FANUC Alarm PNT1-721 — %sZero turbine speed timeout

FANUC PNT1-721 (“%sZero 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 2026-08-29 · 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 · Remède

N/A

Frequently asked · Questions fréquentes

What does FANUC alarm PNT1-721 mean?: FANUC PNT1-721 (“%sZero 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. 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…
How do you troubleshoot FANUC alarm PNT1-721?: N/A

Related codes / Codes liés

PNT1-719%sRequested speed over valid range PNT1-720%sFailed to reach setpoint PNT1-722%sTurbine over speed PNT1-723%sTurbine under speed fault

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. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →