Emerson Liebert ITA, Руководство пользователя

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30 Chapter 3 Parallel UPS Installation And Commissioning
Liebert
®
ITA 16kVA And 20kVA UPS User Manual
UPS 1
bC mC bB mB bA mA bN mN oN oN oA oB oC PE PE
UPS 2
bC mC bB mB bA mA bN mN oN oN oA oB oC
PE PE
UPS 3
bC mC bB mB bA mA bN mN oN oN oA oB oC PE PE
UPS 4
bC mC bB mB bA mA bN mN oN oN oA oB oC
PE PE
DB9 male port
DB9 female port
Figure 3-3 Cable connection schematic diagram of 3 + 1 parallel system
Note
1. The Emerson parallel cables must be used for the parallel system.
2. The parallel communication fault occurs during the parallel commissioning, check whether the connection of the parallel cables
is correct, and whenther the pin1~ pin9 of the parallel cables are connected.
The parallel addresses for all UPSs in parallel system should be set. The parallel addresses can be set through the
DIP switch on the front panel of the UPS (see Figure 1-2). Remove the cover of the DIP switch, and set the DIP
switch according to Table 3-2.
Table 3-2 DIP switch settings
Parallel
addresses
Parallel 1# Parallel 2# Parallel 3# Parallel 4#
DIP switch
position
ON
1 2 3 4 5 OFF
ON
1 2 3 4 5 OFF
ON
1 2 3 4 5 OFF
ON
1 2 3 4 5 OFF