Danfoss VLT AutomationDrive FC 301 Programming Manual page 105

Parameter Descriptions
4-12 Motor Speed Low Limit [Hz]
Range: Function:
Size [ 0 - par. 4-14 Enter the minimum limit for motor
related Hz] speed. The motor speed low limit
*
can be set to correspond to the
minimum output frequency of the
motor shaft. The motor speed low
limit must not exceed the setting in
parameter 4-14 Motor Speed High
Limit [Hz].
4-13 Motor Speed High Limit [RPM]
Range: Function:
Size [ par. 4-11 - Enter the maximum limit for motor
related 60000 RPM] speed. The motor speed high limit
*
can be set to correspond to the
manufacturer's maximum nominal
motor speed. The motor speed high
limit must exceed the setting in
parameter 4-11 Motor Speed Low
Limit [RPM].
4-14 Motor Speed High Limit [Hz]
Range: Function:
Size [ par. 4-12 - Enter the maximum limit for motor
related par. 4-19 Hz] speed in Hz. Parameter 4-14 Motor
*
Speed High Limit [Hz] can be set to
correspond to the manufacturer's
recommended maximum motor
speed. The motor speed high limit
must exceed the value in
parameter 4-12 Motor Speed Low
Limit [Hz]. The output frequency
must not exceed 10% of the
switching frequency
(parameter 14-01 Switching
Frequency).
4-16 Torque Limit Motor Mode
Range: Function:
Size [ 0 - This function limits the torque on
related 1000.0 %] the shaft to protect the mechanical
*
Application [Application installation.
dependent dependent]
*
NOTICE
Changing parameter 4-16 Torque Limit Motor Mode when
parameter 1-00 Configuration Mode is set to [0] Speed
open loop, parameter 1-66 Min. Current at Low Speed is
automatically readjusted.
M0013101
Programming Guide
NOTICE
The torque limit reacts to the actual, non-filtered torque,
including torque spikes. This is not the torque that is
seen from the LCP or the fieldbus as that torque is
filtered.
4-17 Torque Limit Generator Mode
Range:
100 %
*
4-18 Current Limit
Range:
Size
related
*
4-19 Max Output Frequency
Range:
Size
related
*
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Function:
[ 0 - This function limits the torque on
1000.0 %] the shaft to protect the mechanical
installation.
Function:
NOTICE
[ 1.0 -
1000.0 %]
If [20] ATEX ETR is selected in
parameter 1-90 Motor Thermal
Protection, set
parameter 4-18 Current Limit
current limit to 150%.
This is a true current limit function
that continues in the oversyn-
chronous range. However, due to
field weakening the motor torque
at current limit will drop
accordingly when the voltage
increase stops above the
synchronized speed of the motor.
Function:
NOTICE
[ 1 - 590 Hz]
This parameter cannot be
adjusted while the motor is
running.
NOTICE
Maximum output frequency
cannot exceed 10% of the
inverter switching frequency
(parameter 14-01 Switching
Frequency).
Provides a final limit on the output
frequency for improved safety in
applications where overspeeding is
to be avoided. This limit is final in
all configurations (independent of
the setting in
parameter 1-00 Configuration Mode).
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