Date Code 990215
Additional Installation Details
2-3
SEL-351P Manual Técnico
P
ASSWORD AND
B
REAKER
J
UMPERS
Table SECTION 2: .4: Password and Breaker Jumper Positions for Standard Relay
Shipments
Password Jumper/Position
(for standard relay shipments)
Breaker Jumper/Position
(for standard relay shipments)
JMP6-A = OFF
JMP6-B = ON
Table SECTION 2: .5: Password and Breaker Jumper Operation
Jumper Type
Jumper Position
Function
Password ON
(in place)
disable password protection
1
for serial ports and
front panel
OFF
(removed/not in place)
enable password protection
1
for serial ports and
front panel
Breaker ON
(in place)
enable serial port commands OPEN, CLOSE, and
PULSE
2
OFF
(removed/not in place)
disable serial port commands OPEN, CLOSE, and
PULSE
2
1
View or set the passwords with the PASSWORD command (see
Section 10: Serial Port
Communications and Commands
).
2
The OPEN, CLOSE, and PULSE commands are used primarily to assert output contacts for
circuit breaker control or testing purposes (see
Section 10: Serial Port Communications and
Commands
).
Note that JMP6 in Figure 6 in the
Communications
section of the
SEL-351P Quick-Start
Installation and User’s Guide
has multiple jumpers A through D. Jumpers A and B are used
(see Table SECTION 2: .4 and Table SECTION 2: .5). Jumpers C and D are not used.
Therefore, the positions (ON or OFF) of jumpers C and D are of no consequence.
EIA-232 S
ERIAL
P
ORT
V
OLTAGE
J
UMPERS
The jumpers listed in Table SECTION 2: .6 connect or disc5 Vdc to Pin 1 on the
corresponding EIA
-
232 serial ports. The +5 Vdc is rated at 0.5 A maximum for each port. See
Table 10.1 in
Section 10: Serial Port Communications and Commands
for EIA
-
232 serial port
pin functions.
In a standard SEL-351P shipment, the jumpers are “OFF” (removed/not in place) so that the +5
Vdc is not connected to Pin 1 on the corresponding EIA-232 serial ports. Put the jumpers “ON”
(in place) so that the +5 Vdc is connected to Pin 1 on the corresponding EIA-232 serial ports.
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