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FANUC Alarm PAIN-543 — WARN …Min. output has flow > setpoint

Manufacturer wording — WARN %sMin. output has flow > setpoint
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC PAIN-543 (“WARN …Min. 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 2026-09-17 · 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 may be caused by a leaking or broken air line between the flow sensor and the applicator. The I/P transducer may be stuck open. The air booster may be stuck open or leaking. This may 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

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

PAIN-541WARN …Lower output did not lower flowPAIN-542WARN …Time out during a cal. testPAIN-544WARN …Max. output has flow < setpointPAIN-545WARN …Flow setpoint below globals

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