Siemens 7SJ82, Manual

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Parameter Value Description
local
Local time zone and daylight saving time are considered as time zone offsets to
GMT.
UTC
Time format according to UTC (universal time)
Parameter: Time source 1,Time source 2
•
Default setting
Time source 1
=
none
,
Time source 2
=
none
With the
Time source 1
and
Time source 2
parameters, you can configure an external timer. The
prerequisite is to have the corresponding hardware configuration of the communication interfaces of your
SIPROTEC 5 device. This is listed as a prefix when making a selection in DIGSI 5.
Parameter Value Description
none
The time source is not configured.
IRIG-B
Time synchronization by an external GPS receiver:
SIPROTEC 5 devices support several protocol variants of the IRIG-B standards:
•
IRIG-B 002(003)
The control function bits of the signal are not occupied. The missing year is
formed from the current device time. In this case, it is possible to set the
year via the online access in DIGSI 5.
•
IRIG-B 006(007)
The bits for the calendar year are not equal to 00. The calendar year is set
automatically by the time protocol.
•
IRIG-B 005(004) with extension according to IEEE C37.118-2005
If, in the time signal, other control function bits are occupied in addition to
the calendar year, then the device takes the additional information into
consideration for leap seconds, daylight saving time, time offset (zone,
daylight saving time) and time accuracy.
Time zone time source 1
or
Time zone time source 2
: The
value of this setting is not evaluated by the device, since this protocol
either transmits or in the case of local time, specifies the appropriate offset
to UTC in each set time telegram.
DCF77
Time synchronization by an external DCF 77 receiver
Time zone time source 1
or
Time zone time source 2
=
local
Please note: There are also clocks that generate a DCF 77 signal representing
UTC. In this case, UTC must be set.
PI
The time synchronization takes place via the protection interfaces configured
for your SIPROTEC 5 device. Here, the timing master takes over the time
management. Signal-transit times of the protection interface communication
are calculated automatically.
Time zone time source 1
or
Time zone time source 2
=
UTC
A slave that receives a time or a SIPROTEC 5 master, receives its system time
kept in UTC.
SNTP
The time synchronization is done via the Ethernet service SNTP (SNTP server or
via IEC 61850).
SIPROTEC 5 devices support both Edition1 and Edition2 in accordance with
IEC 61850-7-2. In Edition2, the logical attributes LeapSecondsKnown, ClockFai-
lure, ClockNotSynchronized, and the value TimeAccuracy are maintained in
each time stamp. For Edition1, these signals contain default settings. Thus, the
interoperability for substation automation technology is ensured for both
editions!
The SNTP service must be enabled during configuration of Ethernet interfaces
so that it is available as an option for the time synchronization.
Time zone time source 1
or
Time zone time source 2
=
UTC
System Functions
3.6 Date and Time Synchronization
150 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017