Instruction Manual

Introduction
1–10 975-0400-01-01 Revision H
This manual is for use by qualified personnel only.
Auxiliary Output Functions
The solar charge controller has a configurable auxiliary output (producing 5 to 13
volts at up to 200 milliamps) 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
perform only one function at a time.
See “Configuring the Auxiliary Output” on page 3–13 for information about
auxiliary output trigger sources and how to enable and configure the auxiliary
output for your application.
Load Control
The solar charge controller auxiliary output can be configured to drive a relay to
disconnect or reconnect loads depending on battery voltage. This load control
function enables the solar charge controller to help prevent damage to the
battery due to over-discharge during periods of poor charging (due to ambient
temperature, for example) or excessive loads.
Vent Fan
The solar charge controller auxiliary output can be configured to power a small
DC fan to clear a battery compartment of harmful gases. The solar charge
controller auxiliary output must be configured to activate when the 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 solar charge controller fault.
NOTICE
EQUIPMENT DAMAGE
Do not connect a high amperage device to the auxiliary output. The auxiliary
output is intended only to energize a low-current circuit such as a relay coil.
Connecting to a high-amperage device will open the fuse in the common line
and possibly damage the unit.
Failure to follow these instructions may damage the equipment.