Fanuc alarm SP9035: EX SETTING GEAR RATIO
spindle alarm (serial spindle, alpha i) · Fanuc 0i-D
What it means
Gear ratio data exceeded the allowed limit. The relationship programmed between motor revolutions and spindle revolutions is outside what the differential/speed control math can represent.
Likely causes
- Impossible high/low gear ratio parameters for the installed gearbox
- Mismatched ratio constants after a gearbox or motor change
- Corrupted gear-related spindle parameters
Need the part urgently?
Send us alarm SP9035 with your machine details — typical RFQ turnaround is 24–48h.