Connecting Parallel Signal Cables - Liebert UHA1R-0100 User Manual

30 Chapter 3 Parallel UPS Installation And Commissioning
Input cable

3.4.2 Connecting Parallel Signal Cables

The parallel system provides parallel signal cables (option). The parallel signal cables form a ring connection through
the parallel ports on the rear panel of the UPS. The cable connection schematic diagram of the 3 + 1 parallel system
is shown in Figure 3-3. The parallel port of the UPS is DB15 male port (pin shape), and the parallel cable port is DB15
female port (hole shape).
UPS1
UPS2
UPS3
UPS4
The parallel signal cables provided by Emerson must be used for the parallel system.
User input power
distribution unit
Figure 3-2 Block diagram of four-UPS parallel system
Figure 3-3 Cable connection schematic diagram of 3 + 1 parallel system
Liebert ITA 10kVA UPS User Manual
®
User output power
distribution unit
UPS1
UPS2
UPS3
UPS4
警告 危 险
Note
Output cable