Issue
How is the Real Time Clock (RTC) maintained when a Automation Server loses power since there is no battery on the AS.
Product Line
EcoStruxure Building Operation
Environment
- Automation Server (AS-P, AS-B, AS)
- Real-time clock
Cause
Documentation
Resolution
Each Automation Server has a dedicated capacitor that backs up the RTC chip. Please consult the tables below or use the Webhelp links and search for 'Real-time clock':-
| AS-P Real-time clock | |
|
Accuracy in runtime mode |
NTP server |
|
Accuracy in backup mode, at 25 °C (77 °F) |
+/-52 seconds per month |
|
Backup time, at 25 °C (77 °F) |
10 days |
| AS-B Real-time clock | |
|
Accuracy in runtime mode |
NTP server |
|
Accuracy in backup mode, at 25 °C (77 °F) |
+/-52 seconds per month |
|
Backup time, at 25 °C (77 °F) |
10 days |
| AS Real-time clock | |
|
Accuracy, at 25 °C (77 °F) |
47 to +73 seconds per month |
|
Backup time, at 25 °C (77 °F) |
30 days |
