Installation Guide

Introduction
1–6 975-0400-01-01 Revision G
This manual is for use by qualified personnel only.
Figure 1-4 Three-stage Battery Charging Cycle
a
a.An actual charging cycle for a PV-based system that is in use while it is being charged will
likely differ from the cycle represented in Figure 1-4. This is because a PV system’s output
is limited by the amount of solar energy available, and also because DC loads will affect the
charge current and the measured battery voltage.
Float State
Absorption
State
Bulk State
Current
Time
Max Current
Limit
Voltage
Time
Absorption Voltage
Float Voltage
Max Absorb Time - dflt 3 hrs
(adjustable 1 min - 8 hrs )
Bulk/Boost
Voltage
Boost
Timer
1hr fixed
Absorption Exit Current
Threshold = 2% of
programmed AH capacity
Recharge Voltage