Emerson PACSystems RX3i User Manual page 51

PACSystems™ RX3i and RSTi-EP CPU Reference Manual
GFK-2222AK
2.3.1.6 Super Capacitor
In the event of loss of system power, the internal super capacitor maintains power long
enough for the CPE100/CPE115 to write its user memory contents to non-volatile storage
(flash) memory.
2.3.1.6.1 Operation
When the CPE100/CPE115 is powered up for the first time, or is in a system that has been
powered down long enough to completely discharge the internal super capacitor, it may
additional require 70 to 75 seconds for it to charge to its operating level. The
CPE100/CPE115 does not provide any status information about the state of internal super
capacitor during power-up.
2.3.1.6.2 Life Expectancy
The super capacitor's life is computed based on unit's ambient temperature and is given
by the below estimates.
2.3.1.7 Product Limitations
This section lists the known limitations and features that are currently not supported by
CPE100/CPE115:
1. SNTP is not supported at the time of publication.
2. C Toolkit is not supported at the time of publication.
3. RDSD is not supported at the time of publication.
4. OPC-UA is not supported at the time of publication.
Timed interrupt blocks are not supported.
Note: The above features may be supported in a subsequent firmware version. Refer to the data
sheet for more information.
CPU Features & Specifications
Surrounding Air
Temperature near Capacitor
10°C
20°C
30°C
40°C
50°C
60°C
70°C
Typical Life Expectancy
(in Years)
15
15
15
15
15
8.1
2.8
Section 2
October 2019
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