Battery Replacement; Battery Replacement Procedure - Omron RX Series User Manual

8 Maintenance
8-1

Battery Replacement

The LCD Digital Operator contains a battery, which is a service part. This built-in battery is used as a
backup for the clock function of the LCD Digital Operator. Below is the procedure for replacing this part.
Purpose of the Built-in Battery
This LCD Digital Operator has a built-in real time clock IC for the date and time information. When the
external power supply is OFF, the power is supplied from this built-in battery to update the date and
time information.
If the battery life expires, the date and time information is not updated when power supply to the LCD
Digital Operator is OFF. In this case, the date and time information stored in the real time clock IC is
reset to the default value (THU 00:00, January 1, 2009) when the power supply to the LCD Digital
Operator is turned ON. Therefore, when you turn ON the LCD Digital Operator for the first time after
purchase or battery replacement, set the correct time and date in the Option Mode. Otherwise, the LCD
Digital Operator does not show the date and time information correctly in the Trip Mode, Read Mode,
and Write Mode.
Except for the current date and time display, a battery voltage drop will not affect the normal operation
of the LCD Digital Operator.
Precautions for Safe Use
• If the clock command is used in Drive Programming, an unexpected operation may occur due
to weak battery. Take measures such as detecting a weak battery by a check that the clock
data returns to the initial setting and stopping the Inverter or programs. When the LCD Digital
Operator is removed or disconnected, Drive Programming is in a waiting status by the clock
command.

Battery Replacement Procedure

1
Turn OFF the Inverter power supply.
2
Remove the LCD Digital Operator from the Inverter, if installed on the Inverter.
Disconnect the cable from the LCD Digital Operator, if connected via cable.
8 - 2 LCD Digital Operator User's Manual (I579)