4.20
SEL-587Z Instruction Manual
Date Code 20020903
Control Logic
Output Contacts
Output Contacts
SEL
OGIC
control equation settings OUT1 through OUT4 control Relay Word
bits OUT1 through OUT4, respectively. Relay Word bits OUT1 through
OUT4 in turn control output contacts OUT1 through OUT4, respectively.
Alarm logic/circuitry controls the ALARM output contact. See
EXAMPLE 4.11
Default Settings
The default setting for high-impedance tripping follows:
OUT1 =
87A1 + 87B1 + 87C1
Output Contact OUT1
The default setting for a bus zone operated alarm follows:
OUT2 =
SV5T
Output Contact OUT2
The default setting for a CT open-circuit alarm follows:
OUT3 =
87A2 + 87B2 + 87C2
Output Contact OUT3
The default setting for a breaker fail follows:
OUT4 =
SV6T
Output Contact OUT4
Issuing the serial port command
PULSE
n
(
n
= OUT1 through OUT4) asserts
the corresponding Relay Word bit (OUT1 through OUT4) to logical 1. The
assertion of SEL
OGIC
control equation setting OUT
m
(
m
= 1 through 4) to
logical 1 also asserts the corresponding Relay Word bit OUT
m
(
m
= 1 through
4) to logical 1.
Summary of Contents for SEL-587Z
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