Wakeup Mode (Advanced Menu); Mppt Mode (Advanced Menu) - Alpha Group OutBack Power FLEXmax Series Owner's Manual

Wakeup Mode (Advanced Menu)

Wakeup Mode sets the open-circuit voltage (Voc) conditions that cause the charge controller to wake
up during Sleep and Snooze modes. Since environmental conditions impact the open-circuit voltage
of an array, the Voc can be based on the last measured Voc value.
Before changing these values, monitor the system for a week or so using the factory defaults and then
gradually adjust the set points. If the set points are set too high, the charge controller might not wake
up soon enough or often enough, which means a loss of power production.
Wakeup Mode
Amp Settings
ADVANCED MENU
Wakeup Mode
< 0.6 amp
EXIT NEXT AMP
Wakeup Mode
Voltage Settings
ADVANCED MENU
Wakeup Mode
1.5V 05m
EXIT NEXT +VOC -Min

MPPT Mode (Advanced Menu)

This screen allows the user to choose from the following modes:
 Auto Track MPPT mode (default) automatically tracks the PV upon wakeup and then tracks the MPP of the
array. If Auto Restart is set to 1 or 2, the charge controller awakes every 1.5 hours and does an initial
tracking. (See page 52.)
 U-Pick % (Voc) MPPT mode allows the user to manually adjust the MPP tracking limit as a percentage of the
array's open-circuit voltage (Voc). This percentage is displayed in the Park Mpp % Voc screen along with the
current output wattage. (See page 48.) The wattage value changes as the user adjusts the Voc percentage,
letting the user lock in the most advantageous percentage value. U-Pick % acquires a new Voc value every
1.5 hours if Auto Restart is set to 1 or 2.
MPPT Mode
ADVANCED MENU
MPPT Mode
Auto Track
EXIT NEXT nonGT MODE
C
900-0009-01-00 Rev
To adjust the set points in Wakeup Mode:
1. Navigate to the Wakeup Mode screen through the
ADVANCED MENU as instructed in Figure 35.
2. Press <AMP> to adjust the amp setting. Amp values
increment include: 0.2, 0.4, 0.6, 0.8 and 1.0.
3. Press <NEXT> for the voltage settings screen.
4. Press <+VOC> or <-Min> to adjust the voltage and
delay settings.

<+VOC> ranges from 1.5 V up to 9.5 V

<+MIN> ranges from 5 up to 15 minutes
5. Press <NEXT> for the MPPT Mode screen.
To Exit:

Press <EXIT> once to return to the main menu.

Press <EXIT> twice to return to the status screen.
Figure 37 Wakeup Mode
To select the MPPT Mode:
1. Navigate to the MPPT Mode screen through the ADVANCED MENU
as instructed in Figure 35.
2. Press <MODE> to choose an MPPT mode. If the system has an
OutBack grid-interactive inverter with a HUB and system display,
press <nonGT> to change it to <GT>. This will place the charge
controllers in GT mode to allow the inverter to sell excess power.
3. Press <NEXT> to view the Park Mpp screen.
To Exit:

Press <EXIT> once to return to the main menu.

Press <EXIT> twice to return to the status screen.
Figure 38 MPPT Mode – Auto Track
Operation
47