Mitsubishi Electric Melservo-J5 MR-J5 Series User Manual page 92

[AL. 0F7.5_Static friction failure prediction warning]
Cause
1.
As the surrounding environment changed, the
friction of the equipment was also changed.
2.
Changes in the equipment configuration
changed the friction of the equipment.
3.
Due to degradation of components in the
equipment, the friction of the equipment
changed.
[AL. 0F7.6_Belt failure prediction warning]
Cause
1.
Belt extension made the belt tension smaller.
2.
The setting of the belt tension threshold is
incorrect.
1 SERVO AMPLIFIER TROUBLESHOOTING
90
1.3 Handling methods for alarms/warnings
Check/action method
If the operating environment was changed from the initial operation, reset the
threshold, and then re-create a threshold. If the operating environment is
unchanged, refer to 2 and examine the equipment.
If the equipment configuration is changed, reset the threshold, and then create
a threshold again. If the equipment configuration is unchanged, refer to 3 and
examine the equipment.
Check that the static friction has changed from the initial operation. If the static
friction has not changed, set a larger value for friction failure prediction
threshold multiplication, and then restart the equipment.
[A]: [Pr. PF52.4 Static friction failure prediction - Threshold multiplication]
[G] [WG]: [Pr. PF40.4 Static friction failure prediction - Threshold multiplication]
If the static friction has changed, perform an inspection and maintenance of
the equipment as necessary.
Check/action method
If the value of the belt tension estimation is small, perform an inspection and
maintenance of the equipment.
Set the value of the initial belt stretch to [Pr. PF76 Belt tension irregular
threshold].
Model
[A]
[G]
[WG]
Model
[A]
[G]
[WG]