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5.21 Key Functions
5.21.1 MONI
After the UPS has been successfully started, the system will be in the normal 'AC
Input Mode' of operation. The LCD screen will automatically display the main MONI
(monitor) function. If the MONI key is pressed at this time the screen output will not
change. The MONI function automatically monitors the entire UPS system. The LCD
screen will automatically switch "off" after a period of keypad inactivity and switch
"on" if any key is pressed. It will switch "on" automatically during battery discharge or
if an abnormality develops in the system (see "Settings for LCD Display Duration").
All system 'line' messages will be displayed from MONI mode when abnormal
operating problems are detected. If AC input power is available and the UPS is
operating normally, the following system message is displayed:
- UPS ON-LINE -
OUTPUT VOLTAGE= 208V
CURRENT=100/100/99%
DATE (DAY) TIME
If an AC input power failure occurs, and no abnormal operating conditions are
present, the UPS switched to standard 'Battery Backup Mode'. The following system
message is displayed:
- BATTERY BACKUP –
OUTPUT VOLTAGE = 208V
CURRENT=100/100/99%
DATE (DAY) TIME
5.21.2 IN
When the IN key is pressed during normal 'AC Input Mode' of operation, the LCD
screen displays details about the unit's input voltage. The following system message
is displayed:
- UPS ON-LINE -
INPUT Vab = 96%
VOLTAGE Vbc = 96%
Vca = 96%
The Bypass Input Voltages, Frequencies / Sync Mode, and Converter Current can be
monitored by pressing the "UP/DOWN" keys.
5.21.3 OUT
When the OUT key is pressed during normal ‘AC Input Mode’ of operation, the LCD
screen displays details about the output voltage, current, and frequency. The
following system message is displayed:
- UPS ON-LINE -
OUTPUT Ia = 101%
CURRENT Ib = 100%
Ic = 100%
The Output Line Voltages (phase-neutral, and phase to phase),
Frequencies / Sync Mode, Inverter Output Power, and Power factor can be monitored
by pressing the "up/down" keys.