Outback Power Systems MX60 Installation, Programming, And User's Manual page 84

BULK cycle provides the maximum power to the battery –the voltage increases
while recharging.
A Bulk cycle is automatically initiated when the battery voltage is below the Absorb and Float*
recharge voltage set points. The Bulk cycle will continue until the Absorb voltage set point is
achieved. "BMPPT" is displayed on the screen.
ABSORBING cycle limits the amount of power going to the battery—the voltage is
held constant.
The Absorb cycle will continue for the duration of the Bulk cycle or until the 2 hour (default) Ab-
sorb time limit is reached. For example, if a Bulk cycle takes 1 hour to reach the Absorb voltage set
point, then the Absorb cycle will continue for 1 hour as well. However, if a Bulk cycle takes 3 hours
to reach the Absorb voltage set point, then the Absorb cycle will continue for 2 hours only. A Bulk
cycle will be re-initiated if the battery voltage is not sustained at the Absorb voltage set point.
"Absorbing" is displayed on the screen at this time.
FLOAT cycle reduces the recharging voltage to prevent overcharging of the batteries.
A Float cycle follows after the Absorb cycle is completed; "Float" is displayed on the screen. The
MX60 will not re-initiate another Bulk cycle if the Float voltage set point is not sustained*. F-MPPT
is displayed. However, it will continue to recharge the battery until the Float voltage set point is
reached.
*Note: A Bulk cycle can be auto-initiated if the battery voltage falls below the Float voltage set
point and the Re-Bulk (ReBV) voltage option is set.
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OutBack Power Systems Inc.