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4 APPLICABLE FUNCTIONS
4.5 Machine diagnosis
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Friction failure prediction function
When the upper and lower thresholds are inputted to the servo amplifier with the threshold setting method, the servo amplifier
starts the static friction failure prediction. For the threshold setting method, refer to the following.
Page 225 Threshold setting method
During the static friction failure prediction, [AL. 0F7 Machine diagnostic warning] is outputted when the static friction estimated
by the friction estimation function exceeds the upper limit threshold. Also, [AL. 0F7 Machine diagnostic warning] is outputted
even when the static friction falls below the lower limit threshold.
After [AL. 0F7 Machine diagnosis warning] is outputted, if the static friction falls within the range of the upper and lower
threshold, [AL. 0F7 Machine diagnostic warning] will be canceled.
[Pr. PF70] × [Pr. PF40.4]
[Pr. PF69]
ON
OFF
WNG
Torque
Time
Threshold = [Pr. PF69] + [Pr. PF70] × [Pr. PF40.4]
Static friction
Threshold = [Pr. PF69] - [Pr. PF70] × [Pr. PF40.4]
(Warning)