ABB Relion 670 Series Applications Manual page 486

Section 20
Basic IED functions
The function input to be used for minute-pulse synchronization is called BININPUT. For a description of
the BININPUT settings, see the Technical Manual.
The system time can be set manually, either via the local HMI or via any of the communication ports. The
time synchronization fine tunes the clock (seconds and milliseconds).
The parameter SyncMaster defines if the IED is a master, or not a master for time synchronization within
a Substation Automation System, for IEDs connected in a communication network (IEC 61850-8-1). The
SyncMaster can have the following values:
• Disabled
• SNTP -Server
IEEE 1588 (PTP)
Precision Time Protocol (PTP) is enabled/disabled using the Ethernet configuration tool /ECT) in
PCM600.
PTP can be set to On,Off or Slave only. When set to Slave only the IED is connected to the PTP-group
and will synchronize to the grandmaster but cannot function as the grandmaster.
A PTP-group is set up by connecting the IEDs to a network and enabling PTP. To set one IED as the
grandmaster change Priority2 to 127 instead of the default 128.
IEC16000089 V1 EN-US
Figure 240: Enabling PTP in ECT
The PTP VLAN tag must have the same value in station clock and in the IED. The default value is set to
0.
The PTP VLAN tag does not need to be the same on all access points in one IED. It is possible to mix as
long as they are the same for all devices on each subnet.
480
Set the course time synchronizing source (CoarseSyncSrc) to Disabled when GPS time
synchronization of line differential function is used. Set the fine time synchronization
source (FineSyncSource) to GPS. The GPS will thus provide the complete time
synchronization. GPS alone shall synchronize the analogue values in such systems.
The IED supports SNTPv4 (RFC2030).
All protection functions will be blocked if the AppSynch parameter is set to Synch while
there is no 9-2 synchronization source. For more information please refer to the
"IEC/UCA 61850-9-2LE communication protocol" section.
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