Toshiba GR200 Series Instruction Manual page 333

Time Synchronization
4.7.3
The synchronization function can run when a synchronized signal is provided for respective
IEDs; the user should select one of the following synchronization methods using the setting
[Time_Sync_Src]:
 SNTP method
 IRIG-B method
 Binary Input (BI) method

Modbus commination method
 IEC103 method
Synchronization using SNTP
(i)
Example of SNTP synchronization
The SNTP method is possible when IEDs connect with time-servers. Figure 4.7-3 exemplifies
two servers are connected with the IEDs using the LAN.
LAN
Figure 4.7-3 Two time servers connected on the LAN
Setting procedure
The user should make the following steps in respective IEDs.
1) Set SNTP for the setting [Time Sync Src]; then set On for the setting [SNTP].
2) Set the address of a time server using settings [Server1]. The settings [Server2],
[Server3], and [Server4] are provided for other time-servers.
3) Check that the SNTP is shown under the ActivSyncSrc, as shown in Figure 4.7-4.
4) Check to see that the time zone and the DST are set correctly (see 4.7.4 and 4.7.5).
Clock
10:00
[Time]
2012-11-21 10:00:05
[Format]
YYYY-MM-DD HH:mm:ss
[ActiveSyncSrc]
SNTP
Table 4.7-1 Settings for the SNTP synchronization
Setting item
TimeSyncSrc SNTP / BI / MODBUS / IRIG-B / IEC103
SNTP
Server1 000.000.000.000–255.255.255.255
Server2 000.000.000.000–255.255.255.255
Server3 000.000.000.000–255.255.255.255
Server4 000.000.000.000–255.255.255.255
Time server1
IED_1 IED_2
1/2
+
Check "SNTP" being shown under ActiveSyncSrc.
>
Figure 4.7-4 Time setting for SNTP
Range
Off /On
- 319 -
Time server2
.............
IED_n
Contents
Selection of sync method
Operation of SNTP
Setting for Time server 1
Setting for Time server 2
Setting for Time server 3
Setting for Time server 4
Centralized GRB200
(Soft: 030, 031, 032, 033, 034)
6F2S1931 (0.20)
Setting example
SNTP
()On
197.1.23.11
000.000.000.000
000.000.000.000
000.000.000.000