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 → · Le diagnostic IA qui lit la sauvegarde de votre robot, sans rien téléverser.

FANUC Alarm PNT2-645 — %sDyn. yield > %% tolerance band

FANUC PNT2-645 (“%sDyn. yield > %% tolerance band”): As a particular flow rate set point is being output the yield (slpm/cnt) for that flow rate was approximately larger than the percent tolerance. First check: Decrease the yield.

Updated 2026-08-29 · LogrobotLM reference

Description

As a particular flow rate set point is being output the yield (slpm/cnt) for that flow rate was approximately larger than the percent tolerance. It is not likely that the set point will be reached within the specified tolerances. This might be caused by the use of a flow rate setpoint that is above the value that the air system can provide.

Remedy · Remède

Decrease the yield. Use larger diameter air lines to supply air to the cap. Use a larger ratio booster (2:1 instead of 1:1) booster (if the system can not supply the high flow rates provided). Use a smaller ratio booster. Otherwise accept a larger tolerance band. Increase the Percent tolerance band (by about 50%).

Frequently asked · Questions fréquentes

What does FANUC alarm PNT2-645 mean?
FANUC PNT2-645 (“%sDyn. yield > %% tolerance band”): As a particular flow rate set point is being output the yield (slpm/cnt) for that flow rate was approximately larger than the percent tolerance. It is not likely that the set point will be reached within the specified tolerances. This might be caused by the use…
How do you troubleshoot FANUC alarm PNT2-645?
Decrease the yield. Use larger diameter air lines to supply air to the cap. Use a larger ratio booster (2:1 instead of 1:1) booster (if the system can not supply the high flow rates provided). Use a smaller ratio booster. Otherwise accept a larger tolerance band. Increase the Percent tolerance band (by about 50%).

Related codes / Codes liés

PNT2-643%sCal. table adapted out,output upPNT2-644%sCal. table adapted in tolerancePNT2-654%sLower output did not lower flowPNT2-655%sTime out during a cal. test

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. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →