HP Tower Uninterruptible Power System - Manual (Page 76)

Configuration and operation 76
If communication with the UPS is lost, the diagram appears gray. Diagrams do not display for line-interactive
UPSs.
The following table describes the possible diagrams.
Diagram UPS operating
mode
UPS with automatic
bypass
UPS without
automatic bypass
The following table describes the possible diagram elements.
Diagram element Description
AC Normal Input
Green—In tolerance
Gray—Out of tolerance
AC Normal Flow
Yellow—AC to DC converter powered by
normal AC
Gray—AC to DC converter not powered by
normal AC
AC to DC Converter
Green—Powered