Owner's Guide

the highest reported temperature will be used as the battery temperature for the
temperature compensation value of the battery charge algorithm.
Equalization Charging
The charge controller can provide the battery bank with an equalization charge.
Equalization is a deliberate overcharge designed to return each battery cell to optimum
condition by reducing sulfation and stratification in the battery. The equalization charge is
generally performed only on flooded, vented (non-sealed or “wet”) lead-acid batteries, as
recommended by the battery manufacturer.
NOTICE
BATTERY DAMAGE
Read, understand, and follow all cautions and warnings concerning equalization charging.
For more information, see Equalizing Batteries on page 55.
Failure to follow these instructions can result in equipment damage.
Auxiliary Output Functions
The charge controller has a set of auxiliary relay contacts—one normally opened (NO)
and one normally closed (NC)—that can be used to drive a relay for load control or to turn
on devices such as vent fans or indicator alarms. The auxiliary output can be configured
to trigger under only one condition at a time. See Configuring Peak Power Tracking on
page 36 for information about auxiliary output trigger sources and how to enable and
configure the auxiliary output for your application.
Load Control
The charge controller’s auxiliary output can be configured to disconnect or reconnect
loads depending on battery voltage. This load control function enables the charge
controller to help prevent damage to the battery from over- discharge during periods of
poor charging (insufficient sunlight, for example) or excessive loads.
Vent Fan
The charge controller’s auxiliary output can be configured to trigger a small DC fan to
clear a battery compartment of harmful gases. To do this the charge controller’s auxiliary
output is configured to activate when flooded batteries reach their gassing voltage.
Alarms
The auxiliary output can be configured to trigger an alarm or indicator light when a pre-set
condition occurs, such as low or high battery voltage, high PV array voltage, or a charge
controller error condition.
Conext MPPT 80 and Conext MPPT 100 Owner’s Guide Introduction
27 This document is for use by qualified personnel 990-6214B