Danfoss VLT AutomationDrive FC 301 Programming Manual page 240

Parameter Descriptions
14-51 DC-Link Compensation
Option:
3 3
[0] Off
[1] On
14-52 Fan Control
Select minimum speed of the main fan.
Option:
[0] Auto
*
[1] On 50%
[2] On 75%
[3] On 100%
[4] Auto (Low
temp env.)
14-53 Fan Monitor
Option:
238
®
VLT AutomationDrive FC 301/302
Function:
applications, but pay attention
when operating in field weakening
as it can generate speed oscillations
at the motor shaft. In field
weakening, turn off DC-link
compensation.
Disables DC-link compensation.
Enables DC-link compensation.
Function:
Select [0] Auto to run fan only
when internal temperature in
frequency converter is in range
35 °C (95 °F) to approximately
55 °C (131 °F).
Fan runs at low speed below 35 °C
(95 °F), and at full speed at approx-
imately 55 °C (131 °F).
The fan always runs at 50% speed
or above. The fan runs at 50%
speed at 35 °C (95 °F), and at full
speed at approximately 55 °C
(131 °F).
The fan always runs at 75% speed
or above. The fan runs at 75%
speed at 35 °C (95 °F), and at full
speed at approximately 55 °C
(131 °F).
The fan always runs at 100% speed.
This option is the same as [0] Auto,
but with special considerations
around and below 0 °C (32 °F). In
option [0] Auto there is a risk that
the fan starts running around 0 °C
as the frequency converter detects
a sensor fault and thus protects 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 prevents the
negative effects of this further
cooling and avoids warning 66, Heat
sink Temperature Low.
Function:
Select the frequency converter
action if a fan fault is detected.
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14-53 Fan Monitor
Option: Function:
[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.
OVERHEATING OF
FREQUENCY CONVERTER
When using sine-wave filters,
there is a risk of overheating
of the frequency converter,
which can result in personal
injury and equipment damage.
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.
[0] No Filter This is the default setting and
*
should be used with dU/dt filters or
high frequency common mode (HF-
CM) filters.
[1] Sine-Wave This setting is only for backwards
Filter 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.
[2] Sine-Wave This parameter sets a minimum
Filter Fixed 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
CAUTION
M0013101