4.0 OPERATION
MORNINGSTAR CORPORATION
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4.0
absorption stage for 3 or 4 hours before transitioning to the
oat stage.
Equalize (
ooded battery type only)
If the auto-equalize feature is enabled, the SS-MPPT
will equalize a
ooded battery for three (3) hours every 28
days. Equalize charging raises the battery voltage above
the standard absorption voltage so that the electrolyte
gasses. This process prevents electrolyte strati
cation and
equalizesthe individual cell voltages within the battery.
4.4 Load Control Information
The primary purpose of the load control function is to
disconnect system loads when the battery has discharged
to a low state of charge and reconnect system loads when
the battery is suf
ciently recharged. System loads may be
lights, pumps, motors, DC appliances, and other electronic
devices. The total current draw of all loads must not exceed
the SS-MPPT 15 Amp maximum load rating.
!
CAUTION: Do not wire an AC inverter of any size to the
load terminals of the SunSaver MPPT. Damage to the
load control circuit may result. Wire inverters directly to
the battery or battery bank.
Load Control Settings
Load control is fully automatic. Choose between two (2)
factory Low Voltage Disconnect (LVD) and Low Voltage
Reconnect (LVR) settings by adjusting switch #2. See
Section 3.2 Con
fi
guration
for more information.
Current Compensation
All LVD and LVR setpoints are current compensated.
Under load the battery voltage will sag in proportion to the
current draw of the load. A short-term large load could cause
a premature LVD without the current compensation feature.
LVD and LVR setpoints are adjusted lower per the following
table.
System Voltage
Current Compensation
12 Volt
-15 mV per amp of load
24 Volt
-30 mV per amp of load
Table 4. Current compensation values.
