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FANUC Alarm PNT1-720 — %sFailed to reach setpoint

FANUC PNT1-720 (“%sFailed to reach setpoint”): The turbine speed failed to come within the Tolerance Band setting within the time setting of Min. First check: If the Max.

Updated 2026-08-29 · LogrobotLM reference

Description

The turbine speed failed to come within the Tolerance Band setting within the time setting of Min. set point reached (ms) value. This can be caused by noise in the speed sensor signals, low air supply pressure or other failures. This might occur with the Max. output has speed < setpoint alarm.

Remedy · Remède

If the Max. output has speed < setpoint alarm is also in the alarm log, follow the remedies for that alarm. Examine the displayed turbine speed and evaluate if it is bouncing a lot. If so, decrease the PID gains. Possibly increase the Tolerance Band parameter by about 30% to 50%, for example from 1.8% to 2.3%. Increase the Min. set point reached value by about 30% to 50%.

Frequently asked · Questions fréquentes

What does FANUC alarm PNT1-720 mean?
FANUC PNT1-720 (“%sFailed to reach setpoint”): The turbine speed failed to come within the Tolerance Band setting within the time setting of Min. set point reached (ms) value. This can be caused by noise in the speed sensor signals, low air supply pressure or other failures. This might occur with the Max. output has…
How do you troubleshoot FANUC alarm PNT1-720?
If the Max. output has speed < setpoint alarm is also in the alarm log, follow the remedies for that alarm. Examine the displayed turbine speed and evaluate if it is bouncing a lot. If so, decrease the PID gains. Possibly increase the Tolerance Band parameter by about 30% to 50%, for example from 1.8% to 2.3%.…

Related codes / Codes liés

PNT1-718%sMax. output has speed < setpointPNT1-719%sRequested speed over valid rangePNT1-721%sZero turbine speed timeoutPNT1-722%sTurbine over speed

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