Rockwell Automation 1769-L24ER-QB1B_QBFC1B_QBFC1B CompactLogix 5370 L2 Controllers Installation Instructions - Manual (Page 7)

CompactLogix 5370 L2 Controllers 7
Rockwell Automation Publication 1769-IN090A-EN-P - April 2012
Mount the Controller on a Panel
Use two M4 or #8 panhead screws to mount the controller. Mounting screws are
required on every module. Use this procedure to use the assembled modules as a
template for drilling holes in the panel.
1. On a clean work surface, assemble no more than three modules.
2. Using the assembled modules as a template, carefully mark the center of
all module-mounting holes on the panel.
3. Return the assembled modules to the clean work surface, including any
previously mounted modules.
4. Drill and tap the mounting holes for the recommended M4 or #8 screw.
5. Place the modules back on the panel and check for proper hole
alignment.
6. Use the mounting screws to attach the modules to the panel.
7. Repeat steps 1…6 for any remaining modules.
IMPORTANT Due to module mounting hole tolerance, it is important to follow these procedures.
TIP
The grounding plate, that is, where you install the mounting screws, grounds
the module when it is panel-mounted.
TIP If you are mounting more modules, mount only the last one of this group and
put the others aside. This reduces remounting time when you are drilling and
tapping the next group of modules.