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FANUC Alarm PNT1-657 — %sMax. output has flow < setpoint

FANUC PNT1-657 (“%sMax. output has flow < setpoint”): With a maximum control output, the flow rate was measured to be lower than the setpoint (requested flow). First check: Check and perform the following:

Updated 2026-08-29 · LogrobotLM reference

Description

With a maximum control output, the flow rate was measured to be lower than the setpoint (requested flow). The Max. control out (ms) parameter affects the sensitivity of this alarm. This is likely caused by a clogged air cap. This might also be caused by: pinched air lines, a broken I/P transducer, or a broken air flow sensor. Note: AccuAir temporarily and automatically changes to Open Loop when this alarm occurs.

Remedy · Remède

Check and perform the following:

Frequently asked · Questions fréquentes

What does FANUC alarm PNT1-657 mean?
FANUC PNT1-657 (“%sMax. output has flow < setpoint”): With a maximum control output, the flow rate was measured to be lower than the setpoint (requested flow). The Max. control out (ms) parameter affects the sensitivity of this alarm. This is likely caused by a clogged air cap. This might also be caused by:…
How do you troubleshoot FANUC alarm PNT1-657?
Check and perform the following:

Related codes / Codes liés

PNT1-655%sTime out during a cal. testPNT1-656%sMin. output has flow > setpointPNT1-658%sFlow setpoint below globalsPNT1-659%sRequested flow above cal. table

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 →