Cooling And Airflow - Danfoss VLT FC 102 Operating Instructions Manual

4 How to Install
Terminal locations - Inverter
4
Illustration 4.19: Terminal locations - Inverter Cabinet (front, left and right side view). The gland plate is
42 mm below .0 level.
1) Earth ground bar
2) Motor terminals
3) Brake terminals

4.3.8 Cooling and Airflow

Cooling
Cooling can be obtained in different ways, by using the cooling ducts in the bottom and the top of the unit, by taking air in and out the back of the unit
or by combining the cooling possibilities.
Back cooling
The backchannel air can also be ventilated in and out the back of a Rittal TS8 enclosure. This offers a solution where the backchannel could take air from
outside the facility and return the heat loses outside the facility thus reducing air-conditioning requirements.
NB!
A door fan(s) is required on the enclosure to remove the heat losses not contained in the backchannel of the drive and any additional
losses generated from other components installed inside the enclosure. The total required air flow must be calculated so that the
appropriate fans can be selected. Some enclosure manufacturers offer software for performing the calculations (i.e. Rittal Therm
software).
Airflow
The necessary airflow over the heat sink must be secured. The flow rate is shown below.
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VLT HVAC Low Harmonic Drive Operating In-
®
MG.16.A1.02 - VLT is a registered Danfoss trademark
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