Configuration Program - Orion Power Systems SCR2 User Manual

Configuration Program

8.0 C P
ONFIGURATION ROGRAM
The final step of installation may require custom configuration of your UPS using the enclosed configuration program.
Some configuration settings may be changed only while the UPS is off. These should be set before the UPS is put into full time
service powering the critical load.
For most users operating with 127 VAC L-N,the factory default settings will be adequate. This manual illustrates the features
available For modification, as well as the factory default setting.
The factory default L-N setting is 127VAC. When first powered by the AC input, the UPS will auto sense the utility phase
angle between L1 and L2,setting the UPS to operate as either a 127/220VAC system (120 degrees, leading or lagging)
If your application requires that the L1-N,L2-N voltages be set at 100, 110,115 or 120 VAC, the corresponding phase angle
between L1 and L2 is restricted. TheVAC settings of 100, 110 and 115 may work only with a phase angle of 180 degrees.
A VAC setting of 120 VAC will work only with a phase angle of 120 degrees (leading or lagging).
To confirm the phase angle of the utility input, measure the L1-N,L2-N and L1 L2 VAC of the utility input that is intended for
the UPS. If the measured L1-L2 voltage is equal to the average L-N voltage times 2.0, then the phase angle is 180 degrees and
the L-N VAC maybe set at 100, 110, 115 or 120 VAC. The nominal L1-L2 voltages for these four settings will be 200, 220, 230
or 240 VAC, respectively.
If the measured L1-L2 voltage is equal to the average L-N voltage times 1.73, then the phase angle is 120 degrees and the L-N
VAC maybe set at either 120 or 127 VAC. The nominal L1-L2 voltages for these two settings will be 208 or 220 VAC,
respectively. Selecting a L-N nominal voltage that is not compatible with the L1-L2 phase angle detected by the UPS when AC
input is applied will result in a fault alarm and the UPS will not operate from utility power.
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