
7.2 Alarm History Display (Fn000)
7-3
7
Utili
ty Fu
ncti
ons (Fn
)
7.2
Alarm History Display (Fn000)
This function displays the last ten alarms that have occurred in the servo drive.
The latest ten alarm numbers and time stamps
*
can be checked.
∗
Time Stamps
A function that measures the ON times of the control power supply and main circuit power supply in 100-ms
units and displays the total operating time when an alarm occurs. The time stamp operates around the clock for
approximately 13 years.
<Example of Time Stamps>
If 36000 is displayed,
3600000 [ms] = 3600 [s] = 60 [min] = 1 [h]
Therefore, the total number of operating hours is 1 hour.
(1) Preparation
There are no tasks that must be performed before displaying the alarm history.
(2) Operating Procedure
Use the following procedure.
Note:
• If the same alarm occurs after more than one hour, the alarm will be saved. If it occurs in less than one hour, it
will not be saved.
• The display "
.---" means no alarm occurs.
• Delete the alarm history using the parameter Fn006. The alarm history is not deleted when the alarm reset is exe-
cuted or the control power supply of the multi-winding drive unit is turned OFF.
Step
Display after Operation
Keys
Operation
1
Press the MODE/SET Key to select the utility function.
If a number other than Fn000 is displayed, press the UP
Key or DOWN Key to select Fn000.
2
Press the DATA/SHIFT Key for approximately one sec-
ond. The latest alarm data is displayed.
3
Press the DOWN Key to display one older alarm data.
(To display one newer alarm data, press the UP Key.)
The higher the far-left digit, the older the alarm data.
4
Press the DATA/SHIFT Key.
The lower four digits of Time Stamp are displayed.
5
Press the DATA/SHIFT Key.
The middle four digits of Time Stamp are displayed.
6
Press the DATA/SHIFT Key.
The higher two digits of Time Stamp are displayed.
7
Press the DATA/SHIFT Key.
The alarm number is displayed again.
8
Press the DATA/SHIFT Key for approximately one sec-
ond. "Fn000" is displayed again.
MODE/SET
DATA/
MODE/SET
DATA/
MODE/SET
DATA/
Alarm Code
See the alarm
table.
Alarm Sequence
Number
The higher the
number, the older
the alarm data.
MODE/SET
DATA/
MODE/SET
DATA/
MODE/SET
DATA/
MODE/SET
DATA/
MODE/SET
DATA/
MODE/SET
DATA/