Danfoss VLT AutomationDrive FC 300, Programming Manual, Page: 66 / 219

4-16 Torque Limit Motor Mode
Range: Function:
Application
dependent
*
[Application
dependant] This function limits the
torque on the shaft to
protect the mechanical
installation.
NOTE
Changing 4-16 Torque Limit Motor Mode when 1-00 Configu-
ration Mode is set to Speed open loop [0], 1-66 Min. Current at
Low Speed is automatically readjusted.
NOTE
The torque limit reacts on the actual, non-filtrated torque,
including torque spikes. This is not the torque that is seen
from the LCP or the Fieldbus as that is filtered.
4-17 Torque Limit Generator Mode
Range: Function:
100.0 %
*
[Application
dependant] This function limits the torque on
the shaft to protect the
mechanical installation.
NOTE
The torque limit reacts on the actual, non-filtrated torque,
including torque spikes. This is not the torque that is seen
from the LCP or the Fieldbus as that is filtered.
4-18 Current Limit
Range: Function:
Application
dependent
*
[Application
dependant] 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
synchronised speed of the motor.
NOTE
If [20] or [21] is selected, 4-18 Current Limit current limit must
be set to 150%.
4-19 Max Output Frequency
Range: Function:
132.0 Hz
*
[1.0 -
1000.0 Hz] Provides a final limit on the output
frequency for improved safety in
applications where you want to avoid
accidental over-speeding. This limit is
final in all configurations (independent of
the setting in
1-00 Configuration Mode ).
NOTE
Max. output frequency cannot exceed 10% of the inverter
switching frequency (
14-01 Switching Frequency ).
4-19 Max Output Frequency cannot be adjusted while the
motor is running.
4-20 Torque Limit Factor Source
Option: Function:
Select an analog input for scaling the
settings in
4-16 Torque Limit Motor
Mode and 4-17 Torque Limit Generator
Mode from 0% to 100% (or inverse).
The signal levels corresponding to 0%
and 100% are defined in the analog
input scaling, e.g. parameter group
6-1*. This parameter is only active
when
1-00 Configuration Mode is in
Speed Open Loop or Speed Closed
Loop .
[0]
*
No function
[2] Analog in 53
[4] Analog in 53 inv
[6] Analog in 54
[8] Analog in 54 inv
[10] Analog in X30-11
[12] Analog in X30-11 inv
[14] Analog in X30-12
[16] Analog in X30-12 inv
4-21 Speed Limit Factor SourceOption
Option: Function:
Select an analog input for scaling the
settings in
4-19 Max Output Frequency
from 0% to 100% (or vice versa). The
signal levels corresponding to 0%
and 100% are defined in the analog
input scaling, e.g. parameter group
6-1*. This parameter is only active
when
1-00 Configuration Mode is in
Torque Mode .
[0]
*
No function
[2] Analog input 53
[4] Analog input 53 inv
[6] Analog input 54
[8] Analog input 54 inv
[10] Analog input X30-11
[12] Analog input X30-11
inv
[14] Analog input X30-12
[16] Analog input X30-12
inv
Parameter Descriptions FC 300 Programming Guide
MG.33.MB.02 - VLT
®
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