FANUC Alarm PNT2-593 — Zero fluid flow rate detected
Manufacturer wording — %sZero fluid flow rate detected
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC PNT2-593 (“Zero fluid flow rate detected”): All of the conditions were set for fluid to be flowing and a zero flow rate was measured. First check: If fluid can be seen coming from the applicator, check the following: flow meter, flow meter pickup, Accuflow interface and the 32 point input module.
Updated 2026-09-17 · LogrobotLM reference
Description
All of the conditions were set for fluid to be flowing and a zero flow rate was measured. This might be due to no fluid pressure or pilot air pressure. With a very low flow rate the gain might be too high. One of the following items might be broken: Color Valve, Color select board, gun trigger, flow meter, flow meter pickup, Accuflow interface board, or the 32 point input module. Note, Accuflow automatically changes to Open Loop when this failure occurs.
Remedy
If fluid can be seen coming from the applicator, check the following: flow meter, flow meter pickup, Accuflow interface and the 32 point input module. Otherwise, check the other items listed above. If it occurs with very low flow rates, decrease the Gain modifier.
Related codes
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 →