3 Utility Function Mode
3.2.20 Vibration Detection Level Initialization (Fn01B)
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3.2.20 Vibration Detection Level Initialization (Fn01B)
This function detects vibration when servomotor is connected to a machine in opera-
tion and automatically adjusts the vibration detection level (Pn312) to output more
exactly the vibration alarm (A.520) and the vibration warning (A.911).
The vibration detection function detects vibration elements according to the motor
speed.
If the vibration exceeds the detection level calculated by the following formula, the
alarm or warning will be output according to the setting of vibration detection switch
(Pn310).
• Use this function if the vibration alarm (A.520) or the vibration warning (A.911) is
not output correctly when a vibration at the factory setting of the vibration detec-
tion level (Pn312) is detected. In other cases, it is not necessary to use this func-
tion.
• The vibration alarm or warning detection sensibility differs depending on the
machine conditions. In this case, fine-tune the setting of the vibration detection
sensitivity (Pn311) using the above detection level formula as a guide.
Parameter Meaning When Enabled Classification
Pn310
n.0
[Factory setting]
Does not detect vibration.
Immediately Setupn.1
Outputs the warning (A.911)
when vibration is detected.
n.2
Outputs the alarm (A.520)
when vibration is detected.
Detection level =
Vibration detection level (Pn312 [min
-1
]) × Vibration detection sensitivity (Pn311 [%])
100
Pn311
Vibration Detection Sensitivity
Classification
Setting Range Setting Unit Factory Setting When Enabled
50 to 500 1% 100 Immediately Tuning
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