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Liebert® EXM™ UPS 20-100kVA, 50/60Hz User Manual
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13
2.7
Liebert
®
Power Module Assembly
Figure 4
Liebert
®
Power Module Assembly indicators and controls
The BATTERY START button allows starting the UPS on battery.
The Run LED is illuminated Green when the Liebert
®
Power Module Assembly is operating normally.
The Fault LED will illuminate red when the Liebert
®
Power Module Assembly has a problem.
Table 2
LED indications on power module assembly
LED Status
Indication
Run LED (Green)
Flashing Green
The inverter is starting, but has no output yet.
Constant Green
The inverter has started to supply power.
OFF
The inverter has not started up.
Fault LED (Red)
Constant Red
Auxiliary power failure (15V or 24V), rectifier overtemperature, rectifier failure (including battery SCR short circuit), battery
converter failure, soft start failure, main circuit back feed, abnormal input current, inverter failure, output short circuit,
bypass SCR short circuit fault, inverter relay short circuit fault, abnormal bus voltage, module not ready, module ID out of
range and duplicated module ID.
Flashing Red
Charger failure, abnormal main circuit voltage, abnormal main circuit frequency, main circuit undervoltage, main circuit
reverse phase, battery unavailable, reverse battery, input zero-loss, current sharing failure, module overload, inverter relay
disconnection fault, bypass SCR disconnection fault and input fuse blown.
OFF
No above failures or alarms.
Ready Switch
DIP Switches
Run LED
Fault LED
Battery Start Button
Summary of Contents for Liebert EXM
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