GE LPS-O Instruction Manual page 277

13 XPRESSION BUILDER 13.4 CREATING XPRESSION BUILDER LOGIC
The next step is to take advantage of the internal protection flags in the relay, and put them to work in logical
combinations necessary to your specific application. Select the Input flags icon as shown in Figure 13–12:
INPUT ICON. The input flags are listed by group beginning with Table 13–3: CONFIGURABLE INPUTS on
page 13–9. You can move between groups by using the mouse to scroll through the pull-down menu. Simply
select the flag by clicking the left mouse button. Move the cursor to the location where the flag is going to be
used and click the left mouse button again. This action will place the flag at the desired location.
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Figure 13–12: INPUT ICON
The next step is to use the Xpression Builder Boolean operators. Select the Operator icon as shown in Figure
13–13: OPERATOR ICON. The available operators are AND, OR, NOT, Latches, Counters, PD Timers, and
Timers. Simply select the operator by clicking the left mouse button. Move the cursor to the location where the
operator is going to be used and click the left mouse button again. This action will place the operator at the
desired location.
Figure 13–13: OPERATOR ICON
The next step is to select the output contacts which will be used in the relay application. Select the Output flag
icon as shown in Figure 13–14: OUTPUT ICON. The output contacts are listed in Table 13–9: USER DEFIN-
ABLE OUTPUT FLAGS. Simply select the output flag by clicking the left mouse button. Move the cursor to the
location where the flag is going to be used and click the left mouse button again. This action will place the flag
at the desired location.
Figure 13–14: OUTPUT ICON
The next step is to start connecting the inputs to the Boolean operators and to the output gates. To use straight
line connections, select the Connection icon as shown in Figure 13–15: STRAIGHT CONNECTION ICON. To
use orthogonal line connections, select the Orthoconnection icon as shown in Figure 13–16: ORTHO-CON-
GE Power Management LPS-O Line Protection System 13-
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