7.36
SEL-351A Relay Instruction Manual Date Code 20080213
Inputs, Outputs, Timers, and Other Control Logic
Rotating Default Display (Only on Models With LCD)
Reclosing Relay Enabled
In Figure 7.28, optoisolated input IN102 is energized to enable the reclosing
relay, resulting in:
DP1 = IN102 = logical 1
This results in the display of corresponding text setting DP1_1 on the front-
panel display:
Reclosing Relay Disabled
In Figure 7.28, optoisolated input IN102 is de-energized to disable the
reclosing relay, resulting in:
DP1 = IN102 = logical 0
This results in the display of corresponding text setting DP1_0 on the front-
panel display:
Circuit Breaker Status Indication
Make SELOGIC control equation display point setting DP2 (and 52A):
52A = IN101 (see Figure 7.2)
DP2 = 52A
Make corresponding, complementary text settings:
DP2_1 = BREAKER CLOSED
DP2_0 = BREAKER OPEN
Display point setting DP2 controls the display of the text settings.
Circuit Breaker Closed
In Figure 7.28, optoisolated input IN101 is energized when the 52a circuit
breaker auxiliary contact is closed, resulting in:
52A = IN101 = logical 1
DP2 = 52A = logical 1
This results in the display of corresponding text setting DP2_1 on the front-
panel display:
79 ENABLED
79 DISABLED
BREAKER CLOSED
Courtesy of NationalSwitchgear.com
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