FANUC Alarm SEAL-299 — WARN Enc Belt slip (E…, Mtr …)

Manufacturer wording — WARN Enc Belt slip (E%d, Mtr %s)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC SEAL-299 (“WARN Enc Belt slip (E…, Mtr …)”): System has detected that the encoder to meter belt linkage is slipping. First check: Tighten the belt tension.

Updated 2026-09-17 · LogrobotLM reference

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →