Led (Light Emitting Diode) Functions; Led (Light Emitting Diode) System Status - Toshiba 4200FA User Manual

5.14

LED (Light Emitting Diode) Functions

The following list describes the conditions necessary for each LED lamp to be "on."
This green LED lamp is "on" when the UPS is operating normally within specifications. If there
AC IN
is no power failure and the input voltage is in an under-voltage condition, the AC IN lamp will
GREEN
be "off." If there is no power failure and the input voltage is in an over-voltage condition, the
AC IN lamp will flicker on and off rapidly (0.4 sec "on" and 0.4 sec "off").
INV
This green LED lamp is "on" when the UPS inverter is operating.
GREEN
BYP
This green LED lamp is "on" when the UPS is in the static Bypass Mode.
GREEN
This green LED lamp is "on" when the UPS is in the Battery-Discharge Mode. If the battery is
BATT
low during a battery discharge, the BATT lamp will flicker on and off slowly (1.2 sec "on" and
GREEN
1.2 sec "off"). The BATT lamp will go "off" if the battery voltage reaches the shutdown level
during the Battery-Discharge Mode.
FAULT
This red LED lamp is "on" when the UPS is in a fault condition.
RED

5.14.1 LED (Light Emitting Diode) System Status

The following chart shows the UPS system status that can be determined by
decoding the "on" and "off" condition of the LED lamps. It should be used in
conjunction with the LCD display and the audible alarms for total system monitoring.
LED
Normal UPS Operation
(UPS On-Line, no abnormal conditions)
AC IN
BYP
BATT
FAULT
Bypass Operation; UPS Fault
AC IN
BYP
BATT
FAULT
Battery Back-up; (Battery Voltage Low)
AC IN
BYP
BATT
FAULT
TOSHIBA
ON/OFF STATUS
ON
INV ON
OFF
OFF
OFF
ON
INV OFF
ON
OFF
ON
OFF
INV ON
OFF
ON (Blinking)
OFF
LED
Output Shutdown
(After EPO received (Emergency Power Off ))
AC IN
BATT
FAULT
Fatal Communication Error
(Display to Control Interface)
AC IN
BATT
FAULT
42
ON/OFF STATUS
OFF
INV OFF
BYP OFF
OFF
OFF
ALL ON OR FLICKERING
INV RAPIDLY
BYP