2. Mount the S20 bus base module as shown in fig. 10-9 "Interconnect the
S20 bus base modules and connect them to the control bus base module"
on page 22.
Mounting the control to the bus base module
1. Press the control on the premounted bus base module until all latchings
are safely closed.
Fig. 10-8: Snapping the control
Note the minimum distances for control cooling (see chapter 10.1
"Installation notes" on page 16).
10.4 Mounting S20 I/O modules
The S20 bus base modules can only be mounted if the control is not
attached to the control bus base module.
Mounting S20 bus base modules
1. Press the S20 bus base modules for the S20 modules on the top-hat rail on
the right next to the control bus base module until all latchings are safely
closed (see (A) in the following figure).
2. Move the first S20 bus base module (see (B)) to the left and connect the
S20 bus base module with the bus base module of the control (see (D) in
the following figure).
3. Move the other S20 bus base modules to the left until all bus base modules
are interconnected (see (C) in the following figure).
IndraControl XM21, XM22 Controls
21/69
Mounting, demounting and electric installation
R911340667_Edition 04 Bosch Rexroth AG
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