ABB PQFS Installation, Operation And Maintenance Instructions page 144

Table 53: Possible filter unit addresses and corresponding DIP switch settings (facing the board
Filter address
1
2
3
4
5
6
7
8
Notes:
−
Do not use other settings than the ones mentioned in the table.
−
It is recommended to assign increasing addresses starting from the main master
at the left and moving right.
−
Assigning the same address to different filter units in one filter system will lead
to the filter not being able to start up and go in error (Bad Ratings).
When a filter consists of more than one unit, attention has to be paid to the proper
termination of the communication bus between the different units. This communication
bus is depicted in
In order to terminate the bus correctly, the fourth switch (counting from left to right)
from DIP switch 22 (Cf.
−
High: For the first unit in a filter system (single unit filter or first physical unit of
a multi-unit filter).
−
High: For the last physical unit of a multi-unit filter.
−
Low: For all the other units.
144 Commissioning instructions  Manual Power Quality Filter PQFS
with ABB logo at the top left side), counting left to right.
DIP switch 1
setting (ID0)
Low
High
Low
High
Low
High
Low
High
Figure 72 by the black lines interconnecting the different units.
Figure 72: Communication bus between different filter units
Figure 71) has to be set as follows:
DIP switch 2 DIP switch 3 setting (ID2)
setting (ID1)
Low Low
Low Low
High Low
High Low
Low High
Low High
High High
High High