Figure. 5.2.1 - 17. Entirely application-controlled setting group change with the cold load pick-up function.
In these examples the cold load pick-up function's output is used for the automatic setting group
change. Similarly to this application, any combination of the signals available in the relay's database
can be programmed to be used in the setting group selection logic.
As all these examples show, setting group selection with application control has to be built fully before
they can be used for setting group control. The setting group does not change back to SG1 unless it is
controlled back to SG1 by this application; this explains the inverted signal NOT as well as the use of
logics in setting group control. One could also have SG2 be the primary SG, while the ON signal would
be controlled by the higher priority SG1; this way the setting group would automatically return to SG2
after the automatic control is over.
Events
The setting group selection function block (abbreviated "SGS" in event block names) generates events
from its controlling status, its applied input signals, enabling and disabling of setting groups, as well as
unsuccessful control changes. The function does not have a register.
Table. 5.2.1 - 7. Event messages.
Event block name
Event names
SGS
SG2 Enabled
SGS
SG2 Disabled
SGS
SG3 Enabled
SGS
SG3 Disabled
SGS
SG4 Enabled
SGS
SG4 Disabled
SGS
SG5 Enabled
SGS
SG5 Disabled
A
AQ
Q-S254
-S254
Instruction manual
Version: 2.06
© Arcteq Relays Ltd
IM00024
35
Summary of Contents for AQ-S254
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