41
EN
Function over-
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Plug layout
Pin Function
X1 Connection to cooling unit
Fig.7 Plug and connections on ASU 27 PC board
(X6)
(X5)
(X4)
(X1)
(X3)
(X2)
Pin 1 NC
Pin 2 230/400 V from
primary rectifier
Pin 3 NC
Pin 4 Cooler 400 V
Pin 5 NC
Pin 6 Cooler 230 V
Pin 7 NC
Pin 8 NC
Pin 9 NC
Pin 10 NC
Pin 11 NC
Pin 12 NC
Pin 13 NC
Pin 14 NC
Pin 15 NC
Pin 16 NC
- For switching between 230 V AC and 400 V AC
- For generating control voltage +12 V and +5 V from the input voltage
- When switching on, the switching mechanism on the PC board detects the input
voltage:
a) With an input voltage of 400 V AC, the ASU 27 PC board switches both power
modules on BPS 25/BPT 27 in series
b) With an input voltage of 230 V AC, the ASU 27 PC board switches both power
modules on BPS 25/BPT 27 in parallel.
X2 not connected
X3 Connection to BPS 25/BPT 27 PC board (intermediate circuit 1+)
X4 Connection to BPS 25/BPT 27 PC board (intermediate circuit 1-)
X5 Connection to BPS 25/BPT 27 PC board (intermediate circuit 2+)
X6 Connection to BPS 25/BPT 27 PC board (intermediate circuit 2-)
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