For switching the de-energized component 1 to the energized component 2 or connecting the de-energized
component 1 to the equally de-energized component 2 the conditions to be fulfilled correspond with those
stated above.
The associated messages indicating the release via the corresponding condition are as follows:
25 V1> V2<
,
25 V1< V2>
and
25 V1< V2<
.
Via binary input
>25 V1>V2<
,
>25 V1<V2>
and
>25 V1<V2<
, release conditions can be issued externally
provided the synchronization is controlled externally.
Parameter
TSUP VOLTAGE
(address 6111) can be set to configure a monitoring time which requires above
stated release conditions for de-energized connection to be fulfilled at least this time before switching is
allowed.
Direct Command / Blocking
Parameter
Direct CO
can be set to grant a release without performing any checks. In this case switching is
released immediately when initiating the synchrocheck. It is obviously not reasonable to combine
Direct CO
with other release conditions.
If the synchrocheck fails, depending on the type of failure a direct command bypassing any checks may be
issued or not (also see "Plausibility check / SYNC Error").
Via binary input
>25direct CO
this release can also be granted externally.
Blocking the entire synchrocheck is possible via binary input
>BLK 25-1
. The message signaling this condi-
tion is made via
25-1 BLOCK
. When blocking the measurement is terminated and the entire function is reset.
A new measurement can only be performed with a new measurement request.
Via binary input
>BLK 25 CLOSE
it is possible to only block the release signal for closing (
25 CloseRe-
lease
). When blocking is active, measurement continues. The blocking is indicated by the message
25
CLOSE BLK
. When blocking is reset and release conditions are fulfilled, the release signal for closing is issued.
SYNC Function Groups
The 7SJ62 device is provided with only one synchronization function group. The 7SJ64 relay comprises 4
synchronization function groups (SYNC function group 1 to 4) which each contain all setting parameters for
one synchronizer. This generally includes the switchgear component for which the synchronization settings
are to be applied.
However, several SYNC function groups may be used for one point of synchronization/switching object if
synchronismn is to be performed with different parameters. Allocation of switchgear component and SYNC
function group must then be accomplished dynamically (whichever is the function group to operate with) via
one of the binary inputs from
>25-1 act
to
>Sy4 wirks
.
If the assignment to the SYNC groups is clear, the binary inputs are not required.
Selecting one SYNC function group several times, causes output of error message (
25 FG-Error
).
2.21.1.5
2.21.1.6
Functions
2.21 Synchronization Function
SIPROTEC 4, 7SJ62/64, Manual
295
C53000-G1140-C207-8, Edition 08.2016
Summary of Contents for SIPROTEC 4
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