ALARM MENU
16 February 2011 / MasterShunt / EN
9 ALARM MENU
The MasterShunt features six different alarm
parameters which can be configured to custom
chosen values. If the alarm conditions are met, i.e. if
the chosen value has been reached, the MasterBus
based alarm function can trigger different tasks. For
instance if the parameter “Battery low” has been set
to 35% and the battery voltage is being discharged
to this value, the alarm can trigger a generator to
start and recharge the battery. See also chapter 12,
Event 1 and 2.
Message Description
General
Voltage high When the battery voltage rises above the high voltage level (15V preset value), the alarm
function will be triggered without delay.
Fuse alarm This function is triggered when the internal MasterShunt fuse has blown.
Battery low This function will be triggered when the State Of Charge (SOC) drops below a preset value,
35% default. At this value for instance the refrigerator can be switched off to save the
battery when other systems fail to recharge it sufficiently.
Voltage low If the battery voltage drops below a preset value, 10V default, this alarm is triggered.
Battery pre low To prevent the battery from draining, a SOC value above Battery low can be set (40%
default). At this level for instance a generator can be started to recharge the batteries.
Voltage pre low To prevent the battery from becoming discharged too deeply, a value above Voltage low
can be set (11V default). At this event for instance a heavy consumer can be switched off.
Refer to chapter 11 for alarm settings.
Figure 17: Battery alarm function
Battery voltage
State of Charge
State of Char
e
Battery voltage
35%
80%
100%
10,0/20,0/
40,0V
LOW DELAY
Time
SOC FULL
LOW VOLTAGE
SOC LOW LEVEL
Alarm function
activated
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