FANUC Alarm PNT1-720 — Failed to reach setpoint
Manufacturer wording — %sFailed to reach setpoint
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC PNT1-720 (“Failed 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 2026-09-17 · 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
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… 50%, for example from 1.8… 2.3%. Increase the Min. set point reached value by about 30… 50%.
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 →