1 control buttons, 1 on/alarm silence/manual self-diagnostic test, 2 off button – Liebert UPS Systems PSI XR User Manual

Page 19: 2 status indicators, 1 status change button, 2 load level indicator, Control buttons, On/alarm silence/manual self-diagnostic test, Off button, Status indicators

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Controls and Indicators

15

4.1

Control Buttons

4.1.1 On/Alarm Silence/Manual Self-Diagnostic Test

This button controls output power to connected load(s). It has three functions:

• On
• Alarm Silence
• Manual Self-Diagnostic Test

ON—Start the UPS by pressing this button for more than 3 seconds, then releasing the button (an

alarm will sound briefly). If the ON button is pressed and utility is outside input parameters, the UPS

will start on battery (dark start).
Alarm Silence—Silence a battery mode audible alarm by pressing this button for longer than one

second, then releasing it.
Manual Self-Diagnostic Test—To initiate a Manual Self-Diagnostic, press this button for at least

three (3) seconds while operating from utility power. UPS will switch to Battery Mode to detect bat-

tery voltage and whether the UPS is operating normally.

If LED indicates the battery is weak: Allow the UPS to recharge the batteries for 8 hours.

Retest the battery after recharge.

If LED still indicate battery weak after the battery has been retested, contact your local

dealer, Emerson representative or Liebert Applications.

If LED indicates a Battery Fault: Contact your local dealer, Emerson representative or Liebert

Applications.
If LED indicates UPS Fault: Remove the load, retest the self diagnostic test, if LED indicated

UPS Fault, Contact your local dealer, Emerson representative or Liebert Applications.

4.1.2 Off Button

When the UPS is operating in either Normal Mode or Battery Mode, pressing the Off button for more

than three seconds will shut down the UPS.

4.2

Status Indicators

4.2.1 Status Change Button

The Status Change Button determines the information displayed by the five LEDs on the front panel.

The default information shown by the LEDs is the load level on the UPS. Pressing the Status Change

Button while the UPS is On prompts the LED display to show battery capacity for 5 seconds. This

function assists in assessing the meaning of status indicators as described in 4.2.4 - UPS Status

Indicators. See Figure 16 and Table 2 for the Status Change Button’s location.

4.2.2 Load Level Indicator

The five LEDs at the top of the front panel illuminate with a steady glow to indicate the load level on

the output of the UPS. The LEDs show the load level as a range, ± 5%. The LEDs’ load level meanings

and colors are:

NOTE
Refer to Figure 16 and Table 2 for details about the LEDs’ meaning.

LED 1

LED 2

LED 3

LED 4

LED 5

10 - 24% — Green

25 - 49% — Green

50 - 74% — Yellow

75 - 99% — Yellow

100% or greater — Red

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