18 Rockwell Automation Publication 750-IN020D-EN-P - May 2017
PowerFlex 755 IP00, NEMA/UL Open Type Drive
Figure 1 - Dual Airflow System
Figure 2 - Intake Duct Details
Ventilation Requirements
No. Free Area Description
1780 cm
2
(120.9 in.
2
)Enclosure
Cooling
2Enclosure Fans
(1)
(1) Enclosure fans are required and must meet or exceed the
performance shown in Figure 5
. In addition, the fans should be
mounted as high as possible on the door and aligned with the
front of the drive assembly.
3 See Important statement below Drive Power
Cooling
4811.6 cm
2
(125.8 in.
2
)
Enclosure Cooling
Drive Power Cooling
Shown with optional hood and inlet filter.
1
2
3
4
For vertical mounting applications a duct section must be fabricated to fit
between the gasket on the drive and the inside of the enclosure door.
Depending on the enclosure used, the drive mounting location in the enclosure
(set-back) can range between 12.7…54.5 mm (0.50…2.13 in.). To assure
sufficient Control Pod access, the maximum set-back of the drive behind the
door is 54.5 mm (2.13 in.). The duct must contact and slightly compress
the
gasket to seal the drive power cooling air from the enclosure cooling air.
Reference the dimensions provided in Figure 2
.
410.5
(16.16)
451.0
(17.75)
114.3
(4.50)
87.2
(3.43)
46.7
(1.84)
45°
Duct must contact gasket
when door is closed.
Gasket
Duct
(User Supplied)
Upper Vent
Filter not shown for clarity.
Measurements are in mm and (in).
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