Parameter 4-17 Torque Limit Generator Mode
Table 229: Parameter 4-17 Torque Limit Generator Mode
4-17 Torque Limit Generator Mode
Default value: 100%
Parameter type: Range, 0 - 1000.0%
Setup: All setups
Conversion index: -1
Data type: Uint16
Change during operation: True
This function limits the torque on the shaft to protect the mechanical installation.
Parameter 4-18 Current Limit
Table 230: Parameter 4-18 Current Limit
4-18 Current Limit
Default value: Size related
Parameter type: Range, 1.0 - 1000.0%
Setup: All setups
Conversion index: -1
Data type: Uint32
Change during operation: True
This is a true current limit function that continues in the oversynchronous 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.
Parameter 4-19 Max Output Frequency
Table 231: Parameter 4-19 Max Output Frequency
4-19 Max Output Frequency
Default value: Size related
Parameter type: Range, 1 - 590 Hz
Setup: All setups
Conversion index: -1
Data type: Uint16
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
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
).
4.5.2 4-2* Limit Factors
Parameter 4-20 Torque Limit Factor Source
Table 232: Parameter 4-20 Torque Limit Factor Source
4-20 Torque Limit Factor Source
Default value: [1] No function
Parameter type: Option
Setup: All setups
Conversion index: –
Data type: Uint8
Change during operation: True
Select an analog input for scaling the settings in
parameter 4-16 Torque Limit Motor Mode
and
parameter 4-17 Torque Limit Generator
Mode
0–100% (or inverse). The signal levels corresponding to 0% and 100% are defined in the analog input scaling, for example
parameter group 6-1* Analog Input 1
. This parameter is only active when
parameter 1-00 Configuration Mode
is in
[0] Speed Open Loop
or
[1] Speed Closed Loop
.
AU373327181955en-000101 / 130R1208 | 125
Danfoss A/S © 2021.08
Parameter Descriptions
VLT® AutomationDrive EZ FC 321
Programming Guide
