Voltage Programming Procedure; Figure 18 Load Level Indicators - Liebert PowerSure PSI User Manual

9.0 V P
OLTAGE ROGRAMMING

Figure 18 Load Level Indicators

Voltage
Programming
Button
1. Remove the front bezel from the UPS.
2. UPS must be operating in Normal (AC) mode.
NOTE
Utility power will be applied to the connected load.
3. The AC Input, Load, and Battery Level Indicators should be lit.
4. Press the Voltage Programming button for at least 5 seconds to enter the Configuration mode.
The UPS will beep and all of the indicators on the front panel display will flash on and off for
about 5 seconds. The next cycle will display the current configuration, either 110, 120 or 127 VAC.
One of the Load Level Indicators will be flashing. Initially, the 0%-25% Load Level Indicator will
be flashing, indicating the default setting of 120V as shown in Figure 18.
5. Press the ON button to step through the voltage settings until the appropriate Load Level
Indicator is flashing.
6. Press the Voltage Programming button. The UPS will return to Normal mode operation.
The Voltage Programming button allows the operator to select the utility transfer voltage at which
the UPS will switch to battery power. This also changes the inverter voltages. The voltage settings
are as follows:
Setting
120V (230V)
110V (220V)
127V (240V)
P
ROCEDURE
Input Voltage Output Voltage
Range (Battery Mode)
85 - 145 VAC
120VAC
(default)
78 - 138 VAC 110VAC
90 - 150 VAC 127VAC
21

Voltage Programming Procedure

Load Level
Indicators