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SDU AC-A Series
A272-290 Rev. 5 07/2018
7.0 Operating Instructions
7.1 TURNING ON THE UPS
•
Press the POWER ON/OFF/TEST button for more than 2 second until you hear the “3 quick beeps” and
the LEDs turn ON.
Note: If utility power is not present, the UPS will be in back-up mode. The load will be powered from the
internal batteries until the discharge point is reached.
7.2 TURNING OFF THE UPS
•
Hold the POWER ON/OFF/TEST button until the LEDs turn OFF.
7.3 ALARM
•
Factory default setting is alarm enabled.
•
To enable/disable Alarm:
•
When the UPS is in back-up mode, press the POWER ON/OFF/TEST button for at least 1 second to silence
the alarm (this function is disabled when the UPS status is either LOW BATTERY or OVERLOAD MODE). To
re-enable the alarm, press the POWER ON/OFF/TEST button for at least 1 second. Additionally, you can
enable/disable the alarm via UPSMON Software.
7.4 SELF TEST
• This UPS has a self diagnostic feature that verifies both the operation of the UPS and the condition of the
battery.
•
In AC mode, press and release the POWER ON/OFF/TEST button for at least 1 second to perform a self-
test. During the self-test, the UPS momentarily operates in back-up mode (YELLOW LED will illuminate
momentarily then goes back to GREEN). If the UPS passes the self-test, it returns to AC mode.
•
If the YELLOW LED does not illuminate momentarily, please contact SolaHD Technical Support or your
local SolaHD distributor for a replacement.
•
Additionally a self-test can be ran via UPSMON software.
7.5 GREEN MODE
•
Factory default setting is Green Mode disabled.
•
Green Mode is a feature to reserve battery energy in low load conditions. In back-up mode and if the
load level is less than approximately 2% ~ 4% (or 60W), the UPS will shutdown to save battery in 180
seconds. If power is restored within 180 seconds, the UPS will return to AC mode.
•
Green Mode Enable/Disable:
•
Green Mode can be ENABLED or DISABLED by pressing the POWER ON/OFF/TEST at start-up per TABLE 2:
Green Mode
Alarm Signal
Enabled
press POWER ON/OFF/TEST button and release until “
3 beeps
” are heard
Disabled
press POWER ON/OFF/TEST button and release until the “
2 beeps
” are heard
Table 1. Green Mode Setting Table
