Outback Power Systems FLEXmax 80 Owners Manual - Manual (Page 23)

Operation
900-0009-01-00 Rev C 21
Table 1 Battery Voltage and Charge Timer
Battery Voltage ChgT (Charge Timer) Activity/Display
 12.4 V, 24.8 V, 37.2 V, 49.6 V, or 62.0 V,
and less than the Absorbing voltage
No change.
<12.4 V, 24.8 V, 37.2 V, 49.6 V, or 62.0 V For every minute elapsed, 1 minute is
subtracted from the timer
<12.0 V, 24.0 V, 36.0 V, 48.0 V, or 60.0 V For every minute elapsed, 2 minutes is
subtracted from the timer
< 11.6 V, 23.2 V, 34.8 V, 46.6 V, or 58.0 V For every minute elapsed, 4 minutes is
subtracted from the timer.
Auto Start (Auto ReStart)
This setting allows the user to choose between continuous MPP tracking or occasional restarts of the
sweeping process. A restart means the controller abandons the existing maximum power point and
“re-sweeps”, or begins gathering new power point data. See page 52 for more information.
 Mode 1: Once every 1.5 hours in the Bulk charging stage
 Mode 2: Once every 1.5 hours in the Bulk, Absorbing and Float recharging stages
 Mode 0: Auto ReStart is disabled completely. It will continously track the maximum power point without
starting over.
NOTE: If enabled, AutoStart also occurs during the MPPT EQ cycle. See page 23.
BatTmpErr
The battery temperature sensor is shorted or damaged. The charging voltage will not be temperature
compensated and the cooling fan will continuously operate. See the section on RTS compensation on
page 50.
BatTooHot
The battery temperature sensor has detected a battery temperature of over 50°C. The FLEXmax will
stop charging the battery and wait for the battery to cool below 50°C.
Charged
There is an external DC source other than PV keeping the battery above the Float voltage set point
(see page 26). The FLEXmax will stop charging because it is not needed. The display may also appear
when the cycle is transitioning from Absorbing (upper target voltage) to Floating (lower voltage).
EQ
The charger is in a cycle of equalization. (See page 42.) This is the time elapsed in hours and minutes
since the BATTERY EQUALIZE VOLTS set point was met.
If this set point is not maintained, the controller will revert back to MPPT EQ. (See page 23.) The EQ
timer will pause until the batteries are regulated at the BATTERY EQUALIZE VOLTS set point again.
The paused time can be viewed in the End-of-day Summary screen (see page 18).
EQ Done
Once the set EQ time (between 1 and 7 hours) has successfully completed, the FLEXmax will transition
to Float stage. EQ Done will be displayed either until a button is pressed or the next morning’s
wakeup. The FLEXmax will transition to Float stage at the end of the completed equalization cycle.