System Design and Layout
GFK-0356Q Chapter 12 System Design 12-21
12
PLC Mounting Position
Power supply load rating depends on the mounting position of the baseplate and the ambient
temperature.
Recommended Upright Mounting Orientation
The load rating with the baseplate mounted upright on a panel is:
100% at 60
°C
(140
°F
)
Figure 12-4. Recommended PLC Mounting Orientation
Derated Horizontal Mounting Orientation
Power supply load ratings with the baseplate mounted horizontally are:
Temperature at 25
°
C (77
°F
) – full load
Temperature at 60
°C
(140
°F
) – 50% of full load
Figure 12-5. Derated PLC Mounting Orientation
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