Function and hardware description 29
For further information on the cable entry, see
• ACS580MV Base frame & TEU layout design
• Chapter Electrical installation, Cable entries for external connections.
Transformer unit
The integrated input transformer is placed on the right side of the drive. It is delivered as a
separate unit (TRU) and joint with the converter unit at the final installation location.
Transformer unit (drive type 11R6)
The transformer is air-cooled by means of one or two fan units, depending on the drive
size.
Optionally, the integrated input transformer is available as a step-up or step-down version.
Inverter unit
The inverter unit (INU) is part of the drive unit, i.e. it is located between the control unit and
the transformer. The INU contains the series connected low voltage power modules (see
section Power module) and the associated control equipment (control hub).
1 Fan units
2 Terminal block for monitoring and fan supply
3 Transformer
4 Transformer secondary terminals leading to the power modules
5 Transformer primary side power terminals
1
3
4
5
2
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