E2620 Auxilliary Power Unit User Guide
Battery Monitor
The battery monitor provides a switch function, a monitor
function, and a warning function. The switch has Off, Standby,
and On settings. When Off, the system draws no power. In
Standby mode, only the battery monitor is on, and the battery
voltage (VB), the battery guard output voltage (VG), and the
internal temperature (in ‘C) are displayed in sequence. The
battery voltage includes a bargraph display indicating the
remaining battery capacity. Each bar represents 10% starting
from 100%, so eight bars represent 100% capacity, and a single
bar represents 30%. There are two LEDs on the battery monitor.
The red LED turns on when the battery guard has turned off due
to the battery voltage dropping below the programmed
threshold; the inverter will also be off at this point. The orange
LED is a graceful low voltage warning which flashes faster as the
battery voltage drops beyond 20% capacity. Its purpose is to alert
the operator that the battery will soon be depleted and that the
connected equipment will also soon be shut off. The rate of
battery depletion and the remaining time to seek a battery
recharge and equipment reconnection to an alternate 120VAC
outlet will depend on the equipment load.
The connector for the battery monitor is located behind the
access door at the rear of the unit, and located between the
inverter and the charger. Normally the battery monitor cable
remains connected.
Installation
It is recommended that the APU unit and battery monitor be
installed by a professional installer with regard to the specific
installation requirements.
7
This device is not authorized for use with any product where the failure or malfunction of
this device can reasonably be expected to cause injury or death. This device is not
authorized for use in any life support system due to the risk of injury or death.
