Minuteman ETR1000LCD, User Manual

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SYSTEM OVERVIEW

This Line-Interactive UPS protects computers, servers, telecom systems, VoIP sys-
tems, security systems, and a variety of electronic equipment from blackouts, brown-
outs, overvoltages, and surges.  The AVR function continuously corrects the volt-
ages, in-between the brownout and overvoltage transfer points (90 - 140VAC), to a
safe usable level.  When the UPS is operating in the AVR mode the audible alarm
will remain silent and the AC normal mode indicator will blink.  During normal AC
operation, the UPS will quietly and confidently protect your system from power
anomalies.

The UPS will charge the batteries with the UPS in the on or off position when the
UPS is plugged into the wall outlet and there is an acceptable AC voltage present
(90 - 140VAC).  When a blackout, brownout, or an overvoltage condition occurs;
the UPS will transfer to the battery mode, the On Battery indicator will illuminate and
the audible alarm will sound once every ten seconds indicating that the commercial
power is lost or unacceptable.  When the commercial power returns or is at an
acceptable level, the UPS will automatically transfer back to the AC normal mode
and start recharging the batteries.  During an extended outage when there is ap-
proximately two minutes of backup time remaining the audible alarm will sound
twice every five seconds.  This Low Battery Warning is informing the user that they
should save all open files and turn off their computer.  When the batteries reach the
predetermined level the UPS will automatically shutdown protecting the batteries
from over discharging.  Once the commercial power returns the UPS will automati-
cally restart, providing safe usable power to the connected equipment and start
recharging the batteries.

TURNING THE UPS ON / OFF

To turn the UPS on: press and hold the On/Off/Test Button until the alarm sounds
one beep and then release.  The UPS will perform a five second internal self-test.
Once the UPS has passed its internal self-test the UPS will provide an output and
the load will be powered.  To turn the UPS off:  press and hold the On/Off/Test
Button until the alarm sounds one beep and then release.

TEST BUTTON

To perform a ten-second user invoked battery test:  With the UPS in the AC normal
mode, press and hold the On/Off/Test Button until the alarm sounds four beeps, and
then release.  During the test, the UPS will switch to the Battery mode, the On-
Battery icon will illuminate and the alarm will sound.

Chapter 4:  Operation

SELF-TEST

The self-test feature is useful to verify the correct operation of the UPS and the
condition of the batteries.  The start-up and user invoked test are used to measure
the battery’s capability to support the connected load.  If the UPS fails one of these
tests, one of the icons or the information displayed on the LCD will remain illumi-
nated indicating the type of problem.  

NOTE: 

 The UPS will automatically perform a

self-test on start-up.

SCROLL BUTTON

Press the Scroll Button to scroll through the UPS parameters.  The UPS param-
eters are displayed on the LCD screen.

LCD SCREEN

The LCD provides the user with a variety of useful information.  The LCD has a real-
time meter to display, in numeric fashion, the following data:

Input Voltage and Frequency
Output Voltage and Frequency
Connected Load KVA and KW
Estimated runtime in the AC and DC mode
Connected Load Capacity Bar Graph
Battery Capacity Bar Graph

The LCD will include dedicated icons for the following information:

AC Normal / AVR Mode (Boost: The AC Normal icon will flash)
On Battery
Weak/Bad Battery
UPS Fault
Site Wiring Fault
Overload

The LCD backlight that will turn on when the UPS is turned on.  After approximately
20-seconds the backlight will turn off to conserve energy.  When an event (alarm)
occurs, such as going to the battery mode, the backlight will turn on for approxi-
mately 20-seconds to alert the user that an event has occurred and then the back-
light will turn off.  While the Scroll button is in use the backlight will remain on.  Ap-
proximately 20-seconds after the Scroll button has stopped being used the back-
light will turn off to conserve energy.

ALARM SILENCER BUTTON

When the unit is operating in Battery mode, pressing the Alarm Silencer Button will
silence the audible alarm.  Once the UPS reaches the LBW (Low Battery Warning)
threshold the alarm will be re-activated.  The alarm cannot be silenced during the
LBW alarm or any fault condition.  Once the UPS transfers to the AC mode the
alarm will be reset to default.