Normal and safe operation Liebert EXL S1
75
User Manual 10H52226UM60 - Rev. 1 - 01/2017
5.1.4. Communication
Th
e UPS offers several interfaces for communication with computers. Further information is included
in chap. 4. on page 67.
5.2. Special features
5.2.1. Safe and reliable operation
• Real on-line functioning, i.e. complete de-coupling of the load from all abnormalities in line power
• Important features of the UPS, such as vector control and high flexibility, are supported by the
DSP board).
• Static Bypass Switch increases the reliability of electrical supply
5.2.2. Easy installation and operation
• Parameterisation using bundled PC software
• No Operator presence required during normal operation
• Simple touch screen provides clear indication of status, load and battery quality. The concept
behind the display and the way it operates is easy to understand.
• Event memory for fault analysis
• Fault display and audible signal
5.2.3. Battery management
• Automatic battery management ensures maximum battery life
• Automatic battery circuit test
• Temperature-dependent charging
5.2.4. Environment, EMC
• EMC limits values to comply with European regulations and standards
• Energy savings due to high efficiency
• Low noise level
• Special EMC filter for higher demands (optional)
5.2.5. Modern technology
• Interfaces with software for all operating systems
• IGBT power transistors
• Highly integrated digital electronics (ASICs)
• Especially well suited for computer loads
The UPS can also be used as a frequency converter for 50/60Hz or vice versa.
5.3.
Block diagram
(see Fig. 43).
KEY TO SWITCHES:
• QS1 = PRIMARY MAINS INPUT SWITCH
• QS2 = BYPASS MAINS SWITCH
• QS3 = MAINTENANCE BYPASS SWITCH (not available for 600/800/1000/1200kVA)
• QS4 = OUTPUT SWITCH
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