
33
Real-time clock with external time
synchronization (TIME)
Chapter 3
Common functions
Table 25:
Setting parameters for the time synchronization source selector function
1.5
Technical data
Table 26:
TIME - Time synchronisation
Parameter
Range
Default
Unit
Description
SYNCSRC
0-5
0
-
Selects the time synchronization source:
0: No source. Internal real time clock is
used without fine tuning.
1: LON bus
2: SPA bus
3: IEC 60870-5-103 bus
4: Minute pulse, positive flank
5: Minute pulse, negative flank
Function
Accuracy
Time tagging resolution
1 ms
Time tagging error with synchronisation once/60 s
±
1.5 ms
Time tagging error without synchronisation
±
3 ms/min
Summary of Contents for REL 551-C1*2.5
Page 1: ...Technical reference manual ProtectIT Line differential protection terminal REL 551 C1 2 5 ...
Page 23: ...14 Introduction to the technical reference manual Chapter 1 Introduction ...
Page 39: ...30 Technical data Chapter 2 General ...
Page 63: ...54 Blocking of signals during test BST Chapter 3 Common functions ...
Page 71: ...62 Line differential protection phase segregated DIFL Chapter 4 Line differential protection ...
Page 89: ...80 Thermal phase overload protection THOL Chapter 5 Current ...
Page 101: ...92 Event function EV Chapter 7 Logic ...
Page 163: ...154 Terminal diagrams Chapter 11 Diagrams Figure 39 REL 551 C1 with DC switch ...