Danfoss VLT AutomationDrive FC 300 Design Manual page 103

FC 300 Design Guide
Illustration 6.12: Terminal in details
NB!
Power connections can be made to positions A or B
Cooling
Cooling can be obtained in different ways, by using the cooling ducts in the bottom and the top of the unit, by using the ducts in the rear of the unit or
by combining the cooling possibilities.
Duct cooling
A dedicated option has been developed to optimise installation of IP00 / Chassis enclosed frequency converters in Rittal TS8 enclosures utilizing the fan
of the frequency converter for forced cooling.
Back cooling
Using the channel from the back allows easy installation in for example control rooms. The unit mounted to the rear of the enclosure allows a similar
easy cooling of the units as the duct cooling principle. The hot air is ventilated out of the back of the enclosure. This offers a solution where the hot
cooling air from the frequency converter does not cause heating of the control room.
NB!
A small door fan is required on the Rittal cabinet to provide additional cooling within the drive.
Installation of Duct Cooling Kit in Rittal enclosures
Please see
Airflow
The necessary airflow over the heat sink must be secured. The flow rate is shown below.
IP21 / NEMA 1 &
IP54 / NEMA 12
IP00 / Chassis
Table 6.4: Heatsink Air Flow
, for further information.
Enclosure
D1 and D2
E1
D3 and D4
E2
MG.33.BA.02 - VLT ® is a registered Danfoss trademark
Door fan / Top fan airflow
3
170 m /h (100 cfm)
340 m 3 /h (200 cfm)
255 m 3 /h (150 cfm)
255 m 3 /h (150 cfm)
6. How to Install
Airflow over heatsink
3
765 m /h (450 cfm)
1444 m 3 /h (850 cfm)
765 m 3 /h (450 cfm)
1444 m 3 /h (850 cfm)
6
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