6 - 5
6 Maintenance
NA-series Programmable Terminal Hardware User’s Manual (V117)
6-
2 Repla
cing
the
Batt
ery
6
6-
2-1 Batter
y R
epla
cement
6-2
Replacing the Battery
The Battery in the NA Unit requires maintenance. (The Battery is for the NA Unit's internal clock.) This
section describes how to replace the Battery.
It is used to maintain the clock information in the NA Unit while the power supply is OFF. The clock will
stop if there is no Battery or the Battery has been discharged completely.
Precautions for Correct Use
The Battery will loose its charge faster at high ambient temperatures.
When the Battery voltage drops below a certain level, the
_HMI_IsBatteryLow
(Low Battery Voltage)
system-defined variable changes to True. When this happens, E_SYS_015 occurs. This error only
occurs when the battery voltage falls below a certain level during operation. As such, if the battery volt-
age falls below this level during startup, this error will not occur. To check falling battery voltage with
certainty, incorporate a means for monitoring the system variable
_HMI_IsBatteryLow
.
If the indicator flashes, connect the Sysmac Studio and see if the
_HMI_IsBatteryLow
system-defined variable in
the Sysmac Studio is True. If it is True, first check the Battery connection in the NA Unit. If the Battery in the NA
Unit is properly connected, replace the Battery with a new one as soon as possible.
Even if
_HMI_IsBatteryLow
changes to True, clock information can be retained by ensuring that the
power supply to the NA Unit is not turned OFF.
Use the following procedure to replace the Battery when the previous Battery has become completely
discharged. Refer to
2-1-1 Components and Functions
on page 2-2 for the details on replacing Battery.
Precautions for Safe Use
• Do not touch the packaging part of the circuit board with your bare hands. Discharge any
static electricity from your body before handling the board.
• Do not use any battery if strong impact is applied to it (e.g. by dropping on the floor) because
such a battery may cause a leakage.
• Apply power for at least five minutes before changing the battery. Mount a new battery within
five minutes after turning OFF the power supply. If power is not supplied for at least five min-
utes, the clock data may be lost. Check the clock data after changing the battery.
• Do not dismantle a battery nor let it short-circuit.
• Do not apply an impact with the lithium battery, charge it, dispose it into a fire, or heat it.
Doing either of them may cause an ignition or a bursting.
• Turn ON the power after replacing the Battery for an NA Unit that has not been used for a
long time. Leaving the NA Unit unused again without turning ON the power even once after
the Battery is replaced may result in a shorter Battery life.
• The following is required by UL standards:
The Battery inside this product is not user replaceable. Replacement of the lithium battery
needs to be done by a trained technician.
6-2-1
Battery Replacement
Purpose of the Battery
Low Battery Indicators
Replacement Procedure
Summary of Contents for OMRON NA Series
Page 8: ...Sections in this Manual 6 NA series Programmable Terminal Hardware User s Manual V117...
Page 12: ...CONTENTS 10 NA series Programmable Terminal Hardware User s Manual V117...
Page 34: ...Revision History 32 NA series Programmable Terminal Hardware User s Manual V117...
Page 82: ...3 Installation and Wiring 3 22 NA series Programmable Terminal Hardware User s Manual V117...
Page 164: ...5 Troubleshooting 5 18 NA series Programmable Terminal Hardware User s Manual V117...
Page 179: ...I 1 I NA series Programmable Terminal Hardware User s Manual V117 Index...
Page 181: ......
