OutBack Power FLEXmax 100, Owner'S Manual

Page: 42 / 76

MATE3s Screens
42
900-0209-01-00 Rev A
Charge Controller Settings
Charge Controller menu options include the following:
Charger -------------------------------------------------------- > See below.
MPPT
----------------------------------------------------------- >
See page 43
Temperature Compensation ---------------------------- > See page 43.
Battery Equalize -------------------------------------------- > See page 44.
Grid-Tie Mode ---------------------------------------------- > See page 44.
Auxiliary Output
-------------------------------------------- > See page 45.
Calibrate ------------------------------------------------------ > See page 50.
Reset Charge Controller to Factory Defaults ----- > See page 50.
Charger
IMPORTANT:

Battery charger settings need to be correct for a given battery type. Always follow battery manufacturer
recommendations. Making incorrect settings, or leaving them at factory default settings, may cause the
batteries to be undercharged or overcharged.

An appropriate circuit breaker, or overcurrent device, must be used between the battery and the
charge controller.

If a battery remote temperature sensor (RTS) is used, set the Absorb and Float setting voltage based on
a 25°C / 77°F setting.
The charge controller uses a “three-stage” battery charging cycle which utilizes multiple settings. This
menu controls the voltages and timers for the battery charger. See page 67 for an explanation of the
three-stage cycle and a description of individual stages. See page 31 to see what indicators and
messages appear at each stage.
Figure 37 Charger

Absorb Time is adjustable from 0 to 24 hours (consult the battery manufacturer’s recommendations).

When the Absorb Time is reached, the charge controller goes into Float stage and the system display will
show
Float
. When the battery voltage drops below the Float Voltage set point, the charge controller will
return to MPP operation to draw more PV energy to maintain this set point.
Set Points:

Absorb Voltage – Target voltage for bulk stage.
Utilizes constant-current charging.

(Absorb) Time – Amount of time held at Absorb
voltage. Utilizes constant-voltage charging.

Float Voltage –
Final stage after completion of charge.
Utilizes constant-voltage charging.

Rebulk Voltage – Low voltage trigger for new charge.

Current Limit –
Maximum DC amps from that
controller.

Absorb End Amps – Low current that indicates
completed charging. It triggers Float stage regardless
of Absorb time.