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6.2.2
Paralleling of UPS-Cabinets
For the correct performance of different parallel functions and operations the parallel units communicate
continuously between each other. This is achieved by means of the so-called communication BUS-
Lines.
After terminating the input and output cabling of each single UPS, it is necessary to connect the units
together to form the parallel system. For this purpose a communication BUS line is connected
sequentially between the units. Connect communication BUS lines according to Figure 22.
NOTE
CONNECT THE BUS CABLES ONLY WITH SWITCHED OFF UPS AND
OPENED PARALLEL ISOLATORS IA2. RESPECT THE FOLLOWING
CONNECTION SEQUENCES.
1.
Fit the Parallel Adapter over the Connector JD8 on all UPS-cabinets
2.
Set DIP Switch SW2-2 on each Parallel Adapter depending on the UPS Cabinet in the parallel
cabinet configuration (see section 6 chapter 6.1.2.2.2)
3.
Connect PORT JD6 on Parallel Adapter of UPS-Cabinet 1and PORT JD5 of Parallel Adapter of
UPS-Cabinet 2 with the corresponding BUS-Cable;
4.
Connect PORT JD6 on Parallel Adapter of UPS-Cabinet 2 and PORT JD5 of UPS-Cabinet 3
with the corresponding BUS-Cable
5.
Continue in the same manner for the remaining UPS-Cabinets.
Figure 22: Connection of the Bus Lines when paralleling UPS-Cabinets by means of Parallel Adapters.
If the UPS-CABINETS are paralleled, the Parallel Adapter will be placed on the Connector JD8 on the
distribution panel and the communications cables between the cabinets will be connected through the
connectors JD5 and JD6, as we are doing now.
NOTE: set the Switch SW2-2 correctly according to the corresponding cabinet configuration.
Figure 23: Parallel Adapter and DIP Switch SW2-2
Single
Unit
First
Unit
Others
Unit
Last
Unit
SW 1
ON
OFF
OFF
ON
SW 2
ON
ON
OFF
OFF
Parallel
Adapter
JD 5
SW2-2
JD6
JD8
Summary of Contents for PowerWave 33 Series 3
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