Setting Up The Double Bus System Parameters - Emerson Liebert NXC User Manual

Parallel UPS Installation And Commissioning
DB9 male port
DB9 male port
DB9 female port
DB9 female port

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.
42
UPS 1
UPS 1
DB9 male port DB9 female port
DB9 male port DB9 female port
UPS 2
UPS 2
LBS cable
LBS cable
UPS 3
UPS 3
UPS 4
UPS 4
Figure 4-7 LBS cable connection
Unit 1#
Protocol
YDN23
3 Phase Output or 1 Phase Output
Three
ESC
Figure 4-8 Setting interface
oN oN oA oB oC mN
PE PE
oN oN oA oB oC mN
PE PE
oN oN oA oB oC PE PE mN
oN oN oA oB oC PE PE mN
ITA 016kVA
NXC 20kVA
14:30:36
YDN23
Velocity
Three
Single
Settings
User Manual 10H52188UM60 - Rev. 2 - 09/2012
bN mA bA mB bB mC bC
bN mA bA mB bB mC bC
bN mA bA mB bB mC bC
bN mA bA mB bB mC bC
Liebert NXC