3.9
Date Code 20150130 Instruction Manual SEL-787 Relay
PC Software
Settings
Expression Builder
NOTE: Be sure to enable the
functions you need (Logic Settings >
SEL
OGIC Enable) before using
Expression Builder.
SELOGIC control equations are a powerful means for customizing device
performance.
ACSELERATOR QuickSet simplifies this process with the
Expression Builder, a rules-based editor for programming SEL
OGIC control
equations. The Expression Builder organizes device elements, analog
quantities, and SEL
OGIC control equation variables.
Access the Expression Builder
Use the Ellipsis buttons in the Settings dialog boxes of Settings Editor
windows to create expressions, as shown in Figure 3.9.
Figure 3.9 Expressions Created With Expression Builder
Expression Builder Organization
The Expression Builder dialog box is organized into two main parts
representing the left side (LVALUE) and right side (RVALUE) of the
SEL
OGIC control equation. The LVALUE is fixed for all settings.
Using the Expression Builder
Use the right side of the equation (RVALUE) to select broad categories of
device elements, analog quantities, counters, timers, latches, and logic
variables. Select a category in the RVALUE tree view, and the Expression
Builder displays all operands for that category in the list box at the bottom
right side. Directly underneath the right side of the equation, choose operators
to include in the RVALUE. These operators include basic logic, rising- and
falling-edge triggers, expression compares, and comments.
File > Save
Select the Save menu item from the File menu item of the Settings Editor
once settings are entered into
ACSELERATOR QuickSet. This will help ensure
the settings are not lost.
To Next Page
Loading...
