Manual Power Quality Filter PQFM
Electrical design and installation 71
6.11.2 Control board cable interconnection
WARNING: Failure to interconnect the control boards in an appropriate way will result
in filter malfunctioning and possibly sever damage of the unit.
Interconnect the control boards of a following unit with a previous filter unit by an RJ45-
based communication cable (straight interconnection). This cable is provided with each
unit.
: shows the way to interconnect the control boards.
Control board in the ‘previous’ unit
Control board in the ‘next’ unit
From previous unit (if present)
To next unit
(if present)
Figure 55: Control board interconnection cable connection method.
−
The RJ45 control cable coming from the preceding filter unit is plugged in the left
hand side RJ45-socket at the top of the filter control board.
−
The RJ45 control cable leaving for the next filter unit is plugged in the right hand
side RJ45-socket at the top of the filter control board.
−
Repeat the same procedure for any other filters to be connected.
Notes:
−
In the first unit of a filter system, the left hand RJ45-socket will always be empty.
−
In the last unit of a filter system, the right hand RJ45-socket will always be empty.
−
During the commissioning phase, a unique address has to be assigned to each
unit in a filter system through dip switch (see
Chapter 8
).
6.11.3 Earth points interconnection
Interconnect the earth points of the different units (Cf.
item 3) and earth the
new unit individually. Refer to
Section 6.5
for more information on this topic.
