Sel 751A, Instruction Manual

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4.88
SEL-751A Relay Instruction Manual Date Code 20100129
Protection and Logic Functions
Logic Settings (SET L Command)
Figure 4.47 Example Use of SEL
OGIC
Variables/Timers
SV/Timers Settings
The SEL-751A includes 32 SEL
OGIC
variables. Table 4.35 shows the pickup,
dropout, and equation settings for SV01 and SV02. The remaining SEL
OGIC
variables have the same default settings as SV02.
The pickup times of 0 for the SV03PU and SV04PU settings shown above
provide an immediate Close and Trip actions from front-panel pushbuttons.
For a delayed Close, set SV03PU to the desired delay. Similarly, set SV04PU
for a delayed Trip action. See
Table 8.4 for more detail.
SV06PU
SV06D0
SV07PU
SV07D0
SV06
SV07
OUT101
OUT102
OUT103
OUT401
OUT101
OUT102
OUT401
Table 4.35 SEL
OGIC
Variable Settings
Setting Prompt Setting Range Default Settings
SV TIMER PICKUP 0.00–3000.00
SV01PU := 0.00
SV TIMER DROPOUT 0.00–3000.00
SV01DO := 0.00
SV INPUT SEL
OGIC
SV01 := WDGTRIP OR
BRGTRIP OR OTHTRIP OR
AMBTRIP OR (27P1T OR
27P2T) AND NOT LOP
SV TIMER PICKUP 0.00–3000.00
SV02PU := 3.00
SV TIMER DROPOUT 0.00–3000.00
SV02DO := 0.00
SV INPUT SEL
OGIC
SV02 := PB02
SV TIMER PICKUP 0.00–3000.00
SV03PU := 0.00
SV TIMER DROPOUT 0.00–3000.00
SV03DO := 0.00
SV INPUT SEL
OGIC
SV03 := LT03
SV TIMER PICKUP 0.00–3000.00
SV04PU := 0.00
SV TIMER DROPOUT 0.00–3000.00
SV04DO := 0.00
SV INPUT SEL
OGIC
SV04 := LT04
SV TIMER PICKUP 0.00–3000.00
SV05PU := 0.25
SV TIMER DROPOUT 0.00–3000.00
SV05DO := 0.25
SV INPUT SEL
OGIC
SV05 := (PB02 OR LT03 OR
LT04) AND NOT SV05T
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