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IMPORTANT:
1.
The BYPASS MODE (ECO-MODE) function of a parallel systems is the same as in single units of Conceptpower DPA 500. If in
a parallel UPS system the load is transferred to the BYPASS (load on mains) and if the mains fail, all UPS's will be automatically
transferred to inverter within 5msec.
2.
The ECO-MODE function is currently NOT available on the UL DPA 500. Please consult the factory for more information.
7.2.1
Installation Instructions
THE OPERATIONS DESCRIBED IN THIS CHAPTER MUST BE PERFORMED BY A SERVICE
ENGINEER FROM THE MANUFACTURER OR BY AN AGENT CERTIFIED BY THE
MANUFACTURER.
WARNING
NOTE:
In order to achieve equal load sharing between the UPS-cabinets, the input cable lengths from the input distribution board to the UPS
and from the output cable to the output distribution board must be the same length. When cabling each UPS, connect input and output
wires to the corresponding terminals, respecting the same phase sequence on all UPS Cabinets.
7.2.2
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 JD8 Parallel BUS communication 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
by connecting the JD8 Parallel BUS lines sequentially between the units. Connect Parallel BUS lines according to Figure 14.
CONNECT THE BUS CABLES ONLY WITH SWITCHED OFF UPS AND OPENED PARALLEL
ISOLATORS CB1. RESPECT THE FOLLOWING CONNECTION SEQUENCES.
NOTE!
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 Figure
15)
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.
UPS-Cabinet 1
Parallel Adapter
SW2-2
Master-Slave
Master-Slave
Output
Input
JD6
JD5
Figure 14: 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.
NOTE: set the Switch SW2-2 correctly according to the corresponding cabinet configuration.
UPS-Cabinet 2
Parallel Adapter
SW2-2
Master-Slave
Master-Slave
Output
Input
JD6
JD5
UPS-Cabinet n-1
Parallel Adapter
SW2-2
Master-Slave
Master-Slave
Output
Input
JD6
JD5
Conceptpower DPA 500 480V UL │94-12-043275 A02 29
UPS-Cabinet n
Parallel Adapter
SW2-2
Master-Slave
Master-Slave
Output
Input
JD6
JD5
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