Rockwell Automation 1756-SPESMNRMXT GuardLogix Controllers User Manual - Manuel (Page 145)

Rockwell Automation Publication 1756-UM020I-EN-P - August 2012 145
Maintain the Battery Appendix B
When to Replace the Battery When the battery is about 95% discharged, the controller provides the following
warnings:
• The BAT indicator on the front of the controller turns on (solid red).
• A minor fault occurs (type 10, code 10 for the controller).
Replace the Battery This controller contains a lithium battery, which is intended to be replaced
during the life of the product. You must follow specific precautions when
handling or disposing of a battery.
ATTENTION: To prevent your battery from leaking potentially
dangerous chemicals, replace your battery according to the following
schedule, even if the BAT indicator is off.
IMPORTANT Because the GuardLogix controller is a 1oo2 controller (two processors), we
strongly recommend that you replace both controller batteries at the same
time.
Table 54 - Battery Replacement Schedule
If the temperature 2.54 cm
(1 in.) below the chassis is
Replace the battery every
-25…35 °C(-13…95 °F) No replacement required
36…40 °C (96.8…104 °F) 3 years
41…45 °C (105.8…113 °F) 2 years
46…50 °C (114.8…122 °F) 16 months
51…55 °C (123.8…131 °F) 11 months
56…70 °C (132.8…158 °F) 8 months
ATTENTION: The controller uses a lithium battery that contains
potentially dangerous chemicals.
Before handling or disposing of a battery, review Guidelines for Handling
Lithium Batteries, publication
AG-5.4 .
WARNING: When you connect or disconnect the battery, an electrical
arc can occur. This could cause an explosion in hazardous location
installations. Be sure that power is removed or the area is nonhazardous
before proceeding.
IMPORTANT If you remove the battery and later lose power, the project in the controller
will be lost.