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Schweitzer Engineering Laboratories SEL-787 - Page 72

Schweitzer Engineering Laboratories SEL-787
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3.10
SEL-787 Relay Instruction Manual Date Code 20081022
PC Software
Settings
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.
File > Send
To transfer the edits made in the ACSELERATOR QuickSet edit session, you
must send the settings to the relay. Select Send from the File menu. In the
dialog box that opens, select the settings section you want transferred to the
relay by checking the appropriate box.
Edit > Part Number
Use this menu item to change the part number if it was entered incorrectly
during an earlier step.
Text Files
Select Tools > Import and Tools > Export on the ACSELERATOR QuickSet
menu bar to import or export settings from or to a text file. Use this feature to
create a small file that can be more easily stored or sent electronically.

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