Installing Racks - Omron C200HE-CPU11 Installation Manual

Installation Environment
Cooling Fan
Noise Resistance

3-1-2 Installing Racks

A cooling fan is not always necessary, but may be needed in some installations.
Try to avoid mounting the PC in a warm area or over a source of heat. A cooling
fan is needed if the ambient temperature may become higher than that speci-
fied. If the PC is mounted in an enclosure, install a cooling fan, as shown in the
following diagram, to maintain the ambient temperature within specifications.
PC
Louver
Abide by the following precautions to help increase resistance to noise.
• Do not mount the PC in a control panel containing high-voltage equipment.
• Install the PC at least 200 mm from power lines.
• Ground the mounting plate between the PC and the mounting surface.
The following figures show two views, each consisting of a mounted CPU Rack
and two Expansion I/O Racks. Provide a space of 20 mm minimum on the upper
and lower sides of each duct for ventilation and Unit replacement.
Example Duct Layout
30 mm
40 mm
Each Rack must be mounted vertically, that is, with the printing on the front pan-
els oriented as it would normally read. Racks may be mounted to any sturdy sup-
port meeting the environmental specifications.
Whenever possible, the Racks should be mounted to metal-plated mounting
plate that are securely grounded. If all of the Racks cannot be mounted to the
same mounting plate, the individual plates should be securely connected
together using 3 wires of at least 2 mm
are mounted to the plate(s) with four M4 screws each.
Whenever possible, use wiring conduit to hold the I/O wiring. Standard wiring
conduit should be used, and it should be long enough to completely contain the
I/O wiring and keep it separated from other cables.
Fan
2
in cross-sectional area. The Backplanes
Section 3-1
118 to 153 mm
CPU
30 mm Duct
I/O
30 mm Duct
I/O
51