Merlin SmartGauge Installation And User Manual page 17

Merlin Power Systems
On selecting "PA T" the display will flash to show this
selection was written to memory. The display will then
show "xx" which is the charge status below which the
actual battery charge status will have to fall in order to
trigger (activate) the alarm output. This is the
activation status. The factory default for this value is
50%.
Pressing the SELECT button will scroll this value up to
and including 75%. It will then cycle to 1 and continue
to scroll upwards.
When the desired value is displayed, press the SET
button to write the value to memory, the display will
flash as usual. The activation value is now set. Note
that this value shares the same memory as that used
for the normal low status alarm. So changing one, will
change the other.
The display will now show "tx.xx", indicating the time,
in hours and minutes, that the alarm will remain
activated. The default is 4 hours. However, if an alarm
of this type is actually active when you enter the set-up
menu (i.e. the alarm LED is on), then this figure will be
the current time remaining, on the current countdown
timer, rounded to the nearest 15 minutes. This enables
the user to increase or decrease the remaining time for
an existing alarm timer run.
Pressing the SELECT button will increase this time in
steps of 15 minutes up to a maximum of 9 hours and 45
minutes at which point the display will wrap round to
15 minutes then continue cycle up.
Once the desired time is reached, pressing the SET
button will, as usual, cause the display to flash, the
value will be written to memory and the display will
move on to the next item in the set-up menu.
If an alarm is not active at the time you enter the set-up
menu then this time period will become the default
time period for all future timed status alarms.
Remember, changing the alarm type will cancel any
currently active alarms. Be aware that if this menu item
is entered while a timed alarm run is active, and it
therefore shows the time remaining on the current run
(as opposed to your default run time), then only the
time remaining on the current run will be affected.
The normal full time for a timed alarm run will not be changed and will remain as you last set it (or at
the factory default if no changes have been made). It is not possible to change the default run time
whilst a timed alarm run is active. Note that this timed period is approximate. The timed period and
the display will be accurate to within about 10%. Also, note that internally SmartGauge counts in
seconds whereas the display only shows the minutes.
It is rounded to the nearest minute so when the display counts down and reaches zero, there could
in fact be 30 seconds remaining.
SmartGauge Installation and User Guide
Page 17
version: 2.0.2