Rockwell Automation 1794-L34 FlexLogix Controller System User Manual - Manual (Page 99)

Publication 1794-UM001G-EN-P - January 2007
Maintain the Battery 99
Use the off-time percentage you calculated with the following table to
determine battery life:
Replacing a Battery Because the controller uses a lithium battery, you must follow specific
precautions when handling or disposing a battery.
1. Turn off power to the FlexLogix controller.
2. Does the existing battery show signs of leakage or damage?
Worst-case battery life estimate:
Catalog number: Temperature: Power off 100%: Power off 50%: Battery duration after
the LED turns on:
(1)
1794-L34 60 ° C 1.8 years 3.6 years 3 days
25 ° C 6.7 months 1.1 year 3 days
(1) The battery indicators (BATTERY) warns you when the battery is low. These durations are the amounts of time the battery will retain controller memory from
the time the controller is powered down after the LED first turns on.
IMPORTANT
If the BATTERY LED turns on when you apply power to the
controller, the battery life may be less than the table above
indicates. Some of the warning time may have been used while
the controller was off and unable to turn on the BATTERY LED.
ATTENTION
The controller uses a lithium battery, which contains potentially
dangerous chemicals. Before handling or disposing a battery,
review Guidelines for Handling Lithium Batteries, publication
AG-5.4.
If: Then:
Yes Before handling the battery, review Guidelines for Handling Lithium
Batteries, publication AG-5.4.
No Go to the next step.