User`s guide

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USER’S GUIDE AUTOMATIC TRANSFER SWITCH
15
Status menu
Item Definition
Selected Source Source currently supplying power to the load.
Preferred Source Power source to use when both sources are acceptable.
Switch Status Indicates whether the alternate power source is acceptable. The
load will switch to this source if the selected power source fails.
Front Panel Select Indicates if the front panel button can be used to change sources
(LOCKED or UNLOCKED).
Source A Reports the condition of power source A (OK or FAIL).
Source B Reports the condition of power source B (OK or FAIL).
Phase Sync Reports if Source A and B are in phase (for 3-phase units
only).The preference indicator on the front panel will flash if
sources are not in phase.
24V PS Reports the condition of the 24V power supply (OK or FAIL).
+12V PS Reports the condition of the +12V power supply (OK or FAIL).
–12V PS Reports the condition of the –12V power supply (OK or FAIL).
5V PS Reports the condition of the 5V power supply (OK or FAIL).