iC7-Automation Air-cooled Enclosed Drives
Operating Guide
6.
Connect the grounding conductors to the grounding bar.
Illustration 20: Cabling of the Enclosed Drive
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Motor cables
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Mains cables
6.7 UL Cabling
The UL variant of the enclosed drive includes a sealed bottom plate for free cutting of the cable entry holes.
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2
Illustration 21: UL Floor Components
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PE busbar
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Plate for cutting of the cable entry holes
6.8 Parameter Settings for IT Mains
If the drive is supplied from an isolated mains (IT mains, floating delta, or grounded delta) or TT/TN-S mains with grounded leg, it is
recommended to check the parameter settings of the grid type and RFI. The filter capacitors between the chassis and the DC link
should be cut off via the parameters to avoid damage to the DC link and to reduce the ground capacity currents.
See more information in the iC7 Series Industry Application Guide.
Keep the filter capacitors between the chassis and the DC link in these cases:
•
When optimal EMC performance is needed
•
When parallel motors are used
•
When the motor cable is longer than 25 m (82 ft)
36 | Danfoss A/S © 2023.09
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Grounding conductor
AQ330347384398en-000201 / 139Z8096
Electrical Installation
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