Airflow
The necessary airflow over the heat sink must be secured.
The flow rate is shown in
.
The fan runs for the following reasons:
•
AMA
•
DC Hold
•
Pre-Mag
•
DC Brake
•
60% of nominal current is exceeded
•
Specific heatsink temperature exceeded (power
size dependent)
•
Specific Power Card ambient temperature
exceeded (power size dependent)
•
Specific Control Card ambient temperature
exceeded
Frame
Door fan/top fan
Heatsink fan
D1h/D3h
102 m
3
/hr (60 CFM)
420 m
3
/hr (250 CFM)
D2h/D4h
204 m
3
/hr (120 CFM)
840 m
3
/hr (500 CFM)
Table 2.2 Airflow
2.3.2 Lifting
Always lift the frequency converter using the dedicated
lifting eyes. Use a bar to avoid bending the lifting holes.
CAUTION
The angle from the top of the frequency converter to the
lifting cables should be 60
°
or greater.
130BC525.10
Illustration 2.1 Recommended Lifting Method
2.3.3 Wall Mounting - IP21 (NEMA 1) and
IP54 (NEMA 12) Units
Consider the following before selecting the final instal-
lation site:
•
Free space for cooling
•
Access to open the door
•
Cable entry from the bottom
Installation
VLT
®
AQUA Drive D-Frame
Operating Instructions
MG21A202 - VLT
®
is a registered Danfoss trademark
9
2
2
