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Operating Guide | VACON® NXS/NXP Air-cooled
6. Attach the safety covers. For the tightening torques of the screws, see
the control cables or the cables of the AC drive are not caught between the frame and the safety covers.
7. Close the cabinet doors.
6.6 Installation in an IT System
If mains is impedance-grounded (IT), the AC drive must have the EMC protection level C4. If the drive has the EMC protection level C2,
it is necessary to change it to C4. See instructions in:
•
6.6.1 Installing the AC drive in an IT System, FR4–FR6
•
6.6.2 Installing the AC Drive in an IT System, FR7
•
6.6.3 Installing the AC Drive in an IT System, FR8–FR11
For equivalents of EMC levels in VACON
SHOCK HAZARD FROM THE COMPONENTS
The components of the drive are live when the drive is connected to mains.
Do not make changes in the AC drive when it is connected to mains.
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DAMAGE TO THE AC DRIVE FROM INCORRECT EMC LEVEL
The EMC level requirements for the AC drive depend on the installation environment. An incorrect EMC level can damage the
drive.
Before connecting the AC drive to the mains, make sure that the EMC level of the AC drive is correct for the mains.
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Danfoss A/S © 2020.02
®
AC drives, see
3.4 Description of the Type
W A R N I N G
N O T I C E
12.5 Tightening Torques for Cover
Code.
AQ275638903263en-000301 / DPD00910| 93
Electrical Installation
Screws. Make sure that
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