Depending on the specific Siemens drive family (e.g., Sinamics G120 vs. S120), the full designation may appear as F07802 , F07902 , or simply 7902 . For the purpose of this guide, we treat "7902" as the primary identifier for a Drive Infeed or DC link overvoltage/timeout condition specific to the power unit configuration.
In technical terms:
Consult Siemens Industry Online Support (entry ID: 109750131 for SINAMICS G120 fault codes) or your local Siemens service partner. For real-time help, use the Siemens Drive Monitor app to log fault buffer (r0945, r0949). Siemens Drive Fault Code 7902