Installation Guide

MORNINGSTAR CORPORATION 45
4.0
4.0 OPERATION
44
PRUDENCE: Endommagement de l’équipement
Une surcharge excessive et un dégagement gazeux
trop vigoureux peuvent endommager les plaques de
batteries et provoquer l’élimination du matériau actif des
plaques. Une compensation trop élevée ou trop longue
peut provoquer des dégâts. Examinez les exigences
pour la batterie particulière utilisée dans votre système.
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,
DC appliances, or other electronic devices. The total current
draw of all loads must not exceed the SS-MPPT 15 Amp
maximum load rating.
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CAUTION: Do not wire any AC inverter or other inductive
load such as a motor, pump, compressor or generator to
the load terminals of the SunSaver MPPT. Damage to the
load control circuit may result. Wire inductive loads
directly to the battery or battery bank.
ATTENTION : Ne pas raccorder un inverseur ou autre
charge inductive comme le moteur, pompe, compresseur
ou générateur aux bornes de la SunSaver MPPT. Pourrait
endommager le circuit de commande de charge. Fil de
charges inductives directement sur la batterie ou la
batterie.
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guration for more information.
Current Compensation
All LVD and LVR set-points 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 set-points 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.
LVD Warning
As the battery discharges, the Battery Status LEDs will
transition from green to yellow and then from yellow to
ashing red. The ashing red indication is a warning that a
low voltage disconnect event will occur soon. The amount of
time between a green SOC indication and load disconnect
will depend on many factors including:
• rate of discharge (amount of load draw)
• capacity of the battery
• health of the battery
• LVD set-point
If the battery discharges to the LVD set-point, the load will
disconnect and a solid red Battery Status LED indication will
be displayed.
General Load Control Notes
• Without custom programming, the SunSaver-MPPT
limits regulation voltage due to temperature
compensation to a maximum of 15V (30V @ 24V
nominal). This protects certain DC loads that may be
damaged by high regulated input voltage.
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