Danfoss VLT AAF00x, Instruction Manual

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WARNING
Each follower should have it own follower ID. Verify that
no other follower have the same follower ID.
300-42 Num. of Follower AFs
Range: Function:
1
*
[1 - 3 ] Enter the total number of follower active filters. The
master active filter will only control this number of
followers.
NOTE!
300-42 Num. of Follower AFs is not accessible unless
300-40 Master Follower Selection is set to master.
Each follower unit has to be programmed at
300-41 Follower ID . The follower IDs need to be different
from one another.
Before starting the units (pushing auto-on button), it is
advised to check that the following parameters all have
been correctly programmed and have similar values for all
units sharing one set of CTs:
300-00 Harmonic Cancellation Mode
300-20 CT Primary Rating
300-22 CT Nominal Voltage
300-24 CT Sequence
300-25 CT Polarity
300-26 CT Placement
300-30 Compensation Points
300-35 Cosphi Reference
4.8 Final Set-Up and Test
External CT settings are programmed via parameter group
300-2*. It is advised to perform an automatic CT detection
for all stand-alone filters via
300-29 Start Auto CT Detection .
Filter supports all standard CTs with 1A or 5A secondary
rating.
NOTE!
The automatic CT detection is only possible with CT
installed on the source side
CTs should have an accuracy of 0.5% or better to ensure
sufficient accuracy.
To test the set-up and ensure that the active filter is
running correctly, follow these steps:
CAUTION
Incorrect current transformer connection, installation or
configuration will lead to unintended and uncontrollable
behavior of the filter.
1. 300-26 CT Placement
2. 300-29 Start Auto CT Detection
Follow these steps to ensure the correct installation of
current transformers:
1. Locate the CT.
2. Note the position in the installation as well as the
secondary and primary current levels.
3. Check that mechanical CT pin connection MK108
or MK101 is according to CT secondary rating.
4. Enter the CT location in 300-26 CT Placement .
5. Enter the primary current from the plate data in
this
300-20 CT Primary Rating .
Performing an Auto CT:
The automatic current transformer detection will set the CT
polarity, phase sequence and current ratio.
Stop the CT detection during operation:
Press the [off] key – the filter enters into alarm mode and
display show that the Auto CT was terminated by the user.
Successful CT detection:
The display will show the found ratios, parameters and the
phase sequence. Press [OK] to accept the found
parameters. After CT detection, the filter is ready to start
operation.
CT detection failed:
Danfoss CT auto detection support most standard CTs. The
auto CT detection will not succeed if:
•
CTs are not wired correctly
•
CTs are installed on the load side
•
Primary rate is not a standard size
•
Secondary rate and CT placement are not
configured
•
CT current primary rate is greater than 10 times
the filter current rate
How to Install VLT Active Filter AAF 00x
4-36 MG.90.V2.22 - VLT
®
is a registered Danfoss trademark
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