Danfoss VLT Midi Drive FC 280 Programming Guide

4.5 Parameters: 4-** Limits/Warnings
4-10 Motor Speed Direction
Option: Function:
[0] Clockwise
NOTICE
The setting in parameter 4-10 Motor
Speed Direction has impact on
parameter 1-73 Flying Start.
Only operation in clockwise direction is
allowed.
[2] * Both
directions
Operation in both clockwise and counter-
clockwise directions are allowed.
4-12 Motor Speed Low Limit [Hz]
Range: Function:
0 Hz* [ 0 -
400.0 Hz]
Enter the minimum limit for motor 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].
4-14 Motor Speed High Limit [Hz]
Range: Function:
65
Hz*
[ 0.1 -
500 Hz]
NOTICE
Maximum output frequency cannot
exceed 10% of the inverter switching
frequency (parameter 14-01 Switching
Frequency).
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 value in parameter 4-12 Motor
Speed Low Limit [Hz].
4-16 Torque Limit Motor Mode
Range: Function:
Size related* [ 0 - 1000 %] This function limits the torque on
the shaft to protect the mechanical
installation.
4-17 Torque Limit Generator Mode
Range: Function:
100 %* [ 0 - 1000 %] This function limits the torque on the
shaft to protect the mechanical instal-
lation.
4-18 Current Limit
Range: Function:
Size
related*
[ 0 -
1000 %]
This is a true current limit function that
continues in the oversynchronous range.
However, due to eld weakening, the
motor torque at current limit drops
accordingly when the voltage increase
stops above the synchronized motor
speed.
4-19 Max Output Frequency
Range: Function:
Size
related*
[ 0 -
500
Hz]
NOTICE
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 nal limit on the output frequency
for improved safety in applications at risk of
overspeeding. This limit is nal in all congu-
rations (independent of the setting in
parameter 1-00 Conguration Mode).
4-20 Torque Limit Factor Source
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 dened in
the analog input scaling, for example parameter group 6-1*
Analog Input 1. This parameter is only active when
parameter 1-00 Conguration Mode is set to [0] Open Loop or [1]
Speed Closed Loop.
Option: Function:
[0] * No function
[2] Analog in 53
[4] Analog in 53 inv
[6] Analog in 54
[8] Analog in 54 inv
4-21 Speed Limit Factor Source
Select an analog input for scaling the settings in
parameter 4-19 Max Output Frequency 0–100% (or inverse). The
signal levels corresponding to 0% and 100% are dened in the
analog input scaling, for example parameter group 6-1* Analog
Input 1. This parameter is only active when
parameter 1-00 Conguration Mode is in torque mode.
Option: Function:
[0] * No function
[2] Analog in 53
Parameter Descriptions
VLT
®
Midi Drive FC 280
48 Danfoss A/S © 12/2015 All rights reserved. MG07C102
44

Danfoss VLT Midi Drive FC 280 Specifications

General

Brand	Danfoss
Model	VLT Midi Drive FC 280
Category	DC Drives
Language	English