7-32
Inputs, Outputs, Timers, and Other Control Logic
Date Code 990215
SEL-351P Manual Técnico
O
UTPUT
C
ONTACTS
Figure SECTION 7: .26 shows an example operation of output contact Relay Word bits (e.g.,
Relay Word bits OUT101 through OUT107 in Figure SECTION 7: .26) due to:
SEL
OGIC
Control Equation operation (e.g., SEL
OGIC
Control Equation settings OUT101
through OUT107 in Figure SECTION 7: .26)
or
PULSE command execution
The output contact Relay Word bits in turn control the output contacts (e.g., output contacts
OUT101 through OUT107 in Figure SECTION 7: .26).
Alarm logic/circuitry controls the ALARM output contact (see Figure SECTION 7: .26)
Figure SECTION 7: .26 is used for following discussion/examples.
Settings Example
Three output contacts can be used for the following functions:
OUT101 = TRIP
(overcurrent tripping/manual tripping; see
Section 5: Trip and
Target Logic
)
OUT102 = CLOSE
(automatic reclosing/manual closing; see
Section 6: Close and
Reclose Logic
)
OUT103 = SV1T
(breaker failure trip; see
SEL
OGIC
Control Equation
Variables/Timers
earlier in this section)
OUT104 = 0
(output contact OUT104 not used – set equal to zero)
OUT107 = 0
(output contact OUT107 not used – set equal to zero)
Operation of Output Contacts for Different Output Contact Types
Output Contacts OUT101 Through OUT107
Refer to Figure SECTION 7: .26.
The execution of the serial port command PULSE n (n = OUT101 through OUT107) asserts the
corresponding Relay Word bit (OUT101 through OUT107) to logical 1. The assertion of
SEL
OGIC
Control Equation setting OUTm (m = 101 through 107) to logical 1 also asserts the
corresponding Relay Word bit OUTm (m = 101 through 107) to logical 1.
The assertion of Relay Word bit OUTm (m = 101 through 107) to logical 1 causes the
energization of the corresponding output contact OUTm coil. Depending on the contact type (a
or b), the output contact closes or opens as demonstrated in Figure SECTION 7: .26. An “a”
type output contact is open when the output contact coil is deenergized and closed when the
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