Consumption Degree Calculation Function - Mitsubishi Electric CR800-D Series User Manual

2.1.2. Consumption degree calculation function

This function calculates the consumption degree [%] of robot components based on the actual operating
status (motor speed, load status, and others), and calculates the period up to maintenance/inspection or
overhaul.
Consumption Degree [%] is calculated based on the recommended maintenance time of each part as 100
[%].
Beside consumption degree [%] of each robot component, the Total Score (Consumption Degree [%] and
Up to Maintenance) of maintenance parts (grease, timing belt), and the Total Score (Consumption Degree
[%]) of overhaul parts (reduction gear, bearing, ball screw, ball spline) are calculated, respectively and are
displayed on the comprehensive evaluation screen.
Target parts
Maintenance parts Grease
Timing belt
Overhaul parts Reduction gear
Bearing
Ball screw/ball spline
Operating Information -
*1: Of the maintenance parts (grease, timing belt), the Consumption Degree [%] and Up to Maintenance [h]
of the part (joint axis) having the least remaining time are used.
*2: Of the overhaul parts (reduction gear, bearing, ball screw, ball spline), the Consumption Degree [%] of
the part (joint axis) having the least up to maintenance time is used.
Information confirmation
Information
Check method
Setting/operation
Setting item
Setting method
Operation item
Basic specifications 20
Output data
Grease consumption degree [%] (for each joint axis)
Timing Belt consumption degree [%] (for each joint axis)
Total Score (Consumption Degree [%], Up to Maintenance
*1
[h])
Gear consumption degree [%] (for each joint axis)
Bearing consumption degree [%] (for each joint axis)
Ball Screw/Ball Spline consumption degree [%] (for each joint
axis)
Total Score (Consumption Degree [%])
Servo ON Time [h], Operation Time [h], Actual Operation
Time [h], Power ON Time [h], Servo ON Count [times], Motor
Cumulative Rotation Count [rotation] (for each joint axis)
· Consumption Degree: See above
· Up to Maintenance: See above (Total Score Maintenance Parts)
· Operating Information: See above
· [Consumption Status]: Existence of wear in each target part
· Maintenance Log: Log data under Maintenance Reset (date & time, parts, joint
axes)
RT ToolBox3 Predictive maintenance screen
(Refer to 5. Total score,.6 Consumption degree calculation function.)
[Parameters] (Refer to 14.2 Consumption degree calculation function
14.2.2 Data acquisition parameters.)
[Status Variable] (Refer to 13 Robot (system) status variables
13.2 Consumption degree calculation function.)
· Notification Day setting: Warning Remaining Number of Days, Operation Time of
a Day, Notification Interval
· How to Notify setting (maintenance parts): Warning Occurrence, Signal Output
· How to Notify setting (overhaul parts): Warning Occurrence, Signal Output
· ["I/O Signals assignment"]
RT ToolBox3 Predictive maintenance screen (Refer to 3.2.1 Setting how to notify.)
[Parameters] (Refer to 14.2 Consumption degree calculation function
14.2.1 Setting parameters.)
· Maintenance Reset (reset of consumption degree)
· [Notification Pause]
*2