MLI Ultra 12/1250, 24/1250 – User and Installation Manual
Internal temperature of the MLI Ultra is
too high
See Configuration tab - Event levels
for adjustment of the threshold level
Internal temperature of the MLI Ultra is
too low
See Configuration tab - Event levels
for adjustment of the threshold level
Battery or cell voltage is too low.
See Configuration tab - Event levels
for adjustment of the threshold level
Last time the MLI Ultra was fully
charged
See Configuration tab - Event levels
for adjustment of the threshold level
Switch open event occurred
Switch close event occurred
Battery over current event occurred
Event commands
When the MLI Ultra is configured as an event target by another device, this device can initiate an event
command and an event action to be performed by the MLI Ultra.
The battery switch will be closed.
The battery switch will be opened.
Closure of relay wire pair 4&5 of the auxiliary cable.
Opening of relay wire pair 4&5 of the auxiliary cable.
Turn on the heater of the MLI Ultra (provided that the temperature of the MLI Ultra
is below 0°C [32°F]).
Stop Charge event
Before the battery reaches the limits of the operating specifications, the Stop Charge event is triggered.
When configured, this event forces the Mastervolt charger to switch to the float stage. The charger will
use a lower charger voltage or, in case of parallel connection, switch off. The event will be active for 10
minutes.
WARNING!
If multiple charging devices are used to charge the battery (for instance both an AC powered
charger and an alternator) then the Stop charge event must be configured for each charging
device. The settings depend on the used charger because different chargers have different state
options. Check the manual of the used charger for how to switch the charging state.
In case of a battery bank, this must be done for each battery.
Stop charge can also be selected by setting DIP switch 3 ON. In this case, all connected Mastervolt
chargers will stop charging when a 'Stop charge'-condition is met.
How to activate MasterBus powering
1. First, make sure that DIP switches 1 and 2 are ON.
2. Secondly, to select the option, open MasterAdjust on a notebook/laptop or PC, connected to the
MasterBus network via a USB Interface.
a) Right-click the MLI Ultra and select Login.
b) Select Installer and enter the installer code.
c) Go to the Configuration tab.