X20 system
3.3.3 Installation with increased vibration requirements (4 g)
The following additional measures are necessary to fulfill increased vibration requirements regardless of whether
X20 modules are installed horizontally or vertically:
1. Apply foam tape along the entire length of the module configuration under the top edge.
2. Use special end clamps to the left and right to provide additional fixation (supplement foam tape as shown
in the image).
3. For CPUs with exchangeable battery, foam tape must be applied to the inner side of the battery cover to
help hold the battery in place.
4. If slots are free, use dummy housings to ensure that the controller is held effectively in place.
5. Proper strain relief on all wires
Figure 6: X20 system - Installation with increased vibration requirements (4 g) and end clamp
Notice!
The attachable end cover plates for some X20 modules should be removed for "installation with in-
creased vibration requirements (4 g)"!
Figure 7: X20 system - Removing the end cover plates
Installation / EMC guide 1.36 (April 2021) 13
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