Emerson Liebert NXC - Setting up the Double Bus System Parameters

42 User Manual 10H52188UM60 - Rev. 2 - 09/2012
Parallel UPS Installation And Commissioning Liebert NXC
UPS 1
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PE PE
UPS 2
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PE PE
UPS 3
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PE PE
UPS 4
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PE PE
DB9 male port
DB9 female port
LBS cable
DB9 male port
DB9 female port
Figure 4-7 LBS cable connection
4.5.5 Setting up the Double Bus System parameters
Using the double bus system formed by 1 + 1 parallel system as an example, set ‘System Configuration’ to ‘Parallel’, ‘Parallel
requisite units’ to ‘1’, ‘Parallel Redundant Units’ to ‘1’. For the master system, set ‘LBS Function’ to ‘MASTER’. For the slave
system, set ‘LBS Function’ to ‘SLAVE’. Ensure that the setting for ‘3 Phase Output or 1 Phase Output’ of each single UPS in the
double bus system is same, as shown in Figure 4-8.
ITA 016kVA
Settings
Unit 1#
YDN23 Velocity
3 Phase Output or 1 Phase Output Three
ESC
YDN23
Protocol
Three Single
14:30:36
Figure 4-8 Setting interface
DB9 male port
DB9 female port
UPS 1
UPS 2
UPS 3
UPS 4
LBS cable
DB9 male
p
ort
DB9 female
p
ort
NXC
20kVA