7-26 Inputs, Outputs, Timers, and Other Control Logic Date Code 20001006
SEL-351 Instruction Manual
Figure 7.22: Active Setting Group Switching (With Single Input) Time Line
Active Setting Group Switching Example 2
Previous SEL relays (e.g., SEL-321 and SEL-251 Relays) have multiple settings groups controlled
by the assertion of three optoisolated inputs (e.g., IN1, IN2, and IN3) in different combinations as
shown in Table 7.6.
Table 7.6: Active Setting Group Switching Input Logic
Input States Active
IN3 IN2 IN1 Setting Group
0 0 0 Remote
0 0 1 Group 1
0 1 0 Group 2
0 1 1 Group 3
1 0 0 Group 4
1 0 1 Group 5
1 1 0 Group 6
Courtesy of NationalSwitchgear.com
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