Installation Guide | iC7-Automation Air-cooled Enclosed Drives Electrical Installation
3.6
Checking the Settings for the Auxiliary AC Voltage Transformer (+IHAT)
By default, the auxiliary AC voltage transformer (+IHAT) is connected by the terminal 500.
1. If the mains voltage is other than 500 V, move the wire to another primary terminal.
Select the correct primary terminal based on the mains voltage: 380, 400, 440, 460, or 480.
115(2)
N 380 400 440
450 480 500
0(2) 0(1)115(1)
e30bl780.10
Figure 17: Default Settings for Auxiliary AC Voltage Transformer (+IHAT)
3.7 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:
l When optimal EMC performance is needed.
l When parallel motors are used.
l When the motor cable is longer than 25 m (82 ft).
It is important to use isolation monitors that are rated for use together with power electronics.
Danfoss Drives Oy © 2024.09 AN484843731544en-000101 / 172K4825A | 17
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