3.18: Position of ground terminals IP 21 (NEMA type 1) and IP 54 (NEMA type 12)
Cooling
Cooling can be performed 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 cooling options.
Airflow
The necessary airflow over the heatsink must be ensured. The flow rate is shown below.
Enclosure
Door fan/Top fan
airflow
Airflow over heat-
sink
IP 21 / NEMA 1 &
IP 54 / NEMA 12
D1 and D2
6,003 ft
3
/h [170 m
3
/h]
(100 cfm)
27,015 ft
3
/h [765 m
3
/
h] (450 cfm)
E1
12,006 ft
3
/h [340 m
3
/
h] (200 cfm)
50994 ft
3
/h [1444 m
3
/
h] (850 cfm)
IP 00 / Chassis
D3 and D4
9,005 ft
3
/h [255 m
3
/h]
(150 cfm)
27,015 ft
3
/h [765 m
3
/
h] (450 cfm)
E2
9,005 ft
3
/h [255 m
3
/h]
(150 cfm)
50994 ft
3
/h [1444 m
3
/
h] (850 cfm)
3.2: Heatsink Air Flow
3. How to Install
VLT
®
Automation Drive FC 300
Instruction Manual High Power
30
MG.33.U1.22 - VLT
®
is a registered Danfoss trademark.
3