19.4  Battery Voltage Low Detection and Battery Replacement
 
19 - 4
17
ADDITION TIMES RESET 
FOR MAINTENANCE TIME 
NOTIFICATION
18
INSTALLATION OF 
COREOS, BOOTOS AND 
STANDARD MONITOR OS
19
MAINTENANCE AND 
INSPECTION
20
TROUBLESHOOTING
APPENDICESINDEX
19.4 Battery Voltage Low Detection and Battery 
Replacement
1 Low battery voltage detection and replacement
The battery is used for backing up the present time or the maintenance time notification data.
It is recommended that you replace battery periodically.
Refer to the following for the replacement procedure.
8.11 Battery
The battery voltage low detection can be confirmed by the utility and system alarm.
Refer to the following for details of the battery status display by the utility.
12. CLOCK SETTINGS AND BATTERY STATUS DISPLAY (TIME SETTING AND 
DISPLAY)
By using system alarm, the message that notifies the battery voltage has decreased can be displayed at 
the battery voltage low on the screen of the GOT.
To display the following message on system alarm, set [Battery alarm display] to "ON".
11.1.1 Display setting functions
Refer to the following for details of the system alarm display.
• GT Designer3 Version1 Screen Design Manual (Functions) (10. ALARM)
• GT Designer2 Version
 Screen Design Manual (8. ALARM)
Battery replacement timing
When detecting voltage low, replace the battery immediately.
Data can be saved for 14 days after the battery voltage low detection and cannot be 
saved after that.
8.11.4 Battery life
System alarm
500  Warning! Built-in battery voltage is low.