Micom P631, Technical Manual, Page: 139 / 638

Q6Z0152B
MAIN:
Date
[ 003 090 ]
MAIN:
Time of day
[ 003 091 ]
MAIN:
Time switching
[ 003 095 ]
MAIN:
Time switching
MAIN:
Time tag
306 021
Setting
0: Standard time
1: Daylight saving time
MAIN:
Min-pulse clock EXT
[ 060 060 ]
Fig. 3-57: Date/time setting and clock synchronization with minute pulses presented at a binary signal input.
3.12.10.1 Priority Control of Time Synchronization
The protection device provides several ways of synchronizing the internal clock:
●
Telegram with the time of day via the communication interface COMM1/IEC
(full time)
●
Telegram with the time of day via the communication interface COMM2/PC
(full time)
●
IRIG-B Signal (IRIGB; time of day only)
●
Impulse every minute via a binary signal input (MAIN), see Fig. 3-57, (p. 3-
83) and the preceding section.
A primary and a backup source for time of day synchronization may be set,
where both provide the four options listed above.
MAIN: Prim.Source TimeSync
MAIN: BackupSourceTimeSync
With this feature synchronization occurs continuously from the primary source as
long as time synchronization telegrams are received within a time-out period set
at MAIN: Time sync. time-out.
When selecting the time telegram via IEC as the primary source the device will
expect time synchronization telegrams from server SNTP 2 after server SNTP 1
has become defective, before it will switch over to the backup source.
Time synchronization occurs solely from the primary source when the time-out
stage is blocked.
3 Operation
P631
P631/EN M/R-11-C // P631-310-650 3-83