Rockwell Automation 20D PowerFlex 700S/700H Frames 10...14 IP00, NEMA/UL Open Power Structures - Manual (Page 15)

Rockwell Automation Publication PFLEX-IN020C-EN-P - July 2013 15
PowerFlex 700S and 700H Frames 10...14 IP00, NEMA/UL Open Power Structures
Directing the Internal Airflow
Cooling air must enter the enclosure through the ventilation openings on the
door and be exhausted out the top of the enclosure. To direct the hot air from the
power structure to the outlet at the top of the enclosure and prevent it from
circulating back to the fan, use either of the following arrangements:
Figure 8 - 600 mm (23.6 in.) Enclosure Air Recirculation Restriction Example
Figure 9 - 800 mm (31.5 in.) Enclosure Air Recirculation Restriction Example
Install a closed air duct from the power structure to the outlet on top of the enclosure.
Install shields in the gaps between the power structure and the enclosure walls. Place the shields above the
air outlet gaps at the structure sides.
IMPORTANT For drives that require multiple enclosures mounted side-by-side with
openings between the upper portions of the enclosures, shields must be
installed between enclosures to ensure proper air flow.
IMPORTANT The shields inside the enclosure must be located such that they prevent hot
output air from mixing with the cooler incoming air.
1
2
1 2 Air Duct Option Air Shield Option
Shield Between
Enclosures
1 2 Air Duct Option Air Shield Option Shield Between
Enclosures