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FANUC Alarm PNT1-704 — %sZero turbine speed timeout

FANUC PNT1-704 (“%sZero turbine speed timeout”): All of the conditions were set for the turbine to be spinning but a zero speed was measured for a set time period. First check: If the turbine can be seen spinning, check the following: the speed sensor interface and speed sensor pickup.

Updated 2026-08-29 · LogrobotLM reference

Description

All of the conditions were set for the turbine to be spinning but a zero speed was measured for a set time period. This might be due to no turbine air pressure or pilot air pressure. One of the following items might be broken: the I/P transducer, speed sensor pickup, speed sensor interface. The Zero speed timeout might be set too short.

Remedy · Remède

If the turbine can be seen spinning, check the following: the speed sensor interface and speed sensor pickup. Otherwise, check the other items listed above. Possibly increase the Zero speed timeout by about 50%.

Frequently asked · Questions fréquentes

What does FANUC alarm PNT1-704 mean?
FANUC PNT1-704 (“%sZero turbine speed timeout”): All of the conditions were set for the turbine to be spinning but a zero speed was measured for a set time period. This might be due to no turbine air pressure or pilot air pressure. One of the following items might be broken: the I/P transducer, speed sensor pickup,…
How do you troubleshoot FANUC alarm PNT1-704?
If the turbine can be seen spinning, check the following: the speed sensor interface and speed sensor pickup. Otherwise, check the other items listed above. Possibly increase the Zero speed timeout by about 50%.

Related codes / Codes liés

PNT1-702%sRequested speed over valid rangePNT1-703%sFailed to reach setpointPNT1-705%sTurbine over speedPNT1-706%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 →