Fanuc alarm SV0387: ABNORMAL ENCODER (EXT)
αi/βi Servo (SV0xxx) · Fanuc 0i-D
What it means
A general abnormality was reported by the separate-type detector outside the specific Fanuc-defined error classes above. Because third-party scales return manufacturer-specific status codes, Fanuc directs you to the scale maker for details. Record the scale model and any sub-status shown on the diagnosis screens before contacting them.
Likely causes
- Internal scale/detector self-test failure
- Unsupported or mismatched detector connected
- Wiring error in the separate detector interface
Need the part urgently?
Send us alarm SV0387 with your machine details — typical RFQ turnaround is 24–48h.