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.
130BC253.10
Illustration 2.1 Position Lifting Straps where Indicated
WARNING
The angle from the top of the frequency converter to the
lifting cables should be 60° or greater.
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
2.4 Electrical Installation
2.4.1 General Requirements
This section contains detailed instructions for wiring the
frequency converter. The following tasks are described:
•
Wiring the motor to the frequency converter
output terminals
•
Wiring the AC mains to the frequency converter
input terminals
•
Connecting control and serial communication
wiring
•
After power has been applied, checking input
and motor power; programming control terminals
for their intended functions
Installation
VLT
®
HVAC Drive D-Frame
Operating Instructions
8
MG16D102 - VLT
®
is a registered Danfoss trademark
2
2
