14.9Emergency Power Off (EPO)

Press the EPO switch for immediate shutdown of all power through the UPS. The signal from the EPO is processed as a “hard fault” by the UPS and results in gate-blocks on the transistors and opens all the internal contactors.

To Reset the UPS after triggering the EPO, do the following:

1.Shut Down the UPS as described in section 14.6.

2.Restart the UPS as described in section 14.3.

15 Troubleshooting

When an error occurs in the UPS, error data is displayed on the LCD screen. This section will describe the types of errors, the error messages displayed on the LCD screen and the procedures to correct the errors.

15.1Types of Errors

The following types of errors may occur in the UPS:

TABLE 15.1 OPERATION TYPES

Name

 

Description

Fault

Fault (Trip)

The UPS has been tripped and has stopped operating.

 

The UPS is in Bypass mode.

 

 

 

Warning-1 (Input Power Failure)

Power is supplied from the battery. When the warning is

 

 

corrected, power will automatically be supplied from the

 

 

AC input.

 

Warning-2 (Stop and Restart)

The UPS transfers to Bypass supply and the UPS stops

 

 

operating. When the warning is corrected, the UPS will

Warning

 

automatically be restarted and revert to UPS supply.

 

Warning (Operation Control)

An error or a phenomena related to an error occurred.

 

 

Since this problem does not directly affect operation, the

 

 

system switches to synchronized mode.

 

(Guidance)

An error or indication of an error has occurred, but

 

 

operation was not affected.

70

G8000 Series Installation and Operation Manual

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Toshiba 100, 500 KW, 480 V, 225, 150, 300, 125 operation manual Troubleshooting, Emergency Power Off EPO, Types of Errors

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