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Enclosure protection
Frame size
Door fan / Top fan airflow
Airflow over heatsink
IP21 / NEMA 1
IP54 / NEMA 12
D1 and D2
170 m
3
/h (100 cfm)
765 m
3
/h (450 cfm)
E1
340 m
3
/h (200 cfm)
1444 m
3
/h (850 cfm)
IP21 / NEMA 1
F1, F2, F3 and F4
700 m
3
/h (412 cfm)*
985 m
3
/h (580 cfm)
IP54 / NEMA 12
F1, F2, F3 and F4
525 m
3
/h (309 cfm)*
985 m
3
/h (580 cfm)
IP00 / Chassis
D3 and D4
255 m
3
/h (150 cfm)
765 m
3
/h (450 cfm)
E2
255 m
3
/h (150 cfm)
1444 m
3
/h (850 cfm)
* Airflow per fan. Frame size F contain multiple fans.
Table 3.2: Heatsink Air Flow
NB!
The fan runs for the following reasons:
1.
AMA
2.
DC Hold
3.
Pre-Mag
4.
DC Brake
5.
60% of nominal current is exceeded
6.
Specific heatsink temperature exceeded (power size dependent).
Once the fan is started it will run for minimum 10 minutes.
3.3.7 Installation on the Wall - IP21 (NEMA 1) and IP54 (NEMA 12) Units
This only applies to frame sizes D1 and D2 . It must be considered where to install the unit.
Take the relevant points into consideration before you select the final installation site:
•
Free space for cooling
•
Access to open the door
•
Cable entry from the bottom
Mark the mounting holes carefully using the mounting template on the wall and drill the holes as indicated. Ensure proper distance to the floor and the
ceiling for cooling. A minimum of 225 mm (8.9 inch) below the frequency converter is needed. Mount the bolts at the bottom and lift the frequency
converter up on the bolts. Tilt the frequency converter against the wall and mount the upper bolts. Tighten all four bolts to secure the frequency converter
against the wall.
Illustration 3.24: Lifting method for mounting drive on wall
VLT AQUA High Power Operation Instructions
3 How to Install
MG.20.P3.02 - VLT
®
is a registered Danfoss trademark
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