ABB Relion 670 Series Applications Manual page 489
Bay control, version 2.1 ansi
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Also See for Relion 670 Series:
- Technical manual (1432 pages) ,
- Technical reference manual (1232 pages) ,
- Applications manual (944 pages)
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1MRK 511 358-UUS A
Section 20
20.1
Authority status ATHSTAT
20.1.1
Application
Authority status (ATHSTAT) function is an indication function block, which informs about two
events related to the IED and the user authorization:
•
the fact that at least one user has tried to log on wrongly into the IED and it was blocked (the
output USRBLKED)
•
the fact that at least one user is logged on (the output LOGGEDON)
The two outputs of ATHSTAT function can be used in the configuration for different indication and
alarming reasons, or can be sent to the station control for the same purpose.
20.2
Self supervision with internal event list INTERRSIG
20.2.1
Application
The protection and control IEDs have many functions included. The included self-supervision with
internal event list function block provides good supervision of the IED. The fault signals make it
easier to analyze and locate a fault.
Both hardware and software supervision is included and it is also possible to indicate possible
faults through a hardware contact on the power supply module and/or through the
communication.
Internal events are generated by the built-in supervisory functions. The supervisory functions
supervise the status of the various modules in the IED and, in case of failure, a corresponding
event is generated. Similarly, when the failure is corrected, a corresponding event is generated.
Apart from the built-in supervision of the various modules, events are also generated when the
status changes for the:
•
built-in real time clock (in operation/out of order).
•
external time synchronization (in operation/out of order).
Events are also generated:
•
whenever any setting in the IED is changed.
The internal events are time tagged with a resolution of 1 ms and stored in a list. The list can store
up to 40 events. The list is based on the FIFO principle, that is, when it is full, the oldest event is
Application manual
Security
Section 20
Security
SEMOD158575-1 v2
SEMOD158527-5 v3
IP1721-1 v2
M12625-3 v9
483
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