S&C MIcro-AT Installation, Programming, And Operation Manual page 22

Source-transfer control in a weatherproof enclosure
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Field Adjustment and Programming
22
S&C Instruction Sheet 515-600
Is the factory setting for each item (shown in the last column of the table,
in boldface type) appropriate for this installation? If not, change it.
For example, here is the display for CONFIG: SELECT PREFERRED
with its factory setting, LEFT:
CONFIG: SELECT PREFERRED
LEFT
If the right source is the preferred source at this installation, press the
CHANGE key. The following display will appear:
CONFIG: SELECT PREFERRED
ENTER ACCESS CODE
Press each digit of the access-code number, then press the ENTER key.
Note: You will not be required to reenter the access code number until
one of the following occurs:
• The QUIT key is pressed.
• The MANUAL/AUTOMATIC operation selector switch is placed in
Automatic mode
• No keystrokes of the keypad have been detected for 5 minutes.
Press the "
" key to select the other possible oper ating state for
CONFIG: SELECT PREFERRED, the RIGHT source. Then, press the
ENTER key. The dis play will now look like this:
CONFIG: SELECT PREFERRED
RIGH T
The other field-adjustable items of the Configure menu can be changed
in the same manner. Proce dures for normalizing the left and right sources,
set ting the base voltages on the left and right sources, selecting a custom
access code, and selecting the communications card bit rate are discussed
below.
(d) Normalize the left and right sources (unless CON FIG: VOLTAGE
SENSING has been factory-set for 2 WIRE voltage sensing). Each source
must be nor malized to compensate for any output-voltage mag nitude
unbalance and/or phase-angle unbalance between the voltage-sensing
devices on that source. Each source should be in its known normal state, so
unusual system conditions aren't calibrated out. Here, for example, is the
display for CONFIG: NOR MALIZE LEFT:
CONFIG: NORMALIZE LEFT
NORMAL IZE
CHANGE
CHANGE
CHANGE

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