8.5 INSTALLATION IN AN IT SYSTEM
If your mains is impedance-grounded (IT), the AC drive must have the EMC protection level
C4. If your drive has the EMC protection level C3, it is necessary to change it to C4. To do this,
remove the EMC jumper.
WARNING!
Do not make changes in the AC drive when it is connected to mains. The
components of the drive are live when the drive is connected to mains.
CAUTION!
Before you connect the AC drive to mains, make sure that the EMC level of the drive
is correct. An incorrect EMC level can cause damage to the drive.
8.5.1 THE EMC JUMPER IN MR8
Change the EMC protection of the AC drive to level C4.
1 Open the cover of the AC drive.
2 Find the EMC box. To get access to the EMC
jumper, remove the cover of the EMC box.
A. The EMC jumper
3 Remove the EMC jumper. Attach the cover of the
EMC box again.
VACON · 90 COMMISSIONING AND ADDITIONAL INSTRUCTIONS
8
LOCAL CONTACTS: HTTP://DRIVES.DANFOSS.COM/DANFOSS-DRIVES/LOCAL-CONTACTS/
To Next Page
Loading...
