facilitate seamless integration into existing automation systems. This inverter is a dependable solution for applications requiring precise motor control, energy savings, and reliable performance in challenging industrial settings.
Is Your Device Showing These Signs?
Siemens 6SL3230-3YH44-1UP0, a SINAMICS G120X series inverter, commonly experiences issues related to DC link capacitor degradation, resulting in overvoltage faults and reduced drive performance. IGBT failures due to thermal stress or excessive load are frequent. Communication errors on the PROFINET interface demand firmware updates or hardware repairs. Parameter corruption within the control unit necessitates reprogramming and configuration verification. Overcurrent trips are traced to motor insulation breakdown or incorrect motor parameter settings.
Technical specifications
The Siemens 6SL3230-3YH44-1UP0 is a SINAMICS G120X series frequency converter designed for industrial pump, fan, and compressor applications. This robust converter operates on a 380-480V 3-phase AC power supply and delivers a rated output current of 215A with a power rating of 110kW (150 hp). It features sensorless vector control for precise motor speed and torque regulation, ensuring optimal performance and energy efficiency. Integrated safety functions, including STO (Safe Torque Off), enhance operational safety. The converter supports various communication protocols such as PROFINET, Ethernet/IP, and Modbus TCP, enabling seamless integration into existing automation systems. Its rugged design and conformal coating provide reliable operation in harsh industrial environments, with an IP20 protection rating. The unit includes an integrated braking chopper and EMC filter Class A, minimizing installation costs and electromagnetic interference.
Our Repair Process for the
6SL3230-3YH44-1UP0
Our repair process for the Siemens 6SL3230-3YH44-1UP0 begins with a comprehensive diagnostic evaluation to pinpoint the failure. Following the diagnosis, a detailed repair plan is formulated, and you receive a firm quotation for approval. Upon approval, skilled technicians execute the repair using genuine Siemens components or approved equivalents. Rigorous testing under simulated operating conditions follows the repair to ensure optimal performance and reliability. The repaired unit is then carefully packaged and shipped back, accompanied by a detailed 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.

















