e3
0b
h2
85
.1
0
9.
For MR8, attach the EMC shield plate, the cable entry plate, and the cable cover.
10.
For MR9, attach the EMC shield plate, the sealing plate, the cable entry plate, and the cable cover.
11.
Close the cover of the drive.
6.6 Installation in an IT System
If your mains is impedance-grounded (IT), the AC drive must have the EMC protection level C4. If the drive has the EMC protection level
C2 or C3, it is necessary to change it to C4. To do this, remove the EMC jumpers.
WARNING
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.
NOTICE
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.
NOTICE
For a 600 and 690V product that is configured for a C4 installation on IT network, the maximum switching frequency is limited
to the default 2 kHz.
6.6.1 Installing the AC drive in an IT System, MR4-MR6
Context:
Use these instructions to change the EMC protection of the AC drive to level C4.
Prerequisites:
Open the cover of the AC drive (for MR4-MR6) and remove the cable cover (for MR4-MR5) as instructed in
.
Electrical Installation
Operating Guide | VACON® 100 Wall-mounted Drives
AQ298036140958en-000101 / DPD01711| 53
Danfoss A/S © 2019.05
