Date Code 990215
Inputs, Outputs, Timers, and Other Control Logic
7-39
SEL-351P Manual Técnico
Corresponding text setting DP2_0 is not set (it is “blank”), so no message is displayed on the
front-panel display.
Continually Display a Message
To continually display a message in the rotation, set the SEL
OGIC
Control Equation display point
setting directly to 0 (logical 0) or 1 (logical 1) and the corresponding text setting. For example,
if an SEL-351P is protecting a 12 kV distribution feeder, labeled “Feeder 1204,” the feeder name
can be continually displayed with the following settings
DP5 = 1
(set directly to logical 1)
DP5_1 = FEEDER 1204
(displays when DP5 = logical 1)
DP5_0
=
(“blank”)
This results in the continual display of text setting DP5_1 on the front-panel display:
FEEDER 1204
This can also be realized with the following settings:
DP5 = 0
(set directly to logical 0)
DP5_1
=
(“blank”)
DP5_0 = FEEDER 1204
(displays when DP5 = logical 0)
This results in the continual display of text setting DP5_0 on the front-panel display:
FEEDER 1204
Active Setting Group Switching Considerations
The SEL
OGIC
Control Equation display point settings DPn (n = 1 through 8) are available
separately in each setting group. The corresponding text settings DPn_1 and DPn_0 are made
only once and used in all setting groups.
Refer to Figure SECTION 7: .28 and the following example setting group switching discussion.
Setting Group 1 is the Active Setting Group
When setting Group 1 is the active setting group, optoisolated input IN102 operates as a reclose
enable/disable switch with the following settings:
SEL
OGIC
Control Equation settings:
79DTL = !IN102 + ...
[= NOT(IN102) + ...; drive-to-lockout setting]
DP1 = IN102
Содержание SEL-351P
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