Schweitzer Engineering SEL-351P - Page 153

Date Code 990215 Factory-Set Logic 1-57
SEL-351P Manual Técnico
SEL OGIC settings
SET7
(set)
(reset)
Relay
Word
Bit
LT7
RST7
LT7 is used in the CL
(close conditions other
than auto-reclose),
ULCL (unlatch close),
and 79DTL (drive-to-
lockout) SEL
OGIC
settings. (See Figures
1.20, 1.21 and 1.25.)
1
0
LINHA
VIVA LED
setting
LED13 = !LT7
= NOT (LT7)
= NOT (1)
= 0
(always extinguished)
Hot line tag OFF
(LT7 = logical 1)
DWG: MP351P039
Figure SECTION 1: .49: Hot Line Tag Logic
Figure SECTION 1: .50 shows modified hot line tag logic, where the hot line tag can be set/reset
remotely (with input IN102 wired to a SCADA contact).
Input IN102 is not supervised in this example. A SCADA contact pulses input IN102 to set/reset
hot line tag remotely.
SEL OGIC settings
SET7
(set)
(reset)
Relay
Word
Bit
LT7
RST7
DWG: MP351P012
IN102
input IN102 pulsed
by SCADA contact
to enable/disable a
hot line tag
LT7 is used in the CL
(close conditions other
than auto-reclose),
ULCL (unlatch close),
and 79DTL (drive-to-
lockout) SEL
OGIC
settings. (See Figures
1.20, 1.21, and 1.25.)
LINHA
VIVA LED
setting
LED13 = !LT7
= NOT (LT7)
Hot line tag OFF (by
local or remote means
;
LT7 = logical 1)
Relay
Word
Bit
rising
edge
detect
rising
edge
detect
Figure SECTION 1: .50: Remote Control of Hot Line Tag