Fanuc alarm OT0500: OVER TRAVEL: +n
overtravel alarm · Fanuc 0i-D
What it means
Stored stroke limit exceeded in positive direction (OT0501 = negative) - soft limit hit
Likely causes
- lost reference position (crash, e-stop mid-travel, battery-dead axis)
- wrong work/offset shift
- genuine jog past soft limit
Triage note: Usually NO parts needed: jog out with limit-release or redo reference return; if axis keeps losing position, chase SV0300/battery instead
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
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A02B-0200-K102
Battery Unit (if axis lost absolute position) · Check if others ruled out
Need the part urgently?
Send us alarm OT0500 with your machine details — typical RFQ turnaround is 24–48h.