Omron OMNUC FND Series User Manual page 102

Design and Installation
When assembling the control panel, remove the coating from all joints (or mask the joints when coat-
ing) to ensure electrical conductivity.
Be sure that no gaps are created when installing the control panel, as gaps can be caused by distortion
when tightening screws.
Be sure there are not any electrically conductive parts that are not in electrical contact.
Ground all Units mounted in the control panel to the panel case.
Never open holes in the control panel that are any larger than necessary. Open smaller individual
holes (e.g., for individual cables, cooling fans, etc.). Large holes will allow allow electric waves to leak
from or enter the control panel.
Be sure that the panels to check the Position Driver and other Units are mounted are electrically con-
ductive with the control panel.
Mounting panel
Door Structure
Use a metal door.
Connect the door and the control panel with short wires at several locations to ensure electrical con-
ductivity.
Be sure that no gaps are created when installing the cover, as gaps can be caused by distortion when
tightening screws.
Door
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Control panel case
Do not coat or
plate.
Weld screws or other conductive objects to
the door and case and connect with ground
wires to ensure electrical conductivity.
Control panel case
Top
Side
Chapter 2
Do not coat
or plate.