7-26
Inputs, Outputs, Timers, and Other Control Logic
Date Code 20010625
SEL-311L Instruction Manual
The SEL-311L Relay can be programmed to operate similarly. Use three optoisolated inputs to
switch between the six setting groups in the SEL-311L Relay. In this example, optoisolated
inputs IN101, IN102, and IN103 on the relay are connected to a rotating selector switch in
Figure 7.21.
Figure 7.21: Rotating Selector Switch Connected to Inputs IN101, IN102, and IN103 for
Active Setting Group Switching
The selector switch has multiple internal contacts arranged to assert inputs IN101, IN102, and
IN103, dependent on the switch position. As shown in Table 7.7, when the selector switch is
moved from one position to another, a different setting group is activated. The logic in Table 7.6
is implemented in the SEL
OGIC
control equation settings in Table 7.7.
Table 7.7: SEL
OGIC
Control Equation Settings for Rotating Selector Switch
Active Setting Group Switching
SS1 = !IN103 * !IN102 * IN101
= NOT(IN103) * NOT(IN102) * IN101
SS2 = !IN103 * IN102 * !IN101
= NOT(IN103) * IN102 * NOT(IN101)
SS3 = !IN103 * IN102 * IN101
= NOT(IN103) * IN102 * IN101
SS4 = IN103 * !IN102 * !IN101
= IN103 * NOT(IN102) * NOT(IN101)
SS5 = IN103 * !IN102 * IN101
= IN103 * NOT(IN102) * IN101
SS6 = IN103 * IN102 * !IN101
= IN103 * IN102 * NOT(IN101)
The settings in Table 7.7 are made in each setting Group 1 through 6.
Summary of Contents for SEL-311L
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