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Work on the Plug
Connectors
7SA522 Manual
C53000-G1176-C155-3
Caution!
Mind electrostatic discharges:
Non–observance can result in minor personal injury or property damage.
When handling with plug connectors, electrostatic discharges may emerge by previ-
ously touching an earthed metal surface must be avoided.
Do not plug or unplug interface connectors under voltage!
The arrangement of the boards for housing size
1
housing size
/
in Figure 3-4.
1
• Disconnect the plug connector of the ribbon cable between the front cover and the
processor board C-CPU-1 (No. 1 in Figure 3-3 and 3-4) at the front cover side.
Press the top latch of the plug connector up and the bottom latch down so that the
plug connector of the ribbon cable is pressed out.
• Disconnect the ribbon cables between the processor board C-CPU-1 (No. 1 in
Figure 3-3 and 3-4) and the input/output board I/O (according to order variant No.
2 to No. 4 in Figure 3-3 and 3-4).
• Remove the boards and put them on the earthed mat to protect them from ESD
damage. In the case of the device variant for panel surface mounting please be
aware of the fact a certain amount of force is required in order to remove the
C-CPU-1 board due to the existing plug connector.
• Check the jumpers according to Figures 3-5 to 3-7, 3-9 to 3-11 and the following
information. Change or remove the jumpers if necessary.
Figure 3-3
Front view with housing size
scaled down)
3.1 Mounting and Connections
1
/
is shown in Figure 3-3 and for
2
1
/
after removal of the front cover (simplified and
2
379
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