8-26
Application
BE1-951
Table 8-13. FDR-W-IL Contact Sensing Input Logic
Input
Purpose
Variable Label
State Labels
Closed (1)
Open (0)
IN1
51b breaker status
BREAKER
OPEN
CLOSED
IN2
Reclosing Drive to Lockout. Drives recloser to lockout
when de-energized. Can be used with an external
switch to disable the recloser. If IN2 is not used, it
must be strapped high to enable the recloser.
RCL_DTL
NORMAL
DTL
IN3
Enable neutral and negative sequence, 50 and 51
protection when IN3 is energized.
N&Q_ENABLE
ENABLED
DISABLD
IN4
When IN4 is de-energized, the relay is placed in Test
mode and reclosing and breaker failure are disabled.
TESTDISABL
NORMAL
TSTMODE
Table 8-14. FDR-W-IL Function Block Logic
Function
Purpose
BESTlogic
Expression
Mode Setting
50TP
Block when recloser sequence controlled blocking
output is TRUE.
79SCB
1
(enabled)
50TN
Block when recloser sequence controlled blocking
output is TRUE or when disabled by IN3 or virtual
switch 243.
79SCB+/IN3+243
1
(3-Phase
Residual)
50TQ
Block when recloser sequence controlled blocking
output is TRUE or when disabled by IN3 or virtual
switch 243.
79SCB+/IN3+243
1
(enabled)
150TP
Not used
0
1 (enabled)
150TN
Not used
0
1 (enabled)
150TQ
Not used
0
1 (enabled)
51P
Not used
0
1 (enabled)
51N
Block when disabled by IN3 or virtual switch 243.
/IN3+243
1
(3-Phase
Residual)
51Q
Block when disabled by IN3 or virtual switch 243
/IN3+243
1 (enabled)
151N
Not used
0
0 (disabled)
27P
Not used
0
0 (disabled)
59P
Not used
0
0 (disabled)
59X
Not used
0
0 (disabled)
47
Not used
0
0 (disabled)
62
Not used
0
0 (disabled)
162
Not used
0
0 (disabled)
Breaker Status Logic: Closed breaker is indicated
when IN1 is de-energized.
/IN1