TOSHIBA

5.14

AC IN

GREEN

INV

GREEN

BYP

GREEN

BATT

GREEN

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 is no power failure and the input voltage is in an under-voltage condition, the AC IN lamp will 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").

This green LED lamp is "on" when the UPS inverter is operating.

This green LED lamp is "on" when the UPS is in the static Bypass Mode.

This green LED lamp is "on" when the UPS is in the Battery-Discharge Mode. If the battery is low during a battery discharge, the BATT lamp will flicker on and off slowly (1.2 sec "on" and

1.2sec "off"). The BATT lamp will go "off" if the battery voltage reaches the shutdown level during the Battery-Discharge Mode.

FAULT

RED

This red LED lamp is "on" when the UPS is in a fault condition.

5.14.1LED (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

ON/OFF STATUS

 

 

LED

 

ON/OFF STATUS

 

 

Normal UPS Operation

 

Output Shutdown

 

(UPS On-Line, no abnormal conditions)

 

(After EPO received (Emergency Power Off ))

 

AC IN

ON

 

AC IN

 

OFF

 

INV

ON

 

INV

 

OFF

 

BYP

OFF

 

BYP

 

OFF

 

BATT

OFF

 

BATT

 

OFF

 

FAULT

OFF

 

FAULT

 

OFF

 

Bypass Operation; UPS Fault

 

 

Fatal Communication Error

 

 

 

 

(Display to Control Interface)

 

 

 

 

 

 

 

 

AC IN

ON

 

AC IN

 

ALL ON OR FLICKERING

 

INV

OFF

 

 

 

BYP

ON

 

INV

 

RAPIDLY

 

BATT

OFF

 

BYP

 

 

 

 

FAULT

ON

 

BATT

 

 

 

 

 

 

 

 

FAULT

 

 

 

 

Battery Back-up; (Battery Voltage Low)

 

 

 

 

 

 

 

 

 

 

 

 

 

AC IN

OFF

 

 

 

 

 

 

INV

ON

 

 

 

 

 

 

BYP

OFF

 

 

 

 

 

 

BATT

ON (Blinking)

 

 

 

 

 

 

FAULT

OFF

 

 

 

 

 

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Toshiba 4200FA user manual LED Light Emitting Diode Functions, LED Light Emitting Diode System Status

4200FA specifications

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