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4 APPLICABLE FUNCTIONS
4.2 Machine diagnosis
Setting method
■
Friction estimation function
1.
Startup the system.
2.
Setting of [Pr. PF31]
When the maximum operation speed is under the rated speed, set the value to 1/2 of the maximum speed during operation.
Alternatively, set [Pr. PF34.6] to "1" (Automatic setting) to automatically calculate [Pr. PF31].
3.
Drive the servo motor.
4.
The static friction and the dynamic friction (at rated speed) are estimated.
5.
Save the data of the estimated static friction and dynamic friction.
*1 When "0" is set, the value is set to half the rated speed.
*2 Clamped at maximum speed. When changing the speed to the permissible speed, set the speed in [Pr. PA 28.4 Speed range limit
selection].
■
Vibration estimation function
Setting is not required. The servo amplifier constantly estimates the vibration in the operation pattern.
1.
Startup the system.
2.
Drive the servo motor.
3.
The vibration level and vibration frequency are estimated.
4.
Save the estimated vibration level and vibration frequency.
Servo
parameter
Symbol
Name
Description
[Pr. PF31]
FRIC
Machine diagnosis function -
Friction judgment speed
Set the servo motor speed to divide the friction estimation area between low-speed and
high-speed in the friction estimation process of machine diagnosis.
When the maximum operation speed is under the rated speed, it is recommended to set
half the value of the maximum operation speed.
Setting [Pr. PF34.6 Friction estimate area judgment speed setting] to "1" (Automatic
setting) will automatically calculate the servo parameter value from the operation pattern
during servo motor driving. When this servo parameter value is calculated automatically,
this servo parameter value is automatically rewritten to the calculation result.
Initial value: 0 [r/min]
[Pr. PF34.6]
*MFP
Friction estimate area
judgment speed setting
Set the setting method for Machine diagnosis function - Friction judgment speed.
0: Manual setting
1: Automatic setting
When "1" (Automatic setting) is set, [Pr. PF31 Machine diagnosis function - Friction
judgment speed] will be calculated according to the servo motor operation pattern. After
the calculation, [Pr. PF31 Machine diagnosis function - Friction judgment speed] is
rewritten to the calculation result, and the servo parameter will change to "0" (Manual
setting).
When "1" (Automatic setting) is set, friction estimation stops.
Содержание MR-JET
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