Outback Power Systems FLEXmax 80 Owners Manual - Manual (Page 50)

Operation
48 900-0009-01-00 Rev C
 GT allows the FLEXmax to work more effectively with a grid-interactive OutBack inverter. This setting
automatically raises the charge controller’s Float voltage to equal its Absorption voltage. Since the inverter
sells power to maintain its own Float, Absorption, or Sell settings (all of which should be lower than those of
the controller), this mode makes it easier for the inverter to sell power. (See pages 44 and 102 for more
information on this mode.)
 NOTE: The charge controller’s Float voltage returns to normal any time the inverter enters PassThru or
Silent modes. (See the inverter Operator's Manual for inverter modes.)
 The Park Mpp screen will be slightly different between Auto Track mode and U-pick mode. In the U-pick
mode, the Watts will appear in addition to the %Voc value.
Figure 39 MPPT Mode – U-Pick %
The Mpp Range Limit % Voc adjusts the upper range limit of the
FLEXmax controller’s maximum power point (MPP) tracking.
The default Max MPP voltage limit is set at 90% of the Voc and is
normally not adjusted for a PV array. If necessary, the adjustable
limits are 80%, 85%, 90%, and 99% of the Voc.
Min optimizes the tracking window for MPPT. The default Min
setting of 1/2 establishes the lower limit of this window as one-half
the Voc.
The Min range limit setting may be set to FULL if something other
than a PV array is connected to the input of the FLEXmax, such as a
hydroelectric turbine (see page 100). However , the input voltage
must never exceed 150 Vdc at any time.
ADVANCED MENU
Park Mpp
Watts 0251 77 % Voc
EXIT NEXT -% +%
U-pick% Park Mpp
ADVANCED MENU
Mpp Range Limit %VOC
Min Max
EXIT NEXT 1/2 90%
Mpp Range Limit % Voc
To adjust the Park Mpp voltage
percentage settings:
1. Press to view the Mpp
Range Limit % VOC screen.
2. Choose one of the following
options:
 Press <-%> to decrease
the value.
 Press <+%> to increase
the value.
3. Press to advance to the
Mpp Range Limit %Voc screen.
4. Press or to adjust the
MPP range limit.
To Exit:
 Press once to return to the
main menu.
 Press twice to return to the
status screen.
 Press to advance to the
Absorb Time Limits screen.
ADVANCED MENU
MPPT Mode
U-pick%
EXIT NEXT nonGT MODE
MPPT Mode
U-pick%
ADVANCED MENU
Park Mpp
77 % Voc
EXIT NEXT -% +%
Auto Track Park Mpp
ADVANCED MENU
MPPT Mode
Auto Track
EXIT NEXT nonGT MODE
MPPT Mode
Auto Track
ADVANCED MENU
Mpp Range Limit %VOC
Min Max
EXIT NEXT 1/2 90%
Mpp Range Limit % Voc