Schweitzer Engineering SEL-351P - Input Functions; Input IN101; Settings Examples

Date Code 990215 Inputs, Outputs, Timers, and Other Control Logic 7-3
SEL-351P Manual Técnico
If more than 1 cycle of debounce is needed, run Relay Word bit INn (n = 101 through 106)
through a SEL
OGIC Control Equation variable timer and use the output of the timer for input
functions (see
Figure SECTION 7: .23 and Figure SECTION 7: .24).
Input Functions
There are no
optoisolated input settings such as:
IN101 =
IN102 =
Optoisolated inputs IN101 through IN106 receive their function by the way their corresponding
Relay Word bits IN101 through IN106 are used in SEL
OGIC Control Equations.
Settings Examples
Figure SECTION 7: .2: Circuit Breaker Auxiliary Contact and Reclose Enable
Switch Connected to Optoisolated Inputs IN101 and IN102
The example functions for inputs IN101 and IN102 are described in the following discussions.
Input IN101
In this example, Relay Word bit IN101 is used in the SEL
OGIC Control Equation circuit breaker
status setting:
52A = IN101
Connect input IN101 to a 52a circuit breaker auxiliary contact.
If a 52b circuit breaker auxiliary contact is connected to input IN101, the setting is changed to:
52A = !IN101 [!IN101 = NOT(IN101)]
See Close Logic in Section 6: Close and Reclose Logic for more information on SEL
OGIC
Control Equation setting 52A.