Fig. 9: Fastening with screws
By wall mounting, the terminal unit is grounded through the screws. It is neces-
sary that
–
the screws have a conductive surface (e.g. steel zinc-plated or brass nickel-
plated)
–
the mounting plate is grounded
–
the screws have a good electrical contact to the mounting plate
The following procedure allows you to use the mounted modules as a template for drilling holes
in the panel. Due to module mounting hole tolerance, it is important to follow these procedures:
1.
On a clean work surface, mount no more than 3 modules (e.g. one terminal base and two
terminal units).
2.
Using the mounted modules as a template, carefully mark the center of all module-
mounting holes on the panel.
3.
Return the mounted modules to the clean work surface, including any previously mounted
modules.
4.
Drill and tap the mounting holes for the screws (M4 or #8 recommended).
5.
Place the modules back on the panel and check for proper hole alignment.
6.
Attach the modules to the panel using the mounting screws.
If mounting more modules, mount only the last one of this group and put
the others aside. This reduces remounting time during drilling and tapping
of the next group.
7.
Repeat the steps for all remaining modules.
5.7 Mounting and demounting the communication module
Communication modules are mounted on the left side of the processor module on the same
terminal base. The connection is established automatically when mounting the communication
module.
Practical tip
Mechanical planning and installation
Mounting and demounting the communication module
2023/03/03
3ADR011074, 1, en_US
39