MASTERBUS
EN / Alpha alternator - Alpha Pro II regulator / November 2012
23
6.3.7
Keep alive function
The Keep alive function is meant to keep the field
current at least at a value that is detectable by the
rpm meter. So if the number of revolutions
decreases, the field current does not drop below this
level.
6.3.8
Small engine function
If you have a small engine, this option limits the
charge current in a selected number of revs interval.
This enables a smaller engine to rev up so it will not
stall as a result of the high torque required to provide
the charge current. At the lower limit of this interval
the charge current is 20%, at the higher limit it is
100%.
6.3.9
Unlocking configuration
To change the Alpha Pro II MasterBus configuration,
it must be unlocked. With the configuration unlocked,
the regulator has stopped regulating and its LEDs
start blinking twice alternately. After you finished
configuration, you need to lock it before the regulator
restarts regulating.
6.3.10 MasterShunt connected
With a MasterShunt connected, many things are
different using the Alpha Pro II regulator.
1.
There are two options to place a temperature
sensor. The MasterShunt temperature sensor is
preferably placed onto the battery, the Alpha
Pro sensor onto the alternator.
2.
In the Alpha Pro II configuration, the
MasterShunt must be selected
3.
Absorption Return Amp is added in the
configuration. This is the charge current at
which the regulator starts the minimum
absorption timer. This value is calculated from
the
MasterShunt
Amp=Full
percentage,
multiplied by its entered Battery capacity.
4.
The MasterShunt may have a battery voltage
setting that differs from the Apha Pro II voltage
setting. In this case a MasterShunt Mismatch
alarm is shown on MasterBus.
CAUTION:
If the Battery voltage was set User
defined, there will be no MasterShunt
Mismatch alarm when the MasterShunt
has different voltage settings!
6.3.11 Start Float SOC
Percentage of the maximum State of Charge to
enter Float stage. This setting can be used to save
the batteries at higher SOCs as they are not
constantly subject to the higher Absorption voltage.
Further, during a long trip the engine can be
reserved for propulsion rather than charging the
batteries immediately.
