ChargeMaster Plus 24/80-2, 24/110-2
–
User and Installation Manual
23
4
Blinking fast
green
Battery 2 in bulk stage
Blinking slow
green
Battery 2 absorption
stage
Solid green
Battery 2 in float stage
5
Blinking
green
Network
communication
OUTPUT POWER MENU
LED State
Meaning
1
Solid orange Output power menu
2
Solid orange
Total output power 0-
25%
3
Solid orange
Total output power 26-
50%
4
Solid orange
Total output power 51-
75%
5
Solid orange
Total output power 76-
100%
ERROR MENU
LED State
Meaning
What to do
1
Blink fast
red
Error menu
2
Blink fast
red
Reverse
polarity
Check battery
connection
3
Blink fast
red
AC error
Check AC
voltage/fre-
quency
4
Blink fast
red
DC error
Check battery
voltage
5
Blink fast
red
Temperature
sense error
Check
temperature
sensor
5.4
The 3-step+ charge process
Battery charging is accomplished in three
automatic stages:
BULK
,
ABSORPTION
and
FLOAT
.
The first step is the
BULK
phase, in which the
output current of the charger is 100%, and the
greater part of the capacity of the battery is
rapidly charged. The current charges the
batteries and gradually the voltage rises to the
BULK
voltage 28.5V at 25°C/77°F.
The duration of this phase depends on the ratio
of battery to charger capacity, and the battery
state of charge.
Figure 6: 3-step charge process
The
BULK
phase is followed by the
ABSORPTION
phase. Absorption charging starts when the
voltage on the batteries has reached the
BULK
voltage and ends when the battery is completely
full. Battery voltage remains constant at 28.5V at
25°C/77°F throughout this stage, and the charge
current depends on the degree to which the
battery was initially discharged, the battery type,
the ambient temperature, etc. With a flooded
battery this stage lasts approx. 4h, with gel and
AGM around 3h. Once the battery is 100% full,
the ChargeMaster Plus automatically switches
over to the
FLOAT
phase. In
FLOAT
, the
ChargeMaster Plus switches to a stabilized 26.5V
(Flooded), 27.6V (Gel/AGM) or 27V (MLI) at
25°C/77°F.
Connected DC loads are powered directly by the
charger. If the load exceeds the charger
capacity, the required additional power comes
from the battery, which will be progressively
discharged until the charger automatically
switches back to the bulk phase. Once
consumption decreases, the charger goes back
to normal operation of the 3-step charge system.
As the ChargeMaster Plus is equipped with a 3-
step+ charge system, the batteries can also
remain connected to the ChargeMaster Plus
during winter. One hour every 14 days the
charger automatically switches to absorption to
keep the battery running properly and prolong its
life span. The three-step plus charge system is
also safe for all the connected equipment. See
also Figure 9 on page 30.