8-168
182582-1CD
182582-1CD
8 System Setup
8.21Preventive Maintenance Function
MH900, DX200 Controller
This function records the torque element arising from the deterioration of
the speed reducer on a daily basis, and diagnoses the lifetime of the
speed reducer by monitoring the change of the torque element.
By operating a job in the play mode, a data (the torque element arising
from the deterioration of the speed reducer) for each axis is recorded
automatically on a daily basis, and the data is accumulated.
When the difference value between the latest value “the average value
from the measured result of the five days (the initial value) including the
day to diagnose” and the average value “the average of 30 days (the initial
value) between prior to 60 days from the day to diagnose and prior to 90
days from the day to diagnose” becomes the threshold value or more, it
determines the speed reducer is almost failure, and outputs the warning.
The average value is indicated with%, and 100% indicates the standard
torque.
Torque
Torque
Speed
Speed
Torque and speed at the normal operation period
Torque and speed at the deterioration period
Torque average value
Prior to 90 days Prior to 60 days
Prior to 60 days from the day to diagnose
A day to diagnose
When the measured value is greater
than the threshold value, it outputs the warning.
Latest period (5 days)
Latest value
Average value
(average value of the average period)
Average period (30 days)
(average of the nearest value)
………
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