Parameter 14-55 Output Filter
Table 510: Parameter 14-55 Output Filter
14-55 Output Filter
Default Value: [0] No filter
Parameter Type: Option
Setup: All set-ups
Conversion Index: -
Data Type: Uint8
Change during operation: False
N O T I C E
This parameter cannot be adjusted while the motor is running.
N O T I C E
Reset the drive after selecting
[2] Sine-wave filter fixed.
C A U T I O N
OVERHEATING OF DRIVE
When using sine-wave filters, there is a risk of overheating of the drive, which can result in personal injury and equipment dam-
age. Always set
parameter 14-55 Output Filter
to
[2] Sine-wave fixed
when using a sine-wave filter.
Select the type of output filter connected.
Op-
tion
Name
Description
[0]*
No filter
This is the default setting and should be used with dU/dt filters or high frequency common mode (HFCM)
filters.
[1]
Sine-wave
filter
This setting is only for backwards compatibility. It enables operation with flux control principle when
pa-
rameter 14-56 Capacitance Output Filter
and
parameter 14-57 Inductance Output Filter
are programmed with
the output filter capacitance and inductance. It does not limit the range of the switching frequency.
[2]
Sine-Wave
Filter Fixed
This parameter sets a minimum allowed limit to the switching frequency and ensures that the filter is op-
erated within the safe range of switching frequencies. Operation is possible with all control principles. For
flux control principle, program
parameter 14-56 Capacitance Output Filter
and
parameter 14-57 Inductance
Output Filter
(these parameters have no effect in VVC
+
and U/f). The modulation pattern is set to SFAVM,
which gives the lowest acoustic noise in the filter.
Parameter 14-56 Capacitance Output Filter
Table 511: Parameter 14-56 Capacitance Output Filter
14-56 Capacitance Output Filter
Default value: Size related
Parameter type: Range, 0.1 - 6500 uF
Setup: All setups
Conversion index: -7
Data type: Uint16
Change during operation: False
Compensation function of the LC filter requires the per-phase equivalent star-connected capacitance of the filter (3 times the ca-
pacity between 2 phases when capacitance is delta connection). Set the capacitance of the output filter. The value can be found on
the filter label.
N O T I C E
This is required for correct compensation in flux mode (
parameter 1-01 Motor Control Principle
).
AU373327181955en-000101 / 130R1208 | 279
Danfoss A/S © 2021.08
Parameter Descriptions
VLT® AutomationDrive EZ FC 321
Programming Guide