Siemens SENTRON PAC2200CLP, Product Manual, Page: 25 / 130

Description
2.3 Functions for delimiting third-party quantities according to §62b Par. 1 of the Renewable Energy Act
PAC2200CLP
Equipment Manual, 06/2021, L1V30820585B-02
23
Scenario Effects
3 Time in the event of a power failure As the device is supplied by the measuring voltage, it ceases to operate in this
case. However, the internal clock continues to be supplied by a buffer capacitor
and the time continues to run internally for 72 hours. No entries are made in the
load profile memory or the logbook.
4 Time when power is restored after
a power failure
After the device has rebooted, it attempts to synchronize its internal device clock
time with the date and time of the SNTP server defined in the settings. An ad-
justment is only necessary if the device operates beyond the power reserve. The
power reserve (72h) restarts after every successful synchronization.
Case 1: Power failure and restoration take place within one demand period. The
flags "short period" (FLAG_QUALITY_SHORT_PERIOD) and "power failure"
(FLAG_QUALITY_AUXPOWER_FAIL) are set. The demand period is valid.
Case 2: Power failure and restoration take place within one demand period. The
power reserve of 3 days since the last time synchronization has expired. The
device continues the started period. The flags "short period"
(FLAG_QUALITY_SHORT_PERIOD), "power failure"
(FLAG_QUALITY_AUXPOWER_FAIL) and "time uncertain"
(FLAG_QUALITY_TIME_UNSECURE) are set. The demand period is invalid.
Case 3: Power failure and restoration do not take place within one demand peri-
od. The power reserve of 3 days since the last time synchronization has not ex-
pired. The device finishes the demand period which started before the power
failure. The time stamp originally intended for this period is entered. The flags
"short period"
(FLAG_QUALITY_SHORT_PERIOD) and "power failure"
(FLAG_QUALITY_AUXPOWER_FAIL) are set. The demand period is valid. The flags
"short period" (FLAG_QUALITY_SHORT_PERIOD) and "power failure"
(FLAG_QUALITY_AUXPOWER_FAIL) are set for the newly started demand period.
Case 4: Power failure and restoration do not take place within one demand peri-
od. The power reserve of 3 days since the last time synchronization has expired.
The device finishes the demand period which started before the power failure.
The time stamp originally intended for this period is entered. The flags "short
period" (FLAG_QUALITY_SHORT_PERIOD), "power failure"
(FLAG_QUALITY_AUXPOWER_FAIL) and "time uncertain"
(FLAG_QUALITY_TIME_UNSECURE) are set. The demand period is invalid. The
flags "short period" (FLAG_QUALITY_SHORT_PERIOD), "power failure"
(FLAG_QUALITY_AUXPOWER_FAIL) and "time uncertain"
(FLAG_QUALITY_TIME_UNSECURE) are set for the newly started demand period.