2.4 Operation Modes
The UPS has the following operation modes:
• Normal mode
• Battery mode
• Automatic restart mode
• Bypass mode
• Maintenance mode
• ECO mode
• Parallel redundancy mode (system expansion)
• Frequency converter mode
• LBS mode
• Dynamic online mode
N orm al m od e
As shown in Figure 2.3 below, the UPS inverter continuously supplies the critical AC load. The rectifier draws power from the
commercial AC source and converts it into DC power for the inverter and the battery charger. The battery charger maintains
the battery in a fully charged and optimum operational condition. The inverter converts the DC power into clean and
regulated AC power which is supplied to the critical load (conditioned line).
Figure 2.3 Schem atic diagram of norm al m ode
N O. Description
1 Mains input
2 Rectifier
3 Inverter
4 Inverter switch
5 Output switch
2 Overview
14
Vertiv™ Liebert® EXM2 UPS User Manual
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