Multi Cabinet Configuration - ABB DPA UPScale ST40 User Manual

7.5 Multi cabinet configuration

For the correct performance of different parallel functions and operations, the parallel units
communicate continuously between each other. This is achieved using 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 7.5-1.
CONNECT THE BUS CABLES ONLY WITH the UPS SWITCHED OFF AND
OPENED PARALLEL ISOLATORS IA2. 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.
3. Connect port JD6 on the parallel adapter of UPS cabinet 1 and port JD5 of the parallel adapter
of UPS Cabinet 2 with the corresponding bus cable.
4. Connect port JD6 on the 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 7.5-1: 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.
SET THE SWITCH SW2-2 CORRECTLY ACCORDING TO THE
CORRESPONDING CABINET CONFIGURATION.
NOTE
Parallel
Adapter
JD 5
SW2-2
JD6
Modifications reserved
Page 65/79
JD8
SW 1
SW 2
Figure 7.5-2: Parallel Adapter and DIP Switch SW2-2
Single First Others
Unit Unit
OFF OFF OFF
OFF OFF
Unit
ON