Danfoss VLT AutomationDrive FC 301 Programming Manual page 167

Parameter Descriptions
14-52 Fan Control
Select minimum speed of the main fan.
Option: Function:
[0] Auto Select [0] Auto to run fan only when internal
*
temperature in frequency converter is in range
35 °C to approximately 55 °C.
Fan runs at low speed below 35 °C, and at full
speed at approximately 55 °C.
[1] On 50% The fan always runs at 50% speed or above. The
fan runs at 50% speed at 35 °C, and at full
speed at approximately 55 °C.
[2] On 75% The fan always runs at 75% speed or above. The
fan runs at 75% speed at 35 °C, and at full
speed at approximately 55 °C.
[3] On 100% The fan always runs at 100% speed.
[4] Auto This option is the same as [0] Auto, but with
special considerations around and below 0 °C. In
(Low
temp option [0] Auto there is a risk that the fan starts
running around 0 °C as the frequency converter
env.)
detects a sensor fault and thus protect the
frequency converter while reporting warning 66,
Heat sink Temperature Low. Option [4] Auto (Low
temp env.) can be used in very cold
environments and prevent the negative effects
of this further cooling and avoid warning 66,
Heat sink Temperature Low.
14-53 Fan Monitor
Option: Function:
Select the frequency converter action if a fan
fault is detected.
[0] Disabled
[1] Warning
*
[2] Trip
14-55 Output Filter
Option: Function:
NOTICE
This parameter cannot be adjusted while the
motor is running.
NOTICE
Reset the frequency converter after selecting
[2] Sine-Wave Filter Fixed.
MG33ML02
Programming Guide
14-55 Output Filter
Option:
[0] No
Filter
*
[1] Sine-
Wave
Filter
[2] Sine-
Wave
Filter
Fixed
14-56 Capacitance Output Filter
Compensation function of the LC filter requires the per phase
equivalent star-connected capacitance of the filter (3 times the
capacity between 2 phases when capacitance is delta
connection).
Range:
Size related
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Function:
CAUTION
OVERHEATING OF FREQUENCY
CONVERTER
Always set parameter 14-55 Output Filter to
[2] Sine-wave fixed when using a sine-wave
filter. Failure to do so can result in
overheating of the frequency converter,
which can result in personal injury and
equipment damage.
Select the type of output filter connected.
This is the default setting and should be used with
dU/dt filters or high frequency common mode (HF-
CM) filters.
This setting is only for backwards compatibility. It
enables operation with flux control principle when
parameter 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.
This parameter sets a minimum allowed limit to the
switching frequency and ensures that the filter is
operated 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
modulation pattern is set to SFAVM, which gives the
lowest acoustic noise in the filter.
Function:
[0.1 - 6500 Set the capacitance of the output
*
uF] filter. The value can be found on the
filter label.
NOTICE
This is required for correct
compensation in flux mode
(parameter 1-01 Motor Control
Principle).
3
+
and U/f ). The
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