3.1 Mounting and Connections
273
7SD610 Manual
C53000-G1176-C145-4
Figure 3-3 Front view after removal of the front cover (simplified and with minimized zoom)
3.1.2.3 Switching Elements on Printed Circuit Boards
C-CPU-2 processor
board
The layout of the printed circuit board for the processor board C-CPU-2 is illustrated
in the following figure. The set nominal voltage of the integrated supply is checked ac-
cording to Table 3-2, the quiescent state of the life contact according to Table 3-3 and
the selected control voltages of the binary inputs BI1 to BI5 according to Table 3-4 and
the integrated interface RS232 / RS485 according to Table 3-5 to 3-7. The location and
ratings of the miniature fuse (F1) and the buffer battery (G1) are shown in the following
figure.
Before checking the integrated RS232/RS485 interface it may be necessary to
remove the interface modules placed above.
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