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©2009 Magnum Energy Inc.
Setup
3.0 Adjusting the ME-SBC
TM
The above diagram represents a typical three-stage charging pro
fi
le. The
fi
rst
of the three stages is Bulk Charge. This is where up to 80% of the charging
is accomplished. During this stage the battery voltage increases signi
fi
cantly
and the current that the charging source is providing to the
Main Battery
is at a maximum. The second stage is Absorption, during this stage the bat-
tery voltage is held at the Absorption voltage for a period of time. By the end
of this process the charge on the battery bank is about 95% complete. The
third and
fi
nal stage is Float. In this stage, the remainder of the charging
is accomplished. As long as the
Main Battery
voltage is between the
Low
Voltage Disconnect
and the
High Voltage Disconnect,
and the
Main bat-
tery
voltage is above the
Connect Voltage
, the ME-SBC
TM
will pass charging
current through to the
Auxiliary Battery
.
The ME-SBC
TM
combining setpoints as follows:
Connect Voltage:
(Settable: 12.8-13.8 VDC) adjusts the point at which the ME-
SBC
TM
passes the charge from the
Main Battery
bank to the
Auxiliary Battery
bank
or vice versa. This setting is not active until a charging source is applied to one of the
batteries and the voltage begins to increase. Once this setpoint has been reached, the
ME-SBC
TM
will automatically start to pass the charge current through to the other bat-
tery.
Default = 12.8 / 25.6 VDC (12V /24 V system)
Low Voltage Disconnect:
(Settable: 12.5-13.5 VDC) once the charging process has
begun and the battery voltage has exceeded the
Connect Voltage
setpoint, the
Low
Voltage Disconnect
becomes active. If the voltage begins to decrease, this is the
point at which the ME-SBC
TM
disconnects and stops passing charge current through to
the other battery.
Default = 12.5 / 25.0 VDC (12V /24 V system)
High Voltage Disconnect:
(Settable: 14.0-15.0 VDC) This setting should be used to
prevent the ME-SBC
TM
from passing through too high of a voltage from one battery to
other. If this voltage is reached, the ME-SBC
TM
disconnects the batteries and prevents
the high voltage from affecting the other battery.
Default = 14.0 / 28.0 VDC (12V /24
V system)
Figure 3-1, Battery combining setpoints
H igh V oltage
D is c onnec t
C onnec t V oltage
D is c onnec t
Low V oltage
D is c onnec t
A bs orption Float
B attery V oltage
- C onnec ted
B ulk
