Fanuc alarm SV0607
αi/βi Servo (SV0xxx) · Fanuc 0i-D
What it means
Open phase detected in the converter main power supply.
Likely causes
- Open phase in incoming 3-phase supply
- Burnt input terminal, fuse, or contactor pole
Triage note: Measure all three phases at the machine terminals under load before touching electronics.
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
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Input fuses / MCC contactor per machine spec
Input Circuit Components · Common cause
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A06B-6087-H137
Power Supply Module αi PSM (only if sensing stage confirmed failed) · Check if others ruled out
Need the part urgently?
Send us alarm SV0607 with your machine details — typical RFQ turnaround is 24–48h.