14
The
AC POWER FAIL ALARM will trigger immediately when the AC power to the unit is lost, green “AC” LED
will turn off. The alarm will automatically reset when AC power is restored to the unit. When AC power is lost
the front panel display and indicators will remain powered by the connected batteries.
The
SUMMARY ALARM will trigger if any of the below conditions occur for longer than 5 seconds. When the
summary alarm triggers the red “SUMMARY” LED will turn on:
Low DC Voltage
Positive Ground*
High DC Voltage
Negative Ground*
Low DC Current*
AC Failure*
* - May or may not be included in the Summary Alarm (Factory Calibration)
The
LOW DCA ALARM will trigger if the output DC current of the charger has dropped below the alarm
threshold for longer than 5 seconds, red “LOW CURRENT” LED will turn on. This is usually caused by the load (if
applicable) being disconnected or going into a sleep state as well as the battery (if applicable) reaching a full
charge. This could also be the result of maladjustments of the output voltage settings. In rare cases this could
be the result of certain load sharing setups in which the other charger is set up to supply more power to the
load. See Section
3.5.1 CUSTOMER CALIBRATION for information on viewing and adjusting the threshold value.
All alarms have adjustable time delay to energize; the range is 0 through 300 seconds. Table 10 shows factory
setting of each alarm.
Alarm
Delay (seconds)
Low DC Voltage
5
High DC Voltage
5
High Voltage Shutdown
20
Low DC Current
4
Timer Mode
30 for Mode 4
NOTE: All alarms automatically reset when the alarm condition is corrected. However the High Voltage
Shutdown must be reset manually by pressing the HVSD RESET pushbutton on the front panel.
Table 10 – Factory setting for alarm time delays
