4.2.1
Battery
In order to protect the processor module management information (in the storage memory)
during power failure, the Li batteries are used.
Since the application program information is stored in the non-volatile memories, thus battery
backup is not required.
CAUTION
Use batteries specified by Yokogawa Electric.
A label indicating the expiration date of the battery is attached on the lower part of the pro-
cessor module front cover. This expiration date is valid when the ambient temperature is less
than 30 degree Celsius.
The part number of battery pack is S9185FA.
Recommended replacement cycle of battery: Changes according to the ambient temperature
as follows:
•
Three years if the average ambient temperature is 30 deg. C or less
•
One year and a half if the average ambient temperature is 40 deg. C or less
•
Nine months if the average ambient temperature is 50 deg. C or less
BATTERY LIFE
(AVE.ROOM TEMP 30 °C MAX.)
Date of battery life
Figure 4.2.1-1 Battery Expiration Date Label
SEE
ALSO
For more information about how to replace the battery, refer to:
7.7.1, “Replacing Battery” on page 7-34
<4.2 Processor Module >
4-5
IM 32Q06C10-31E
4th Edition : Jan.30,2015-00
