Mitsubishi Electric MELSERVO-J5 MR-J5 Series User Manual page 182

Setting method [A]
■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. PF51.6] 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.
Servo Symbol
parameter
[Pr. PF31] FRIC
[Pr. PF51.6] *MFP
*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. PA28.4 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.
4 APPLICABLE FUNCTIONS
180
4.5 Machine diagnosis
Name
Machine diagnosis function -
Friction judgment speed
Friction estimate area judgment
speed setting
Description
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. PF51.6 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], [mm/s]
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] will be calculated according to the
servo motor operation pattern. After the calculation, [Pr. PF31] 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.
*1*2