Schweitzer Engineering Laboratories SEL-351A - Table 2.5 Password and Breaker Jumper Positions for Standard Relay Shipments; Table 2.6 Password and Breaker Jumper Operation; Table 2.7 EIA-232 Serial Port Voltage Jumper Positions for Standard Relay Shipments

2.37
Date Code 20080213 Instruction Manual SEL-351A Relay
Installation
Circuit Board Connections
The output contact type for any output contact can be changed (see Output
Contact Jumpers on page 2.35). Thus, the dedicated ALARM output contact and
the “extra alarm” output contact can be configured as the same output contact
type if desired (e.g., both can be configured as b-type output contacts).
Password and
Breaker Jumpers
Note that JMP2 and JMP6 in Figure 2.26 have multiple jumpers A through D.
Jumpers A and B are used (see Table 2.5 and Table 2.6). Since jumpers C and
D are not used, the positions (ON or OFF) of jumpers C and D are of no
consequence.
EIA-232 Serial Port
Voltage Jumpers
The jumpers listed in Table 2.7 connect or disconnect +5 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 1 0.2 for EIA-232 serial port pin functions.
In a standard relay 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.
Condition of Acceptability for North American Product Safety
Compliance
To meet product safety compliance for end-use applications in North America,
use an external fuse rated 3 A or less in-line with the +5 Vdc source on pin 1.
SEL fiber-optic transceivers include a fuse that meets this requirement.
Table 2.5 Password and Breaker Jumper Positions for Standard Relay
Shipments
Relay Model
Number
Password
Jumper/Position
(for standard
relay shipments)
Breaker Jumper/
Position
(for standard
relay shipments)
Reference
351A JMP6-A = OFF JMP6-B = ON Figure 2.26
Table 2.6 Password and Breaker Jumper Operation
Jumper Type Jumper Position Function
Password ON
(in place)
OFF
(removed/not in place)
disable password protection
a
for serial
ports and front panel
enable password protection
a
for serial
ports and front panel
a
View or set the passwords with the PASSWORD command (see Section 10: Serial Port
Communications and Commands).
Breaker ON
(in place)
OFF
(removed/not in place)
enable serial port commands OPEN
b
,
CLOSE
a
, and PULSE
c
disable serial port commands OPEN
b
,
CLOSE
b
, and PULSE
c
b
Also controls Fast Operate Breaker Control Open/Close Commands (see Appendix D).
c
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).
Table 2.7 EIA-232 Serial Port Voltage Jumper Positions for Standard Relay
Shipments
Relay Model
Number
EIA-232 Serial PORT 2
(rear panel)
EIA-232 Serial PORT 3
(rear panel)
Reference
351A JMP2 = OFF JMP1 = OFF Figure 2.26
Courtesy of NationalSwitchgear.com