Rockwell Automation 20G PowerFlex 755 IP00 NEMA/UL Open Drive - Frames 8-10 - Manual (Page 17)

Rockwell Automation Publication 750-IN020C-EN-P - May 2012 17
PowerFlex 755 IP00, NEMA/UL Open Type Drive
In addition, the bus bar must be supported as detailed in the figure below.
Environmental Requirements
The drive shall be mounted in an enclosure with 40 °C ambient external to the
enclosure and surrounding airflow as described on pages
17 … 20 .
Refer to the PowerFlex 750-Series Technical Data, publication 750-TD001 for
detailed specifications and ratings.
Cooling Airflow and Ventilation - IP20, NEMA Type 1 Enclosures
The PowerFlex 755 drive is designed for a dual airflow system consisting of drive
power cooling and enclosure cooling. The drive blower generates a high velocity
airflow for the the drive power cooling through a duct network that also serves as
the frame of an open type drive. The enclosure cooling requirements must be
supplied as specified.
When mounting the drive vertically, the enclosure door must be provided with
openings for air intake as shown. To achieve sufficient cooling inside the
enclosure, the dimensions for total area and location of incoming airflow
provided in
Figure 1 should be followed. Horizontal mounting details for single
drive units can be found on page 26 .
The cooling arrangements inside the enclosure must be such that they
prevent hot output air from mixing with the incoming fresh air.
Heat Dissipation
ATTENTION: To guard against equipment damage caused by excessive heat,
proper airflow must be maintained at all times. Refer to the guidelines on the
following pages.
Frame Enclosure Cooling Drive Power Cooling Total (if drive is fully enclosed)
8 2000 Watts 8200 Watts 10,200 Watts
9 4000 Watts 16,400 Watts 20,400 Watts
10 6000 Watts 24,600 Watts 30,600 Watts
Drive
Power Terminal
Support within 305 mm (12.0 in.)
Bus Bar
T45 - M10 x 35 mm SEMS
22.4 N•m (200 lb•in)