Chapter 2. CPU Features & Specifications
GFK-2222AD April 2018 75
Real-Time Clock Battery CPE302/CPE305 & CPE310
The CPE302, CPE305 and CPE310 are shipped with a
real-time clock (RTC) battery (IC690ACC001) installed
(Figure 25), and with an isolation barrier on the
battery. Remove the isolation barrier via its pull-tab
before installing the CPE302, CPE305 or CPE310
module; otherwise the battery will not function.
There are no diagnostics or indicators to monitor RTC
battery status.
The RTC battery has an estimated life of 5 years and
must be replaced every 5 years on a preventative
maintenance schedule.
If the RTC battery fails, the CPU date and time is reset
to 12:00 AM, 01-10-2000 at startup. The CPU operates
normally with a failed or missing RTC battery; only the
initial CPU TOD clock information will be incorrect.
Note: Battery replacement on CPE330 is
different. Refer to Figure 20.
Figure 25: Accessing Real-Time Clock Battery
(CPE302, CPE305 and CPE310)
Replacing the Real-Time Clock Battery in CPE302/CPE305/CPE310
The replacement battery must be IC690ACC001 from GE Automation & Controls, or an equivalent, such
as Rayovac Lithium BR2032 Coin Cell 3V 190mAh -40°C to +85°C.
Warning
Use of a different type of battery than that specified here may
present a risk of fire or explosion.
Battery may explode if mistreated. Do not recharge,
disassemble, heat above 100°C (212°F), or incinerate.
Caution
To avoid damage from electrostatic discharge, use proper precautions
when performing these procedures:
â–ª Wear a properly functioning antistatic strap and be sure that you are
fully grounded. Never touch the printed circuit board, or components
on the board, unless you are wearing an antistatic strap.
â–ª Any surface upon which you place the unprotected circuit board
should be static-safe, facilitated by antistatic mats if possible.
Extra caution should be taken in cold, dry weather, when static charges can
easily build up.
To Next Page
Loading...
Need help?
General
