ABB PQFA, Instruction Manual

Page: 46 / 98

PQFA Instructions Manual
Asea Brown Boveri Jumet S.A.
46
Start the DC buses interconnection with the last slave and proceed similarly
with each cubicle until reaching the Master.
An example of DC bus interconnection is given below (PQFA-B+D+C) in
Figure 7.2.
Figure 7.2. DC bus interconnection
7
7
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3
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1
1
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2
2
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C
C
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o
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t
r
r
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l
l
c
c
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e
e
c
c
t
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Each slave cubicle comes from the factory with a bunch of 7 cables
connected to terminal X13.
Those cables fed a common Wago connector that has to be connected to
terminal X13 of the next cubicle, starting connection with the bunch of the last
slave (Picture 7.2)
Be very careful about the polarity
when connecting the DC bus.
Module 2
Module 1
Module 4
Module 3 Module 5
Control
+
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+
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+
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Internal
connection
External
connection to
perform