Installation In An It System; The Emc Jumper In Mr8 - Vacon 100 Flow Installation Manual
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Also See for 100 Flow:
- Applications manual (386 pages) ,
- User manual (81 pages) ,
- Installation instruction (40 pages)
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VACON · 90
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.
3
Remove the EMC jumper. Attach the cover of the
EMC box again.
8
LOCAL CONTACTS: HTTP://DRIVES.DANFOSS.COM/DANFOSS-DRIVES/LOCAL-CONTACTS/
COMMISSIONING AND ADDITIONAL INSTRUCTIONS
A. The EMC jumper
A
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Questions and answers
please I'm having a problem with my AC drive at my factory. there is a current overload on the display anytime I switch on the lift fan.
A current overload on the display of a Vacon 100 Flow AC drive when switching on the lift fan could be caused by the capacitive currents generated in the AC drive. These currents may affect the operation of fault current protective switches, potentially leading to incorrect detection and overload indication.
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