Outback Power Systems FLEXmax Extreme Owners Manual - Manual (Page 38)

MATE3 Screens
36 900-0150-01-00 Rev A
Charge Controller Settings
Charge Controller menu options include the following:
Charger -------------------------------------------------------------- > See below.
MPPT ----------------------------------------------------------------- >
See page 37
Temperature Compensation---------------------------------- >
See page 38.
Battery Equalize -------------------------------------------------- >
See page 38.
Grid-Tie Mode ---------------------------------------------------- >
See page 38.
Auxiliary Output -------------------------------------------------- >
See page 39.
Restart Mode ------------------------------------------------------ >
See page 45.
Calibrate ------------------------------------------------------------ >
See page 45.
Reset Charge Controller to Factory Defaults ------------ >
See page 45.
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 71 for an explanation of the three-stage cycle
and a description of individual stages. See page 25 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 MATE3 will display
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.