LogrobotLM

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FANUC Alarm PNT2-656 — %sMin. output has flow > setpoint

FANUC PNT2-656 (“%sMin. output has flow > setpoint”): With a minimum control output the flow rate was measured to be higher than the setpoint (requested flow). First check: Check and repair the various air lines.

Updated 2026-08-29 · LogrobotLM reference

Description

With a minimum control output the flow rate was measured to be higher than the setpoint (requested flow). The Max. control out (ms) parameter effects the sensitivity of this alarm. This might be caused by a leaking or broken air line between the flow sensor and the applicator. The I/P transducer might be stuck open. The air booster may be stuck open or leaking. This might be caused by a faulty air flow sensor (reading more flow than there really is). Note, AccuAir temporarily automatically changes to Open Loop when this alarm occurs.

Remedy · Remède

Check and repair the various air lines. Check and repair the air booster. Check and repair the I/P transducer. Possibly increase the Max. control out (ms) parameter.

Frequently asked · Questions fréquentes

What does FANUC alarm PNT2-656 mean?
FANUC PNT2-656 (“%sMin. output has flow > setpoint”): With a minimum control output the flow rate was measured to be higher than the setpoint (requested flow). The Max. control out (ms) parameter effects the sensitivity of this alarm. This might be caused by a leaking or broken air line between the flow sensor and…
How do you troubleshoot FANUC alarm PNT2-656?
Check and repair the various air lines. Check and repair the air booster. Check and repair the I/P transducer. Possibly increase the Max. control out (ms) parameter.

Related codes / Codes liés

PNT2-654%sLower output did not lower flowPNT2-655%sTime out during a cal. testPNT2-657%sMax. output has flow < setpointPNT2-658%sFlow setpoint below globals

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 →