TOSHIBA
6.14 Key Functions
6.14.1 MONI
Upon completion of a successful UPS startup, the system will be in the AC Input mode of
operation. The LCD display will show the main MONI (monitor) function. If the MONI key is
pressed at this time the display output will not change. The MONI function monitors the entire
UPS system. The LCD display will switch off after a period of keypad inactivity and switch on if
any key is pressed. It will switch on if the battery discharge reaches a critical level or if an
abnormality develops in the system (see Section 6.15.3 — Settings for LCD Display Duration).
All system line messages will be displayed from the MONI mode when system problems are
detected. If the AC input power is available and no abnormal operating conditions are present
the following system message is displayed:
- UPS ON-LINE -
OUTPUT VOLTAGE= 208V
CURRENT=100/100/100%
DATE (DAY) TIME
Note: Actual numerical values may differ
from these examples. If output current
drops below 15%, display reads:
OUTPUT CURRENT=LOW.
If an AC input power failure occurs and no abnormal operating conditions are present, the UPS
switches to standard Battery Backup mode. The following system message is displayed:
- BATTERY BACKUP -
OUTPUT VOLTAGE= 208V
CURRENT=100/100/100%
DATE (DAY) TIME
6.14.2 IN
Pressing the IN key during normal AC Input mode of operation displays input voltage
information. The following system message is displayed:
- UPS ON-LINE -
INPUT Vab= 100%
VOLTAGE Vbc= 100%
Vca= 100%
The bypass input voltage, frequency / Sync Mode, and converter current may be monitored by
pressing the DOWN/UP keys.
6.14.3 OUT
Pressing the OUT key during normal AC Input mode of operation displays output voltage,
current, and frequency information. The following system message is displayed:
- UPS ON-LINE -
OUTPUT Ia =100%
CURRENT Ib= 100%
Ic= 100%
Note: If output current drops below
15% display reads: CURR=LOW.
The Output Line Voltages (phase-neutral, and phase to phase),
Frequencies / Sync Mode, Inverter Output Power, and Power Factor may be monitored by
pressing the DOWN/UP keys.
42 4200FA User’s Manual
