Fanuc alarm SV0603
αi/βi Servo (SV0xxx) · Fanuc 0i-D
What it means
Inverter: IPM alarm (overheat) - IPM thermal protection latched.
Likely causes
- Motor driven beyond continuous rating
- Blocked cabinet cooling / high ambient
- Heat-sink fan failure
- SVM IPM thermally degraded
Triage note: Thermal variant of SV0449; fix cooling first - repeated thermal events degrade the IPM until it fails permanently as SV0449 / LED 8.
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
- Request a quote →
Per-module fan kit
Cooling Fan Assembly · Common cause
- Request a quote →
A06B-6114-H2xx
Servo Amplifier Module αiSVM (rating-dependent) · Common cause
Need the part urgently?
Send us alarm SV0603 with your machine details — typical RFQ turnaround is 24–48h.