Schweitzer Engineering Laboratories SEL-351A - Multiple Setting Groups; Table 7.3 Definitions for Active Setting Group Indication Relay Word Bits SG1 through SG6; Table 7.4 Definitions for Active Setting Group Switching

7.18
SEL-351A Relay Instruction Manual Date Code 20080213
Inputs, Outputs, Timers, and Other Control Logic
Multiple Setting Groups
Multiple Setting Groups
The relay has six (6) independent setting groups. Each setting group has
complete relay (overcurrent, reclosing, frequency, etc.) and SEL
OGIC control
equation settings.
Active Setting Group
Indication
Only one setting group can be active at a time. Relay Word bits SG1–SG6
indicate the active setting group:
For example, if setting Group 4 is the active setting group, Relay Word bit
SG4 asserts to logical 1, and the other Relay Word bits SG1, SG2, SG3, SG5,
and SG6 are all deasserted to logical 0.
Selecting the Active
Setting Group
The active setting group is selected with:
➤ SELOGIC control equation settings SS1–SS6.
➤ The serial port GROUP command (see Section 10: Serial Port
Communications and Commands).
➤ Or the front-panel {GROUP} pushbutton (see Section 11: Front-
Panel Interface (Only on Models With LCD)).
SEL
OGIC control equation settings SS1–SS6 have priority over the serial port
GROUP command and the front-panel {GROUP} pushbutton in selecting the
active setting group.
Operation of SELOGIC
Control Equation
Settings SS1–SS6
Each setting group has its own set of SELOGIC control equation settings SS1–
SS6.
Table 7.3 Definitions for Active Setting Group Indication Relay Word Bits
SG1 Through SG6
Relay Word
Bit
Definition
SG1 Indication that setting Group 1 is the active setting group
SG2 Indication that setting Group 2 is the active setting group
SG3 Indication that setting Group 3 is the active setting group
SG4 Indication that setting Group 4 is the active setting group
SG5 Indication that setting Group 5 is the active setting group
SG6 Indication that setting Group 6 is the active setting group
Table 7.4 Definitions for Active Setting Group Switching SELOGIC Control
Equation Settings SS1–SS6
Setting Definition
SS1 go to (or remain in) setting Group 1
SS2 go to (or remain in) setting Group 2
SS3 go to (or remain in) setting Group 3
SS4 go to (or remain in) setting Group 4
SS5 go to (or remain in) setting Group 5
SS6 go to (or remain in) setting Group 6
Courtesy of NationalSwitchgear.com