FANUC Alarm PNT1-721 — Zero turbine speed timeout
Manufacturer wording — %sZero turbine speed timeout
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC PNT1-721 (“Zero turbine speed timeout”): All of the conditions were set for turbine to be spinning and a zero speed was measured for a set time period. First check: N/A
Updated 2026-09-17 · LogrobotLM reference
Description
All of the conditions were set for turbine to be spinning and a zero speed was measured for a set time period. This may be due to no turbine air pressure or pilot air pressure. One of the following items may be broken: the I/P transducer, speed sensor pickup, speed sensor interface. The Zero speed timeout may be set too short. If turbine can be seen spinning, check: speed sensor interface, speed sensor pickup. Otherwise check the other items listed above. Possibly iwncrease the Zero speed timeout by about 50%.
Remedy
N/A
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 →