1932   DO Str in required for FXOT and FXUT

Created: 18 Jul 2024

Status: Approval (Future Improvement)

Part: Part 7-4 (2020; Edition 2.1)

Links:

Page: 84

Clause: 6.2.9.3 <<abstract>> LN: Threshold Name: Threshold

Paragraph: Table 19 – Data objects of ThresholdLN

Issue

For some automation functions, FXUT is used and it requires DO Str, start information status, when threshold is reached. This is also required for FXOT.
This requirement is similar to any other Protection LN with threshold where there is Str.
In addition, it seems inconsistent to have StrVal, StrChr, OpDlTmms and RsDlTmms without having any start information, as it is the case in ThresholdLN.

Proposal

Add/Move DO Str to abstract ThresholdLN, so it is available for FXOT and FXUT.

Discussion Created Status
changed to approval (future improvement). 04 Sep 24 Approval (Future Improvement)
Proposal: Move to future improvement, there are no interoperability issues. 24 Jul 24 Discussion (red)
Accepted, open for discussion.

Proposal to be in line with other P-LNs and to ensure no compatibility issues it should be optional.

Data object name: Str
Common data class: ACD
T: No
Explanation: If its ‘general’=true, the start condition has been detected and its direction may be available in its
‘dirGeneral'.
PresCond nds/ds: O / O 		23 Jul 24 Accepted

 

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