Rockwell Automation 1785-L20C_L40C, D17856.5.14 ControlNet PLC-5 Programmable Controllers User Manual User Manual
Page 17
Chapter 1
Installing Your ControlNet PLCĆ5 Processor
1-9
Replacing the Battery
Replace the lithium battery every year or when the BATT status indicator
is red. For estimated battery lifetimes, see the table below:
Processor
Temperature
WorstĆCase BatteryĆLife Estimates
Power Off 100% Power Off 50%
Battery Duration
➀
PLCĆ5/20C
60
°
C
218 days
1.17 years
3.7 days
25
°
C
1.7 years
3.34 years
15 days
PLCĆ5/40C
60
°
C
105 days
207 days
40 hours
25
°
C
1.3 years
2.57 years
10.8 days
➀
The battery status indicator (BATT) warns you when the battery is low. These durations are
based on the battery supplying the only power to the processorĊpower to the chassis is
offĊonce the status indicator first lights.
Disposing of the Battery
Do not dispose of lithium batteries in a general trash collection when their
combined weight is greater than or equal to 0.5 gram. A single 1770-XYC
battery contains 0.65 grams of lithium. Check your state and local
regulations that deal with the disposal of lithium batteries.
ATTENTION: Follow these precautions:
Do not incinerate or expose the battery to
high temperatures.
Do not solder the battery or leads; the battery
could explode.
Do not open, puncture, or crush the battery. The
battery could explode or toxic, corrosive, and
flammable chemicals could be exposed.
Do not charge the battery. An explosion may result,
or the cell may overheat and cause burns.
Do not short positive and negative terminals together.
The battery will heat up.
Tip
You can insert or remove the
battery without powering down
the processor. If you do not
want to lose your program,
make sure that the processor
is powered when replacing
the battery.