LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free →

FANUC Alarm FRCE-159 — F/S sensor limit overflow (F:…)

Manufacturer wording — F/S sensor limit overflow (F:%d^1)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC FRCE-159 (“F/S sensor limit overflow (F:…)”): An excessive load was put on the sensor head. First check: 1. Make sure that the value of 'Insert Force' in 'Basic Data' is not too large.

Updated 2026-09-17 · LogrobotLM reference

Description

An excessive load was put on the sensor head.

Remedy

1. Make sure that the value of 'Insert Force' in 'Basic Data' is not too large. If not, go to the next step. 2. Bad impedance parameters can cause vibration during force control. Increase the Mass value in the impedance parameters.

Related codes

FRCE-157F/S force data calc. overflow (F:…)FRCE-158F/S gauge data overflow (F:…)FRCE-160F/S cable is cut (F:…)FRCE-161F/S timeout error (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 →