Morningstar TRISTAR TS-MPPT-60-600V-48, Инструкция по установке, эксплуатации и обслуживанию, Страница: 25 / 45

49 TriStar MPPT 600V Operator’s Manual 48 Operation
Absorption Extension
1:00 2:00 3:00 4:00 5:00 6:00
50.00 V
Bulk
Extended
Absorption
Float Absorption
Absorption Extension Voltage
time (hrs)
i re sor tion e tension c ar in rofi e
If battery voltage discharges below 50.00 Volts the previous night, Absorption charging will be
e ten e on t e ne t c ar e c c e as s o n in fi re a o e in tes i e a e to t e
normal Absorption duration.
Float Time-Out
1:00 2:00 3:00 4:00 5:00 6:00
Float V
Bulk
Float
Absorption Absorption
60 mins.
below Float
Voltage
time (hrs)
Bulk
i re oat e it ti e o t c ar in rofi e
After entering Float stage, the controller will only exit Float if the battery voltage remains below
oat o ta e or c ati e in tes n fi re a s ste oa t rns on at rs en
the controller is in Float stage, and runs for one hour, until 4:30 hrs. The load current draw
is larger than the charge current, causing battery voltage to drop below Float voltage for 60
minutes. At that point, the controller returns to Bulk charging, and then Absorption stage once
again. In this example, a load runs continuously for 60 min. However, because the Float exit
timer is cumulative, multiple momentary load events that pull the battery voltage below Float
voltage for a combined 60 minutes duration will also force an exit from the Float stage.
Float Cancel Voltage
1:00 2:00 3:00 4:00 5:00 6:00
49.20 V
Bulk Absorption
Float Cancel Voltage
time (hrs)
Float cancelled this charge cycle
i re oat cance e c ar in rofi e
If the battery bank discharges below 49.20 Volts the previous night, Float charging stage will be
cancelled for the next charge cycle. Figure 4-4 above illustrates this concept. At 0:00 hrs (dawn),
battery voltage is below the Float Cancel threshold voltage. The diagram shows where Float
stage would have occurred if Float was not cancelled.
Equalize Time-Out
1:00 2:00 3:00 4:00 5:00 6:00
Absorp. V
Bulk Float Equalize
Equalize timeout
time (hrs)
Equalize V
i re a i e ti e o t c ar in rofi e
e c ar in rofi e in fi re s o s an
Equalize Time-out
event. The time-out timer be-
ins as soon as atter o ta e e cee s t e sor tion o ta e set oint t ere is ins ficient
charging current or system loads are too large, the battery voltage may not reach the Equalize
set-point. Equalize Time-out is a safety feature that prevents high battery voltage for extended
periods of time which may damage the battery.