• MUDATA: Indicates when sample sequence needs to be realigned. that is the application soon
needs to be restarted. The signal is raised to 2 s before the application is restarted.
• SYNCH: Indicates that the time quality of the hardware is out of the set value from parameter
synchAccLevel
(
1 μs
,
4 μs
or
unspecified
) and the parameter
AppSynch
is set to
Synch
. In case
of
AppSynch
is set to
NoSynch
the SYNCH output will never go high.
• SMPLLOST: Indicates that more than one sample has been lost/been marked invalid/
overflow/ been marked failed, and the sample has thereafter been substituted. When
SMPLLOST is high, protection is blocked.
• MUSYNCH: Indicates that the MU connected is not synchronized. Received from quality flag in
datastream. No IED setting affects this signal.
• TESTMODE: Indicates that the MU connected is in
TestMode
. Received from quality flag in
datastream. No IED setting affects this signal.
Timeout
TSYNCERR Indicates that there is some timeout on any configured time source or the time quality
is worse than specified in SynchAccLevel. The timeout is individually specified per time source
(PPS, IRIG-B, SNTP etc.) See section
"Time synchronization"
Blocking condition
Blocking of protection functions is indicated by (SAMPLOST is high) or (MUSYNCH is high and
AppSynch
is set to
Synch
) or (SYNCH is high)
Application synch is not required for differential protection based on ECHO mode. A missing PPS
however will lead to a drift between MU and IED. Therefore protection functions in this case will be
blocked.
18.5.7 Technical data
SEMOD172233-1 v1
SEMOD172236-2 v2
Table 847: IEC 61850-9-2LE communication protocol
Functions Value
Protocol IEC 61850-9-2LE
Communication speed for the IEDs 100BASE-FX
18.6 LON communication protocol
IP14420-1 v1
18.6.1 Functionality
M11924-3 v4
An optical network can be used within the substation automation system. This enables
communication with the IED through the LON bus from the operator’s workplace, from the control
center and also from other terminals.
LON communication protocol is specified in LonTalkProtocol Specification Version 3 from Echelon
Corporation and is designed for communication in control networks. These networks are
characterized by high speed for data transfer, short messages (few bytes), peer-to-peer
communication, multiple communication media, low maintenance, multivendor equipment, and
low support costs. LonTalk supports the needs of applications that cover a range of requirements.
Section 18 1MRK 502 066-UUS B
Station communication
1134
Technical manual
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