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Table 3.2.2 Binary Input Signals
Signal Names Driving Contact Condition / Function Enabled
BISW∗ (default)
External Mechanical trip
(EXT_MEC.TP1)
Closed when external device operated. / Initiate trip command
from operation of external device.
1
External Mechanical trip
(EXT_MEC.TP2)
Closed when external device operated. / Initiate trip command
from operation of external device.
2
External Mechanical trip
(EXT_MEC.TP3)
Closed when external device operated. / Initiate trip command
from operation of external device.
3
External Mechanical trip
(EXT_MEC.TP4)
Closed when external device operated. / Initiate trip command
from operation of external device.
4
Indication reset Closed to reset TRIP LED indication. / Reset indication
externally.
5
Protection block Closed to block the protection. / Block the protection
externally.
6
Signal for event record Closed when external device operated. / Initiate event record
with external signal.
14
Signal for event record Closed when external device operated. / Initiate event record
with external signal.
15
Signal for event record Closed when external device operated. / Initiate event record
with external signal.
16
GRT100
External Mechanical trip
External Mechanical trip
External Mechanical trip
BI1
BI2
BI3
(
−
)
(+)
0V
1
(
Inv
)
BISW1 (Norm)
1
PLC function
Programmable
logic
BI1
Protection
schemes
Signal No.
BI2
(
Inv
)
BISW2 (Norm)
1
(
Inv
)
BISW3 (Norm)
1
BI3
Figure 3.2.1 Logic Level Inversion
3.2.2 Binary Output Signals
The number of output binary signals and their output terminals vary depending on the relay model.
See Appendix G for details. For all models, all outputs except the tripping command, signal for
command protections and relay failure signal can be configured.
The signals shown in the signal list in Appendix B can be assigned to the output relay individually
or in arbitrary combinations. Signals can be combined using either an AND circuit or OR circuit
with 6 gates each as shown in Figure 3.2.2. The output circuit can be configured according to the
setting menu. Appendix D shows the factory default settings.
A 0.2s delayed drop-off timer can be attached to these assigned signals. The delayed drop-off time
is disabled by the scheme switch [BOTD].
The relay failure contact closes when a relay defect or abnormality in the DC power supply circuit
is detected.