3.20.15.2 Function block
Figure 152: Function block
3.20.15.3 Functionality
The hotline tag function HLTGAPC is used to block all reclosing of the breaker,
from both local and remote sources, when activated. When the function is activated
locally, it can only be reset locally. If activated remotely, it can be reset depending on
the
Remote tag mode
setting.
3.20.15.4 Operation principle
The function can be enabled and disabled with the
Operation
setting. The
corresponding parameter values are "on" and "off". When the
Operation
setting is
changed from "off" to "on", the monitored variable TAG_SOURCE is set to “None”
and saved to a nonvolatile memory.
When the
Operation
setting is "on" and a reboot occurs, the TAG_SOURCE variable is
read from the nonvolatile memory.
The operation of HLTGAPC can be described with a module diagram. All the modules
in the diagram are explained in the next sections.
TAG_ON_OFF
TAG_OFF
TAG_ON
Local
command
TAG_SOURCE
Remote
command
Remote tag mode
Local
tag
Remote
tag
Active
tag
Figure 153: Functional module diagram
Local tag
Local tag is activated or deactivated on rising edge detection of TAG_ON_OFF input
or with a local command from the LHMI when the protection relay is in local mode.
Basic functions
1MRS759142 F
272 REX640
Technical Manual
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