LogrobotLM

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FANUC Alarm FRCE-520 — AIT all switch OFF (F:…)

Manufacturer wording — AIT all switch OFF (F:%d^1)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC FRCE-520 (“AIT all switch OFF (F:…)”): Force control is disabled in all directions during the impedance parameters auto tuning. First check: If the prepared default data for the application is used, this error should not occur.

Updated 2026-09-17 · LogrobotLM reference

Description

Force control is disabled in all directions during the impedance parameters auto tuning.

Remedy

If the prepared default data for the application is used, this error should not occur. Try to copy the default data corresponding to the application into the schedule data.

Related codes

FRCE-518AIT P direction unstable (F:…)FRCE-519AIT R direction unstable (F:…)FRCE-521AIT X direction fail (F:…)FRCE-522AIT Y direction fail (F:…)

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 →