Morningstar TriStar MPPT Series, Инструкция по установке, эксплуатации и обслуживанию

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36 Operation
4.2 Battery Charging Information
4-Stage Charging
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battery charging. Figure 4-2 shows the sequence of the stages.
NIGHT
NIGHT
BULK
CHARGE
ABSORPTION
FLOAT
EQUALIZE
VOL
T
AGE
TIME
Figure 4-2. TriStar MPPT 150V Charging Algorithm
Bulk Charge Stage
In Bulk charging stage, the battery is not at 100% state of charge and battery voltage has not yet
charged to the Absorption voltage set-point. The controller will deliver 100% of available solar
power to recharge the battery.
Absorption Stage
When the battery has recharged to the Absorption voltage set-point, constant-voltage regulation
is used to maintain battery voltage at the Absorption set-point. This prevents heating and exces-
sive battery gasing. The battery is allowed to come to full state of charge at the Absorption volt-
age set-point. The green SOC LED will blink once per second during Absorption charging.
The battery must remain in the Absorption charging stage for a cumulative 120 - 150 minutes,
depending on battery type, before transition to the Float stage will occur. However, Absorption
time will be extended by 30 minutes if the battery discharges below 12.5 Volts (25 Volts @24 V,
50 Volts @48 V) the previous night.
The Absorption set-point is temperature compensated if the RTS is connected; otherwise,
voltages set-points are based on the reference of 25
º
C .
.