Installation Guide

Features
The Conext MPPT 80 or MPPT 100 Solar Charge Controller (charge controller) tracks the
maximum power point of a PV array to deliver the maximum available current for
optimum charging of batteries. The charge controller can be used with 24 VDC and 48
VDC battery systems only.
Key product features include a 600 VDC maximum input voltage, a Fast Sweep™ MPPT
tracking algorithm, and built-in ground fault protection. For information on additional
product features, see the Conext MPPT 80 and MPPT 100 Owner's Guide (document
part number: 990-6214).
The high input voltage operating range allows a high-voltage and low-current PV array to
be connected to the charge controller. A high-voltage PV array configuration can
eliminate the need for a combiner box and associated DC circuit breakers as well as
incorporate the use of smaller AWG wire for array wiring. This simplified array
configuration reduces wiring costs, installation labor costs, and allows for long home-run
wiring with minimal power loss.
The Fast Sweep MPPT algorithm frequently conducts a very fast sweep of the full
operational array voltage window to dynamically determine the array’s maximum power
point. This feature optimizes the high energy harvest of the solar array, regardless of
conditions such as temperature or shading.
The charge controller is equipped with built-in ground fault protection for a negative,
positive, or ungrounded PV array and is compatible with all PV module manufacturers.
The charge controller regulates the available power from a PV source only. It is not
designed to regulate power from other types of power sources.
The charge controller can be installed with a Conext SWInverter, Conext XW+ or
Conext XW Pro Inverter/Charger, or as a stand alone battery charger. For PV rapid
shutdown and arc fault detection functions, the charge controller can be installed with the
MPPT Disconnect RS. To configure the charge controller, a Conext System Control
Panel (SCP) or Conext Gateway is also required (see Accessories on page 63 for
product part numbers). While both the SCP and Conext Gateway provide status
information and configuration capabilities, the Conext Gateway provides additional
access to configuration settings through a web interface.
Conext MPPT 80 and MPPT 100 Installation Guide Introduction
19 This document is for use by qualified personnel 990-91319