American Power Conversion MatrixTM UPS - Manual (Page 23)

For applications where the UPS is used as a remote power source or where
the UPS frequently transfers to on-battery operation due to poor service
quality, the function of the audible alarm may be altered so that it will
not become an annoyance.
l All imed - A sequence of four beeps is sounded immediately upon transfer
to on-battery operation. The UPS sounds the beep sequence every 30 seconds
while operating on-battery. When low battery conditions are reached, the alarm
changes to a beep once every second.
l 30s delay - The on-battery audible alarm is disabled for the first 30 seconds
of on-battery operation.
l Low Batt - The audible alarm is disabled during on-battery operation until
low battery conditions are reached.
l Disable - The audible alarm is disabled during on-battery operation and
low battery conditions.
Many computer networks that issue UPS shutdown commands are unable to
do so as the last part of a shutdown routine. For these applications, the UPS
provides a settable delay interval before shut down to allow the network to
finish its shutdown routine.
l Shut down delay function choices are 20, 180, 300, and 600 seconds.
A delay interval before energizing the output following return of normal
utility voltage, or following a scheduled shut down, may be set by the user.
This delay is useful in applications that require staggered power up of
equipment connected at various sources.
l Load power delay function choices are 0, 60, 180, and 300 seconds.
This function has no meaning for the 208/240 Vac, 60 Hz version UPS. The
display will always respond 208 V.
The UPS can be set to report the output voltage from either the nominal 208V
or 240V output. This can be accomplished regardless of whether the input is
configured for operation from 208V or 240V service. When an optional power
distribution plate or Power Distribution Unit (PDU) is installed, the UPS should
be set to report the correct output voltage. When the Auto function is chosen, the
reported nominal output voltage is scaled according to the input tap selected
(see section 4.5).
The UPS can be set do display all menu choices in either English, French,
German, or Spanish.