ABB RELION REX640 Technical Manual page 133

1MRS759142 F
3.7.2.2 Test mode
The function has two outputs, BEH_TST and BEH_BLK, which are activated in test
mode according to
Table 65: Test mode
Test mode
Normal mode
IED blocked
IED test
IED test and blocked
3.7.2.3 Frequency adaptivity
The FRQ_ADP_WARN output is active when full adaptation to the actual frequency is
not reached or guaranteed. The FRQ_ADP_FAIL output is active when no frequency
source has sufficient amplitude and the nominal frequency window size is used
in measurements. The FRQ_ADP_BU output is active when the backup adaptivity
frequency source is active.
When switching from the main frequency source to the backup frequency source,
there is an interval of 200 ms where the last known frequency is used to determine
the measurement window size. During this period, FRQ_ADP_WARN is activated.
This also happens when no frequency source has sufficient amplitude and the last
frequency is held for 3 s before activating output FRQ_ADP_FAIL.
REX640
Technical Manual
Table 65
.
Description
Normal operation
Protection works as
in "Normal mode" but
the ACT configuration
can be used to block
physical outputs to
process. Control func-
tion commands are
blocked.
Protection works as
in "Normal mode" but
protection functions
work in parallel with
test parameters.
Protection works as
in "Normal mode"
but protection func-
tions work in par-
allel with the test
parameter. The ACT
configuration can be
used to block physical
outputs to process.
Control function com-
mand is blocked.
For more information, see the Test mode section in this manual.
Protection Protection
BEH_BLK BEH_TST
FALSE FALSE
TRUE FALSE
FALSE TRUE
TRUE TRUE
Basic functions
133