7-4
Inputs, Outputs, Timers, and Other Control Logic
Date Code 990215
SEL-351P Manual Técnico
The pickup/dropout timer for input IN101 (IN101D) is set at:
IN101D = 0.75 cycles
to provide input energization/deenergization debounce.
Input IN101 is also used in other example settings [i.e., SEL
OGIC
Control Equation settings
BSYNCH (see
Section 3: Overcurrent, Voltage, Synchronism Check, and Frequency
Elements
), 79RIS (see
Section 6: Close and Reclose Logic
), and DP2 (see
Rotating Default
Displays
at the end of this section)]. Using Relay Word bit IN101 for the circuit breaker status
setting 52A does not prevent using Relay Word bit IN101 in other SEL
OGIC
Control Equation
settings.
Input IN102
In this example, Relay Word bit IN102 is used in the SEL
OGIC
Control Equation drive-to-lockout
setting:
79DTL = !IN102 + ...
[=NOT(IN102) + ...]
Connect input IN102 to a reclose enable switch.
When the reclose enable switch is open, input IN102 is deenergized and the reclosing relay is
driven to lockout:
79DTL = !IN102 + ... = NOT(IN102) + ... = NOT(logical 0) +... = logical 1
When the reclose enable switch is closed, input IN102 is energized and the reclosing relay is
enabled, if no other setting condition is driving the reclosing relay to lockout:
79DTL = !IN102 + ... = NOT(IN102) + ... = NOT(logical 1) +... = logical 0 + ...
See
Section 6: Close and Reclose Logic
for more information on SEL
OGIC
Control Equation
setting 79DTL.
Содержание SEL-351P
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