How To Programme The Active Filter - Danfoss VLT FC 302 Operating Instructions Manual

Programming
14-22 Operation Mode
Option: Function:
15-05 Over Volt's. The frequency converter
resets during the next power-up.
Parameter 14-22 Operation Mode also reverts
to the default setting Normal operation [0].
[0] Normal
*
operation
[1] Control card
test
[2] Initialisation
[3] Boot mode
14-50 RFI Filter
Option: Function:
NOTICE
This parameter is only available for FC 302. It is
not relevant to FC 301 due to different design
and shorter motor cables.
[0] Off Select [0] Off if the frequency converter is fed by an
isolated mains source (IT mains).
If a filter is used, select [0] Off during charging to
prevent a high leakage current making the RCD switch.

6.2 How to Programme the Active Filter

The factory settings for the filter part of the Low Harmonic Drive are selected for optimal operation with a minimum of
additional programming. All CT-values, as well as frequency, voltage levels and other values directly linked to the frequency
converter configuration are pre-set.
Do not change any other parameters influencing the filter operation. However, selection of read-outs and information
displayed on the LCP status lines can be customised.
To set up the filter, 2 steps are necessary:
1. Change the nominal voltage in 300-10 Active Filter Nominal Voltage
2. Make sure the filter is in auto mode (press [Auto On])
MG37A202
Operating Instructions
14-50 RFI Filter
Option: Function:
[1] On
Illustration 6.14 RFI Filter Diagram
15-43 Software Version
Range:
0 [0 - 0 ] View the combined SW version (or 'package
*
Danfoss A/S © Rev. 2014-07-29 All rights reserved.
In this mode, the internal RFI filter capacitors between
chassis and the mains RFI filter circuit are cut-out to
reduce the ground capacity currents.
Select [1] On to ensure that the frequency converter
complies with EMC standards.
Function:
version') consisting of power SW and control SW.
6 6
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