C h a p t e r C
C h a p t e r C
Maintenance Mode
108
W301-0411E
Fig. 2.13.2
2.13 Latest Overload History Display
Displays the latest overload history that is stored in the AML. In the maintenance menu of Fig. 1.3.1, select "New
History," and press the <
> key to display the latest overload history shown in Fig. 2.13.1.
Pressing the <
> (forward) displays the next newest history item, and pressing the <
> (back) displays the
history item of previous one.
To go back to the maintenance main menu, press the <
> key.
Fig. 2.13.1 Latest overload history display
<Description of display contents>
The maximum of 100 history items are stored.
No.:
Number of display item/Number of stored items
Moment ratio:
Load moment ratio of that time
Date and time:
Date on which the operation was performed
[Format: Year (4 digits).Month (3 letters).Day (2 digits)]
Stored information: Displays the operation status and operation posture with which the operation was
performed.
<Storing condition>
During a period starting from when Load moment ratio calculated by the AML becomes 110% or more until it
becomes less than 110%, the data D is temporarily stored. Then, after 5 seconds have elapsed since the
moment ratio becomes less than 100%, the data is actually stored. If the moment ratio becomes 110% or more
before the elapse of 5 seconds, the status returns to the temporary storage of maximum value (refer to the Fig.
2.13.2).
However, the data will not be stored in the cases bellows:
(1) Rated capacity = 0 t (including cases with no capacity and boom full retraction switch abnormality)
(2) Elevation angle is near the raising stroke end (angle differs depending on the model)
(3) Detector abnormality is currently occurring (Error code: E2003 to E2031)
Load moment ratio
Temporary storage
of maximum value
starts.
Returns to the temporary
storage of maximum value
state again.
Stores the maximum
moment ratio.
Time
5 s
Maximum
moment ratio
