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5) SYSTEM HELP -- Displays the same information that the HELP key displays. Use the SELECT key
to return to the MAIN MENU display.
6) MAN BATTERY TEST -- Displays the manual battery test that can be performed by the operator on
the UPS batteries. This test is used to determine the health of the batteries. Current needs to be
drawn from the batteries in order to determine if they still have sufficient capacity to back up a
critical load in the event of a power failure. The UPS must be operating from the AC line in order for
this test to be performed. During this test, the UPS draws current from the batteries and monitors
the voltage across the batteries. From this data, the UPS determines an approximate charge
capacity of the batteries. In the case where there is no load on the UPS, the UPS will send the
power drawn from the batteries back to the utility. Section 5.3.4 goes into greater detail concerning
the Manual Battery Test LCD display.
7) VIEW HISTORY -- To display historically stored events, select this option. This function allows the
operator to display the total hours of UPS operation, along with any events that have occurred. The
UPS stores in battery backed up memory the last 20 times the UPS output has either powered on
or powered off. The UPS also stores the last 20 times an abnormal shutdown occurred, the last 50
times the UPS detected a problem with the AC line causing it to remove itself from the AC line, the
last 20 times an overload occurred, the results of the last 20 automatic quick battery tests, and the
results of the last 20 automatic capacity battery tests. The operator may view these events on the
LCD display by selecting one of these options. To scroll through the events, press to move up in
the list, or to move down. The most recent event will appear at the top of the list as item 1, with
the other events listed as they occurred in time. ESCAPE will return you to the VIEW HISTORY
screen, while SELECT will return the LCD display to the MAIN MENU screen. Refer to the
Troubleshooting section of this manual for additional details about the information displayed by this
function.
8) SET DATE/TIME -- This function allows the date, time, or weekday kept by the UPS to be changed
by the operator. The date and time are used by the UPS historical storage function to indicate when
a particular event occurred. The weekday is used by the automatic battery test to determine which
day of the week a test is to be performed. Selecting this display will result in a menu that asks if you
want to change the date, the time, or the weekday. Press the number key corresponding to the
parameter you wish to change ( for DATE, for TIME, or
for WEEKDAY) followed by the
ENTER key.
A new date is entered by using the numeric keypad to input a 2 digit month (01 through 12, followed
by a 2 digit day (01 through 31), followed by a 2 digit year (94 through 99 for 1994 through 1999,
and 00 through 90 for 2000 through 2090). Note that after each 2 digit entry, the "/" delimiter is
automatically displayed for you. Also note that you must enter two digits for each item. An example
of entering the date February 4, 1998 would be to enter 02 (for the month), followed by 04 (for the
day), followed by 98 (for the year), followed by the ENTER key. If entered correctly, no error
message will be displayed and the date in the upper left corner of the display will change to the date
that you entered. If you change the date, you may also need to change the weekday, as the system
will not automatically update the weekday.
A new time is entered as military time (12 midnight through 12 noon is entered as hours 00 through
12, respectively, and 12 noon through 11 PM is entered as hours 12 through 23). The time is
entered by using the numeric keypad to input a 2 digit hour (00 through 23), followed by a 2 digit
minute (00 through 59), and followed by a 2 digit second (00 through 59). Note that after each 2
digit entry, the ":" delimiter is automatically displayed for you. Also note that you must enter two
digits for each item. An example of entering the time 2:34:06 PM would be to enter 14 (for the hour),
followed by 34 (for the minute), followed by 06 (for the second), followed by the ENTER key. If
