Fanuc alarm SV0445
αi/βi Servo (SV0xxx) · Fanuc 0i-D
What it means
Soft disconnection alarm - pulse coder feedback dropped out dynamically (detected via pulse count mismatch).
Likely causes
- Feedback cable intermittently breaking when moved
- Bad connector contact / coolant ingress
- Pulsecoder failing under vibration
- Noise on unshielded or badly routed cable
Triage note: Intermittent alarms during motion = cable; constant = pulsecoder. α pulsecoder variant reports as SV0453.
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
- Request a quote →
JF1 feedback cable
Encoder Feedback Cable · Primary suspect
- View part →
A860-0360-T201
αi Serial Pulsecoder (catalog item; match motor spec) · Common cause
Need the part urgently?
Send us alarm SV0445 with your machine details — typical RFQ turnaround is 24–48h.