Mitsubishi Electric MELSERVO-J5 User Manual page 272
Ac servo system
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Also See for MELSERVO-J5:
- User manual (478 pages) ,
- Sample screen manual (128 pages) ,
- Introduction manual (112 pages)
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Setting method
Use the gear failure diagnosis function with the following procedure:
Startup the system.
Set [Pr. PF66.0-3 Gear for backlash estimation - Numerator] and
[Pr. PF66.4-7 Gear for backlash estimation - Denominator] to the gear
ratio of the gears connected to the servo motor.
Set [Pr. PF67 Backlash nominal value] based on the backlash
presented by the manufacturer of the gears being used.
Use [Pr. PF68 Backlash threshold multiplication] to set a backlash
threshold that triggers [AL. 0F7 Machine diagnosis warning].
Perform backlash estimation using MR Configurator2.
The result of the backlash estimation is saved in the servo amplifier.
The result of the backlash estimation is displayed on MR Configurator2.
The result is stored in [Backlash estimation value (Obj. 2C29h)].
Has the estimated backlash value
[AL. 0F7 Machine diagnosis warning] will be triggered.
Reset the controller or cycle the power of the servo amplifier.
*1 The threshold for outputting [AL. 0F7 Machine diagnostic warning] is backlash threshold = [Pr. PF67 Backlash nominal value] × [Pr.
PF68 Backlash threshold multiplication].
*2 Once backlash estimation is performed, the servo amplifier will enter the test operation mode and control commands from the controller
will not be available.
4 APPLICABLE FUNCTIONS
270
4.5 Machine diagnosis
Start
Which function?
Gear failure prediction function
*2
exceeded the threshold?
YES
End
Backlash estimation function
Perform backlash estimation using MR Configurator2.
*1
The result of the backlash estimation is saved in the servo amplifier.
The result of the backlash estimation is displayed on MR Configurator2.
The result is stored in [Backlash estimation value (Obj. 2C29h)].
NO
*2
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