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Conext SW4048 4,000W 48V Installation

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Table Of Contents
Introduction
1–10 975-0638-01-03
Enhanced AC Support Charging Stages
• BULK Phase - During this phase, all PV energy from the charge controller is
diverted to the battery for maximum charging. During this phase, the Conext
SW does not engage AC support.
• ABSORPTION Phase - Once the charge controller is in absorption phase,
the charge controller output is split between the battery and Conext SW for
supporting AC loads. As the battery approaches full charge, more power
from the charge controller is diverted to Conext SW for AC support.
• FLOAT Phase - Once the battery is full and the charge controller transitions
to float phase, almost all the charge controller output is used by Conext SW
to support AC loads. The battery only receives a trickle charge to maintain a
healthy state of charge.
See “Enhanced AC Support Setting” on page 4–31.
Regular AC Support without Xanbus devices
If no Xanbus-enabled devices, such as an MPPT charge controller, are
connected to the power system, then entry and exit into AC support mode is
based solely on battery voltage monitored by Conext SW. If the battery voltage is
above a set limit (AC Supp Volts), then AC support mode is engaged.
Figure 1-5 Enhanced AC Support Charge Cycle