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13 XPRESSION BUILDER
13.4 CREATING XPRESSION BUILDER LOGIC
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Figure 13–8: INVERTED CC INPUTS
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 below. The input
flags are listed by group beginning with Table 13–3: CONFIGURABLE INPUTS. 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 but-
ton again. This action will place the flag at the desired location.
Figure 13–9: INPUT, OPERATOR, AND OUTPUT ICONS
Select the Operator icon as shown above. 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 loca-
tion 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.
The next step is selecting the output contacts which will be used in the relay application. Select the Output flag
icon as shown above. The output contacts are listed in Table 13–9: USER DEFINABLE OUTPUT FLAGS.
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.
Start connecting the inputs to the Boolean operators and to the output gates. To use straight line connections,
select the Connection icon as shown below. To use orthogonal line connections, select the Orthoconnection
icon as shown in below. Once the type of connection is selected, click the left mouse button on an input or
Boolean operator output connection stud. Move the mouse and click the left button on the connection stud of
an output or the input of a Boolean operator.
If all the inputs are connected to logic gates and/or output contacts, the logic is ready for compilation.
Figure 13–10: STRAIGHT AND ORTHO-CONNECTION ICONS
GE Power Management
LPS-D Line Protection System
13-
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