Normal Mode Start-Up; Battery Mode Start-Up - Liebert NXC User Manual

Single UPS Installation and Commissioning
Set "Output Voltage Level" and "LBS Function" according to the user requirement, set "Command password" to "12345", the
default value of "Protocol" is "Velocity", select "Three" or "Single" in "3 Phase Output or 1 Phase Output", as shown in Figure
2-14.
Single
Output Voltage Level
200 208 220
LBS Function
NONE
Command password
*****
ESC

2.5.3 Normal Mode Start-Up

1. Close the UPS output MCB (QS4), the input MCB (QS1) and the bypass MCB (QS2) on by one. The maintenance bypass MCB
(QS3) must be opened.
After closing the above mentioned MCBs, the UPS output terminal block of the load will be live, pay attention to the personnal safety
to avoid electric shock. Note whether it is safe to feed power to load.
2. LCD displays the self-test screen; the fault indicator (red) and inverter indicator (green) are on at the same time for about 5
seconds. After the self-test, UPS enters the bypass state, the fault indicator turns on and the buzzer beeps for 1 second.
3. The rectifier runs in normal state about 30 seconds, the rectifier start-up is finished.
4. Finish and check the parameter settings of the single UPS.
5. Press the ON button for 2 seconds, the inverter indicator (green) are blinking, the inverter starts, and the inverter indicator
turns on.
6. Measure whether the inverter output voltage is normal.
7. If the battery is not connected, the fault indicator is blinking. If the battery is connected (internal battery with MCB QS6 and
QS7), the fault indicator turns off.

2.5.4 Battery Mode Start-Up

1. Close the battery LBS; press the battery cold start button on the UPS front panel for 2 seconds, the LCD displays the start
screen. The fault indicator (red) will blink and the buzzer will beep continuously after the rectifier finish the start.
2. Press the ON button for 2 seconds, the inverter starts, and the inverter indicator (green) turns on.
26
NXC 20kVA
ITA 016kVA
14:30:36
380V
230 380 400 415 480
MASTER
SLAVE MASTER
Settings
Figure 2-14 Settings interface 3
Single ITA 016kVA NXC 20kVA
Protocol
YDN23
3 Phase Output or 1 Phase Output
Three
Settings
ESC
Warning
User Manual 10H52188UM51 - Rev. 1 - 09/2011
Liebert NXC
14:30:36
YDN23
Velocity
Three
Single