ABB RELION REX640 Technical Manual page 272

Basic functions
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
3.20.15.4 Operation principle
The function can be enabled and disabled with the
corresponding parameter values are "on" and "off". When the
changed from "off" to "on", the monitored variable TAG_SOURCE is set to "None"
and saved to a nonvolatile memory.
When the
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
Remote tag mode
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.
272
Remote tag mode setting.
Operation setting is "on" and a reboot occurs, the TAG_SOURCE variable is
Local
command
Remote
command
Local
tag
Active
tag
Remote
tag
1MRS759142 F
Operation setting. The
Operation setting is
TAG_ON
TAG_OFF
TAG_SOURCE
Technical Manual
REX640