Schweitzer Engineering SEL-351P - Page 150

1-54 Factory-Set Logic Date Code 990215
SEL-351P Manual Técnico
SEL OGIC settings
SET4
(set)
(reset)
Relay
Word
Bit
PB5
Relay
Word
Bit
LT4
RST4
DWG: MP351P034
BLOQUEIO
operator
control LED
setting
LED5 = !LT4
= NOT (LT4)
BLOQUEIO
operator control
pushbutton
(pulsed output -
see Figure 1.34)
LT4 is used in the following
SEL
OGIC settings to
supervise the operation of
the indicated operator
control:
Operator Control
SEL OGIC Settings Logic Application
TERRA HABILITADO SET1 , RST1 Figure 1.37
RELIGAMENTO HABILITADO SET2 , RST2 Figure 1.38
REMOTO HABILITADO SET3 , RST3 Figure 1.39
AJUSTES ALTERNATIVOS SS1 , SS2 Figure 1.43
SEF HABILITADO SET5 , RST5 Figure 1.41
PROTEÇÃO BLOQUEADA SET6 , RST6 Figure 1.42
FECHAR CL Fi
g
ure 1.20
BLOQUEIO operator control
OFF (LT4 = logical 1)
Figure SECTION 1: .44: BLOQUEIO Operator Control LED and Logic Application
F RONT -P ANEL S TATUS AND T RIP T ARGET LED S
See Figure 8 in the Front-Panel Interface section in the SEL-351P Quick-Start Installation and
User’s Guide for an explanation of the factory-set operation for the front-panel status and trip
target LEDs.
See
Figure SECTION 1: .45 through Figure SECTION 1: .48. The front-panel status and trip
target LEDs (except the CONTROLE HABILITADO status LED and the A, B, and C fault-type
trip target LEDs) are programmable. Two settings are made for each of these programmable
target LEDs:
• SEL
OGIC setting
• “Trip latch LED (Y/N)” global setting
The SEL
OGIC setting lists the conditions to illuminate the specified LED (e.g., LED11 = 59A1;
the FONTE CA LED illuminates when Relay Word bit 59A1 asserts to logical 1; 59A1 asserts to
logical 1 when nominal 120 Vac is applied to voltage input VA).
The “Trip latch LED (Y/N)” global setting determines if the specified LED illuminates in one of
two ways:
• Trip latch LED (Y/N) = N (LED operates as a status
LED):
For example, Trip latch LED11 (Y/N) = N and LED11 = 59A1
The FONTE CA LED illuminates when Relay Word bit 59A1 asserts to logical 1,
regardless of any trip condition.
• Trip latch LED (Y/N) = Y (LED operates as a trip target
LED):