The parameter SyncMaster defines if the IED is a master, or not a master for time
synchronization in a system of IEDs connected in a communication network
(IEC61850-8-1). The SyncMaster can have the following values:
• Disabled
• SNTP -Server
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.
HWSyncSrc: This parameter must not be set to Disabled if AppSynch is set to Synch. If
set to Disabled the time quality in the IED will never reach SyncAccLevel and some
functions are blocked. See section "IEC 61850-9-2LE communication protocol" in
section "Station communication".
AppSynch: If this parameter is set to Synch, some functions are blocked, see section
"IEC 61850-9-2LE communication protocol" in section "Station communication", if
the time quality is worse than the limit set by SyncAccLevel.
SyncAccLevel: If this parameter is set to Unspecified, time quality will always be not
sufficient, thereby some functions are blocked.
Process bus IEC 61850-9-2LE synchronization
For the time synchronization of the process bus communication (IEC 61850-9-2LE
protocol) an optical PPS or IRIG-B signal can be used. This signal should emanate
from either an external GPS clock, or from the merging unit.
An optical PPS signal can be supplied to the optical interface of the IRIG-B module.
3.4.2.3 Setting parameters
Path in the local HMI is located under Main menu/Setting/Time
Path in PCM600 is located under Main menu/Settings/Time/Synchronization
1MRK504116-UUS C Section 3
IED application
77
Application manual
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