Schweitzer Engineering Laboratories SEL-787 - Figure 3.9 Expressions Created with Expression Builder

3.9
Date Code 20081022 Instruction Manual SEL-787 Relay
PC Software
Settings
Step 5. If you enter a setting that is out of range or has an error,
ACSELERATOR QuickSet shows the error at the bottom of the
Settings Editor. Double-click the error listing to go to the
setting and enter a valid input.
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
Ellipsis Button
Created Expression