Siemens SIPROTEC 6MD665, Manual, Page: 73 / 222

2.7 Circuit breaker synchronisation
59
6MD665 Manual
C53000-G1876-C103-3
Table 2-10 Input measuring channels, function blocks FB_SYNC 1 to 5
Output indications Status messages are output from the synchronisation function. The status messages
are output in the context of the active FB_SYNC function module.
Table 2-11 Output messages of the synchronisation function
Code Explanation
“Sy1 ChU1” Channel of voltage V1.
“Sy1 ChU2” Channel of voltage V2.
Code Explanation
“Sync. CloseRel” Synchronisation conditions exist, switching is enabled.
ON: This immediately leads to a switching command (triggering of
command relays).
“Sync. Error” Error, problems within the synchronisation function.
“Sync. block” Blocking by external event.
“Sync.MonTimeExc” Monitoring time exceeded
“Sync. synchron” The networks meet the synchronisation conditions for asynchronous
or synchronous networks.
“Sync. U1> U2<” Condition V2 dead exists.
“Sync. U1< U2>” Condition V1 dead exists.
“Sync. U1< U2<” Condition V1 & V2 dead exists.
“Sync. Vdiff>” The difference voltage amount is greater than the setting.
The corresponding SVK_Udiff measured-value indication is transmit-
ted additionally.
“Sync. fdiff>” The difference voltage amount is greater than the setting.
The corresponding SVK_Fdiff measured-value indication is transmit-
ted additionally.
“Sync.
α
diff>” The amount of the difference angle is greater than the setting.
The corresponding SVK_Fdiff measured-value message is transmit-
ted additionally, provided that the Fdiff < FdiffSyn condition is met.
“Sync. f1>>” The f1 frequency is greater than the fmax setting.
The corresponding SVK_F1 measured-value message is transmitted
additionally.
“Sync. f1<<” The f1 frequency is smaller than the fmin setting.
The corresponding SVK_F1 measured-value message is transmitted
additionally.
“Sync. f2>>” The f2 frequency is smaller than the fmax setting.
The corresponding SVK_F2 measured-value message is transmitted
additionally.
“Sync. f2<<” The f2 frequency is smaller than the fmin setting.
The corresponding SVK_F2 measured-value indication is transmit-
ted additionally.
“Sync. U1>>” The U1 voltage is greater than the Vmax setting.
The corresponding SVK_Usyn1 measured-value indication is trans-
mitted additionally.