5-5
5 Installation
CJ2 CPU Unit Hardware User’s Manual
5-2 Installation
5
5-2-1 Installation and Wiring Precautions
z PLC Orientation
• Each Rack must be mounted in an upright position to provide proper cooling.
• Do not install a Rack in any of the following positions.
Precautions for Safe Use
Always use the standard installation method. A nonstandard installation will decrease heat dissi-
pation, and may delay the replacement notification signal (in particular for Power Supply Units
with Replacement Notification (CJ1W-PA205C)), or degrade or damage the internal elements.
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