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AUDIBLE ALARM Setting – When the alarm is set to ON, as shown in Figure 27,
it indicates an abnormal condition with the power or unit. It provides an audible tone
(beep) whenever the unit detects an internal problem, or a problem with an externally
connected battery pack. When it is set to OFF the audible tone is silenced.
Figure 27. AUDIBLE ALARM Setting Screen
SENSITIVITY Setting – Press the SETUP pushbutton to advance to the
SENSITIVITY function. This feature is used to adjust how the S Type unit reacts to
input voltage waveform distortion, and momentary power fluctuations. It allows you
to adjust the sensitivity of the S20BLK to LOW, MEDIUM, and HIGH (as shown in
Figure 28) using the SETUP, and Up/Down Arrow pushbuttons. The Sensitivity
adjustments have the following values:
HIGH Sensitivity – This should be used when the connected equipment is sensitive
to momentary low voltage or brief power fluctuations. When it is set to HIGH
sensitivity the unit is very sensitive to voltage distortion and is more likely to switch
back and forth to battery power than it would under a MEDIUM or LOW sensitivity
setting.
MEDIUM Sensitivity – This is the default setting suitable for most situations.
LOW Sensitivity – This setting should be used when the UPS frequently goes to
battery (even though the utility voltage appears normal).
Figure 28. SENSITIVITY (HIGH) Setting Screen
DISPLAY DIMMER Setting — This lets you set a brightness level for the VFD of
HIGH, LOW, or OFF. Use the SETUP pushbutton to advance to the DISPLAY
DIMMER screen, shown in Figure 29. Once the display is shown, repeatedly
pressing the Up or Down Arrow pushbutton allows you to set the brightness of the
display. Once the display brightness is to the desired level, press the SETUP
pushbutton to store the setting.
Note: Even when the display dimmer is set to OFF, the screen will turn back on
momentarily when there is a significant change in system status, such as a
power outage or a low battery condition.
AUDIBLE ALARM: ON
PRESS
↑ ↓ TO CHANGE
SENSITIVITY:HIGH
PRESS
↑ ↓ TO CHANGE