Morningstar TRAKSTAR TS-MPPT-60-600V-48, Руководство пользователя

Страница: 25 / 46

49 TriStar MPPT 600V Operator’s Manual 48 Operation
Battery Charging Settings
The details of the TriStar MPPT 600V battery charging settings are shown in tables 4-1 and 4-2
below. All voltage settings listed are for nominal 48 Volt battery banks.
Settings
Switches
4 - 5 - 6
Battery
Type
Absorp.
Stage
(Volts)
Float
Stage
(Volts)
Equalize
Stage
(Volts)
Absorp.
Time
(Minutes)
Equalize
Time
(Minutes)
Equalize
Interval
(Days)
off-off-off 1 - Gel 56.00 54.80 150
off-off-on 2 - Sealed* 56.60 54.80 57.60 150 60 28
off-on-off 3 - Sealed* 57.20 54.80 58.40 150 60 28
off-on-on 4 - AGM/Flooded 57.60 54.80 60.40 180 120 28
on-off-off 5 - Flooded 58.40 54.00 61.20 180 120 28
on-off-on 6 - Flooded 58.80 54.00 61.60 180 180 28
on-on-off 7 - L-16 61.60 53.60 64.00 180 180 14
on-on-on 8 - Custom Custom Custom Custom Custom Custom Custom
* “Sealed” battery type includes gel and AGM batteries
Table 4-1. Battery charging settings for each selectable battery type
Shared Settings Value Units
Absorption Extension Voltage 50.00 Volts
Absorption Extension Time
Absorption Time +
30
minutes
Float Exit Time-out 60 minutes
Float Cancel Voltage 49.20 Volts
Equalize Time-out Equalize Time + 60 minutes
Temperature Compensation Coefficient* - 5
millivolts /
°C / cell
* 25°C reference
Table 4-2. Battery settings that are shared between all battery types
The TriStar MPPT 600V provides seven (7) standard battery charging settings that are selected
with the settings switches (see Step 9 in the Installation Section). These standard charging set-
tings are suitable for lead-acid batteries ranging from sealed (gel, AGM, maintenance-free) to
Flooded and L-16 cells. In addition, an 8th charging setting provides for custom set-points us-
ing MSView
TM
PC software. Table 4-1 above summarizes the major parameters of the standard
charging settings.
The shared settings in table 4-2 are common to all battery types. The following charging profiles
graphically explain the shared settings:
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)
Figure 4-2. Absorption extension charging profile.
If battery voltage discharges below 50.00 Volts the previous night, Absorption charging will be
extended on the next charge cycle as shown in figure 4-2 above. 30 minutes will be added to the
normal Absorption duration.
Float Time-Out
1:00 2:00 3:00 4:00 5:00 6:00
Float V
Bulk Float
Sub-
Float
Absorption Absorption
60 mins.
below Float
time (hrs)
Bulk
Figure 4-3. Float exit time-out charging profile
After entering Float stage, the controller will only exit Float if the battery voltage remains below
Float voltage for 60 cumulative minutes. In figure 4-3, a system load turns on at 3:30 hrs when
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.