FANUC Alarm PNT2-591 — Cal. time out at max. flow
Manufacturer wording — %sCal. time out at max. flow
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC PNT2-591 (“Cal. time out at max. flow”): Accuflow timed out trying to reach the maximum flow rate. First check: Possibly decrease the Gain modifier used for the color. Likely part: Fluid regulator (Fluid regulator).
Updated 2026-09-17 · LogrobotLM reference
Description
Accuflow timed out trying to reach the maximum flow rate. Possible causes are: a high gain, a sticking I/P transducer, a bad fluid regulator or frequent fluid pressure changes.
Remedy
Possibly decrease the Gain modifier used for the color. Retry the calibration. Check and change the transducer if necessary, replace the fluid regulator or service the surge suppression system on the fluid supply pump. The calibration timeout parameter can be increased.
Part to check / replace
FANUC PNT2-591 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 →