Fanuc alarm SV0600: INV. DC LINK OVER CURRENT
αi/βi Servo (SV0xxx) · Fanuc 0i-D
What it means
Excessive current was measured flowing in the amplifier's DC link. Overcurrent on the bus typically reflects a short or severe overload downstream of the bus — in the inverter section, motor windings, or power cabling. Megger-check motor and power leads and inspect for coolant ingress before assuming amplifier failure.
Likely causes
- Motor winding short or insulation breakdown
- Power line phase-to-phase short or crushed cable
- Inverter transistor module failure
- Instantaneous extreme load spike
Need the part urgently?
Send us alarm SV0600 with your machine details — typical RFQ turnaround is 24–48h.