Danfoss VLT AutomationDrive FC 300 Programming Guide

4-14 Motor Speed High Limit [Hz]
Range: Function:
Application
dependent*
[Application dependant] Enter the maximum limit for motor speed. The Motor Speed High Limit can be set to correspond to
the manufacturer’s recommended maximum of the motor shaft. The Motor Speed High Limit must
exceed the in par. 4-12
Motor Speed Low Limit [Hz] . Only par. 4-11 Motor Speed Low Limit
[RPM]
or par. 4-12 Motor Speed Low Limit [Hz] will be displayed depending on other parameters in
the Main Menu and depending on default settings dependant on global location.
NB!
Max. output frequency cannot exceed 10% of the inverter switching frequency (par. 14-01
Switching Frequency ).
4-16 Torque Limit Motor Mode
Range: Function:
Application
dependent*
[Application dependant] This is a true torque limit function that can run into the oversynchronous range above nominal motor
speed.
Motor magnetisation drop is automatically compensated by a current increase.
Changing par. 4-16 Torque Limit Motor Mode when par. 1-00 Configuration Mode is set to Speed open loop [0], par. 1-66 Min. Current
at Low Speed
is automatically readjusted.
NB!
The frequency converter is trigged on torque spikes, i.e. the torque limit is detected form internally in the drive and not from LCP or
fieldbus.
4-17 Torque Limit Generator Mode
Range: Function:
100.0 %* [Application dependant] This is a true torque limit function that can run into the oversynchronous range above nominal motor
speed.
Motor magnetisation drop is automatically compensated by a current increase.
NB!
The frequency converter is trigged on torque spikes, i.e. the torque limit is detected form internally in the drive and not from LCP or
fieldbus.
4-18 Current Limit
Range: Function:
Application
dependent*
[Application dependant] 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 synchronised speed of the motor.
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 par. 1-00
Configuration Mode ).
3 Parameter descriptions FC 300 Programming Guide
86 MG.33.M8.02 - VLT
®
is a registered Danfoss trademark
3

Danfoss VLT AutomationDrive FC 300 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 300
Category	DC Drives
Language	English