This guide helps users select the appropriate power module and control unit for the Siemens SINAMICS G120 variable frequency drive.
The SINAMICS G120 is a modular variable‑frequency drive system used to power three‑phase AC motors. The guide outlines the technical requirements, such as supply voltage, motor rating, load type, environment temperature and altitude, and walks through the selection steps for both power modules and control units.
It provides detailed information on power‑module options (0.37 kW‑250 kW), load classifications (light LO and heavy HO), derating curves for high altitude or temperature, and the available control‑unit communication interfaces (USS/MODBUS RTU, PROFIBUS DP, PROFINET) and I/O configurations, including encoder support. This manual is written in Chinese.
| Power range | 0.37 kW – 250 kW |
|---|---|
| Supply voltage options | Single‑phase 220 V, Three‑phase 220 V, Three‑phase 380 V |
| Derating conditions | Altitude > 1000 m or temperature > 40 °C |
It supports power modules from 0.37 kW up to 250 kW.
The drive can be powered by single‑phase 220 V, three‑phase 220 V, or three‑phase 380 V.
If the installation altitude is above 1000 m or the ambient temperature exceeds 40 °C, the drive’s capacity must be reduced according to the derating curve.