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N O T I C E
With IP21 option kit mounted, a distance of 50 mm (2 in) between the units is required.
5.3 Mechanical Installation H13-H14
5.3.1 Tools Needed
Receiving/unloading
I-beam and hooks rated to lift the weight of the drive. Refer to 5.1 Power Ratings, Weights, and Dimensions.
Crane or other lifting aid to place the unit into position.
Installation
Drill with a 12 mm (1/2 in) drill bit.
Tape measurer.
Phillips and flat bladed screwdrivers.
Wrench with 7–17 mm metric sockets.
Wrench extensions.
T25 and T50 Torx drives.
Sheet metal punch and/or pliers for cable entry plate.
5.3.2 Installation and Cooling Requirements
N O T I C E
OVERHEATING
Improper mounting can result in overheating and reduced performance.
Install the drive according to the installation and cooling requirements.
Installation requirements
Ensure drive stability by mounting the drive vertically to a solid flat surface.
Ensure that the strength of the mounting location supports the drive weight. Ensure that the mounting location allows access
to open the enclosure door. Refer to 5.1 Power Ratings, Weights, and Dimensions.
Ensure that there is enough space around the drive for cooling airflow.
Place the drive as near to the motor as possible. Keep the motor cables as short as possible. See 9.2.4 Cable Length and Cross-
section.
Ensure that the location allows for cable entry at the bottom of the drive.
Cooling and airflow requirements
Ensure that top and bottom clearance for air cooling is provided. Clearance requirement: 225 mm (9 in).
Consider derating for temperatures starting between 45 °C (113 °F) and 50 °C (122 °F) and elevation 1000 m (3300 ft) above sea
level. See chapter Derating for detailed information.
The drive uses back-channel cooling to circulate the heat sink cooling air. The cooling duct carries approximately 90% of the heat
out of the back channel of the drive. Redirect the back-channel air from the panel or room by using:
Duct cooling. Back-channel cooling kits are available to direct the air away from the panel when an IP20/chassis drive is installed
in a Rittal enclosure. Use of a kit reduces the heat in the panel and smaller door fans can be specified on the enclosure.
Cooling out the back (top and base covers). The back-channel cooling air can be ventilated out of the room so that the heat
from the back channel is not dissipated into the control room.
N O T I C E
One or more door fans are required on the enclosure to remove heat not contained in the back channel of the drive. The fans also
remove any additional losses generated by other components inside the drive.
AJ363928382091en-000101 / 130R098356 | Danfoss A/S © 2021.04
Mechanical Installation
Considerations
VLT® Flow Drive FC 111
Design Guide
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