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Figure 3.7 Removing the Bus Connector Panel
To attach an expansion module to the base module or to
another expansion module, follow these steps (See Figure
3.8 and Figure 3.9):
1.
Plug the expansion module's bus connector into the
bus connector slot on the left side of the expansion
module. Be sure the four projections on the bus con-
nector face the back side of the module. These projec-
tions will snap on the module case.
2.
Plug the expansion module into the right bus connector
of the receiving module. Be careful not to install expan-
sion modules upside down. All expansion modules can
be installed in the field. Be sure the installation guide-
lines above are followed for each module to be
installed.
Expansion Module
Bus Connector
Clips
Base Module
Figure 3.8 Attachment of Expansion Module
Siemens Energy & Automation, Inc.
Expansion Module
3
Installing Modules
Expansion Module
Circuit Board
Base Module
Figure 3.9 Proper Expansion Module Placement (Cutaway
View)
3.4
Removing Expansion Modules
To remove an expansion module for repair or replacement,
follow these steps:
1.
Remove power from all units.
2.
Disconnect all wiring from the module to be removed.
3.
Snap open the DIN rail clip, or remove the attachment
screws.
4.
Slide the device that is to be removed approximately 1
inch to the right to disconnect the bus connector.
Bus Connector
Expansion Module
9
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