FANUC Alarm PNT1-626 — Max. output has flow < setpoint
Manufacturer wording — %sMax. output has flow < setpoint
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC PNT1-626 (“Max. 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, clean, and possibly replace the air cap. Likely part: Air flow sensor (Air flow sensor) +1 more.
Updated 2026-09-17 · 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:
Remedy
Check, clean, and possibly replace the air cap. If air is observed to be flowing (when commanded), possibly replace the air flow sensor. Also check the following:
Part to check / replace
FANUC PNT1-626 points to the hardware below — start here before ordering.
Tap a part for every code that points to it — and verify the exact variant for your controller before ordering.
Related codes
Same hardware involved
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 →