9.2.2
Function block
OPENPOS
POSOPEN
52-TOC,29DS
POSCLOSE
CLOSEPOS
OKPOS
GUID-50D8D3AB-1042-490B-B3C0-74D37475C86B V1 EN
Figure 489:
Function block
OPENPOS
POSOPEN
29GS
POSCLOSE
CLOSEPOS
OKPOS
GUID-BDAE20F6-DDD2-4577-ADD8-B7F85A516E72 V1 EN
Figure 490:
Function block
9.2.3
Functionality
The functions 52-TOC, 29DS and 29GS indicate remotely and locally the open, close and
undefined states of the disconnector and grounding switch. The functionality of both is
identical, but each one is allocated for a specific purpose visible in the function names. For
example, the status indication of disconnectors or circuit breaker truck can be monitored
with the 52-TOC, 29DS function.
The functions are designed according to the IEC 61850-7-4 standard with the logical node
XSWI.
9.2.4
Operation principle
Status indication and validity check
The object state is defined by the two digital inputs
POSOPEN
and
POSCLOSE
, which are
also available as outputs
OPENPOS
and
CLOSEPOS
together with the
OKPOS
according
. The debounces and short disturbances in an input are eliminated by filtering.
The binary input filtering time can be adjusted separately for each digital input used by the
function block. The validity of digital inputs that indicate the object state is used as
additional information in indications and event logging.
Section 9
1MAC059074-MB A
Control functions
972
615 series ANSI
Technical Manual
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