ABB RELION REX640 Technical Manual page 273

1MRS759142 F
If a rising edge tag is detected locally, and the status of the nonvolatile variable
TAG_SOURCE is "None", the tag is locally activated. TAG_SOURCE changes to "Local"
while TAG_ON is set to TRUE and TAG_OFF to FALSE.
If a rising edge tag is detected locally, and the status of TAG_SOURCE is "Local", the
tag is locally deactivated. TAG_SOURCE changes to "None" while TAG_ON is set to
FALSE and TAG_OFF to TRUE.
When TAG_SOURCE is "Remote" and the
only", all local commands are prohibited. However, when the
setting is "Untag Loc or Rem", deactivation can be done locally.
Remote tag
Remote tag is activated or deactivated on rising edge detection through a
communication channel in remote mode.
If a rising edge tag is detected remotely, and the status of the nonvolatile variable
TAG_SOURCE is "None", the tag is remotely activated. TAG_SOURCE changes to
"Remote" while TAG_ON is set to TRUE and TAG_OFF to FALSE.
If a rising edge tag is detected remotely, and the status of TAG_SOURCE is
"Remote", the tag is remotely deactivated. TAG_SOURCE changes to "None" while
TAG_ON is set to FALSE and TAG_OFF to TRUE.
If TAG_SOURCE is "Local", remote commands are always prohibited.
3.20.15.5 Application
HLTGAPC is used to prevent the protection relay from reclosing and re-energizing
a feeder where maintenance is performed. While HLTGAPC is active, no reclosing is
allowed regardless of whether it is initiated through a protection trip, requested
locally through the LHMI, or remotely through a communications command.
In order to operate correctly, HLTGAPC must be properly configured with
Application Configuration. The TAG_ON and TAG_OFF outputs are connected where
they can block or enable any reclosing that is configured. Typically, TAG_ON can be
used on a recloser function block to inhibit reclosing and TAG_OFF can be used on a
circuit breaker function block to enable closing.
A LED or a button on the LHMI can be used to indicate that the HLTGAPC condition
is active. HLTGAPC can be activated, and the panel tagged, from the LHMI or from a
remote communications command. The protection relay retains the original source
(local or remote) of HLTGAPC and allows HLTGAPC to be deactivated only from the
same source. That is, a locally initiated HLTGAPC can only be deactivated locally and
a remotely initiated HLTGAPC can only be deactivated remotely. An exception to this
rule allowing remotely initiated HLTGAPC commands to be deactivated locally can
be made by changing the
only" to "Untag Loc or Rem". It is not possible to allow locally initiated HLTGAPC to
be deactivated remotely.
As an alternative to using a button to activate HLTGAPC locally, the function can be
activated from the Control menu of the LHMI.
The HLTGAPC status and the original source of the function are retained if power
is removed and restored or through any other re-initialization of the protection
relay. The HLTGAPC condition prior to the protection relay's reboot is automatically
restored after the protection relay re-initializes.
REX640
Technical Manual
Remote tag mode setting is "Untag Rem
Remote tag mode setting from the default "Untag Rem
Basic functions
Remote tag mode
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