Siemens siprotec 7SA6, Manual

Page: 187 / 876

Configuration
5-59
7SA6 Manual
C53000-G1176-C156-2
To open the
Time Synchronization & Format
window, the user should double-
click on
Time Synchronization
. See Figure 5-57.
Figure 5-57 Dialogue box for time synchronization and format in DIGSI
®
4
Here you may select the time standard for internal time stamping. For the master
device you may select from the following modes:
The RTC continues running, even when the auxiliary voltage is temporary absent, by
means of an internal battery. During the device powering up, or if the auxiliary voltage
Table 5-7 Operating modes for time synchronization
Item Operating Mode Explanations
1 I
nternal Clock
Internal synchronization using RTC
2
I
E
C 60870–5–103
External synchronization using the system interface and the IEC 60870–
5–103 protocol
3
I
R
IG B Time signal
External synchronization using IRIG B
4
DC
F
77 Time signal
External synchronization using DCF 77
5 SIMEAS time signal
Sync.
B
ox
External synchronization using SIMEAS Sync. Box
6
Pul
s
e via binary input
External synchronization with pulse via binary input
7 Fieldbus External synchronization via fieldbus
8 Internal or Timing Master Only for devices with digital communication way:
as above No. 1 to 7; normally, however, the time is synchronized by the
absolute timing master. Only when the protection data communication
with the absolute time master fails, is the synchronization accomplished
via the indicated source.
9
I
E
C 60870
or Timing Master
10
I
R
IG B
or Timing Master
11
DC
F
77
or Timing Master
12
Sync.
B
ox
or Timing Master
13
Binary input
or Timing Master
14 Fieldbus or Timing Master