2.15
Date Code 20170601 Instruction Manual SEL-387-0, -5, -6 Relay
Installation
Circuit Board Configuration
Second ALARM Contact Jumper
Note the locations of main board jumper JMP23 and output contact OUT107 in
Figure 2.10, and refer to Table 2.2 to understand the relationship between the
jumper and output contact. The jumper JMP23 controls the operation of
output contact OUT107. JMP23 provides the option of a second alarm output
contact by changing the signal that drives output contact OUT107.
If jumper JMP23 is installed on the two bottom pins and both output contacts
OUT107 and ALARM are the same output contact type (a or b), they will be in the
same state (closed or open). If jumper JMP23 is installed on the two bottom
pins and output contacts OUT107 and ALARM are different output contact types
(one is an a and one is a b), they will be in opposite states (one is closed and
one is open).
Password and Breaker Jumpers
Refer to Figure 2.10 and note the password and breaker jumpers identified as
JMP6. To change these jumpers, remove the relay front panel and main board
according to the steps outlined previously in Accessing the Relay Circuit
Boards on page 2.13.
Put password jumper JMP6A (left-most jumper) in place to disable serial port
and front-panel password protection. With the jumper removed, password
security is enabled. View or set the passwords with the PASSWORD
command (see Section 7: Serial Port Communications and Commands).
Put breaker jumper JMP6B in place to enable the serial port commands
OPEN, CLOSE, and PULSE. The relay ignores these commands while you
remove JMP6B. Use these commands primarily to assert output contacts for
circuit breaker control or testing purposes (see Section 7: Serial Port
Communications and Commands).
Do not install jumpers in position JMP6C or JMP6D. If a jumper is in position
JMP6D and you lose dc power to the relay, the relay will power up in
SELBOOT when power is restored. The front panel will show
SELBOOT and
then a warning to remove the jumper when you attempt serial port
communication.
Table 2.2 SEL-387 Second ALARM Contact Jumper Position
JMP 23 Position Output Contact OUT 107 Operation
Second Alarm output contact
(operated by alarm logic/circuitry).
Relay Word bit OUT107 has no effect
on output contact OUT107 when jumper
JMP23 is in this position.
Regular output contact OUT107
(operated by Relay Word bit OUT107).
Jumper JMP23 comes in this position
in a standard relay shipment.
Disable output contact OUT107. If
JMP23 is not installed, output contact
OUT107 is not functional and will remain in
its de-energized state.
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