Danfoss VLT AAF006, Руководство по эксплуатации

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The automatic CT detection is still effective for filters in a
master/follower configuration but setting follower units
manually is recommended. Use the following procedure for
setting the CT values:
1. Program master unit parameter 300-10 Active Filter
Nominal Voltage .
2. Program master unit parameter 300-26 CT
Placement .
3. Perform an automatic CT detection on master
unit
parameter 300-29 Start Auto CT Detection .
4. Note the auto CT result and manually program
each follower unit.
5. Ensure identical settings in
parameter 300-10 Active Filter Nominal Voltage
and parameter 300-26 CT Placement on each unit.
Alternatively, each follower unit can conduct an automatic
CT detection after the master unit is turned off. Only run 1
auto CT detection at a time.
In addition to this CT setting, it is also necessary to set
each unit to have its respective role in the cascade
network.
Parameter 300-40 Master Follower Selection is set
to master or follower for each unit.
300-40 Master Follower Selection
Option: Function:
[0] Master If operating active filters in parallel, select
whether this filter is a master or a follower
active filter.
[1] Follower
[2]
*
Not Paralleled
NOTICE
Ensure that only 1 master is set in each group of parallel
connected filters. Verify that no other unit is set to
master.
After changing this parameter, additional parameters are
accessible. For the master units,
300-42 Number of Follower
AFs has to be programmed for the number of followers
connected.
300-41 Follower ID
Range: Function:
1
*
[1 - 3 ] Enter the unique ID of this follower. Verify that no
other follower uses the same ID.
NOTICE
Parameter 300-41 Follower ID is not accessible unless
parameter 300-40 Master Follower Selection is set to
follower.
NOTICE
Each follower should have its own follower ID. Verify
that no 2 followers 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 only controls this number
of followers.
NOTICE
Parameter 300-42 Num. of Follower AFs is not accessible
unless parameter 300-40 Master Follower Selection is set
to master.
Program each follower unit at parameter 300-41 Follower ID
with a unique ID.
Before starting the units by pushing [Auto On], check that
the following parameters all have been correctly
programmed and have similar values for all units sharing 1
set of CTs:
•
Parameter 300-00 Harmonic Cancellation Mode .
•
Parameter 300-20 CT Primary Rating .
•
300-22 CT Nominal Voltage .
•
Parameter 300-24 CT Sequence .
•
Parameter 300-25 CT Polarity
.
•
Parameter 300-26 CT Placement .
•
Parameter 300-30 Compensation Points .
•
Parameter 300-35 Cosphi Reference .
6.2 Programming
6.2.1 Quick Menu Mode
The LCP provides access to all parameters listed under the
Quick Menus. Press [Quick Menu] to display the list of
options in the quick menu.
Efficient parameter set-up for most applications
The parameters for most the applications are set up via
the
Quick Menu .
To set parameters through the [Quick Menu]:
1. Select [2] Quick set-up for selecting language,
compensation mode, CT set-up, etc.
2. Select [1] My personal menu to set up the LCP
readout parameters. If preset display is
acceptable, this operation can be left out.
It is recommended to do the set-up in the order listed.
Applications and Basic Prog... Operating Instructions
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