Parameters: 4-** Limits/Warnings - Danfoss VLT Midi Drive FC 280 Programming Manual

Parameter Descriptions

4.5 Parameters: 4-** Limits/Warnings

4-10 Motor Speed Direction
Option: Function:
NOTICE
[0] Clockwise
*
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 Operation in both clockwise and counter-
directions clockwise directions are allowed.
4-12 Motor Speed Low Limit [Hz]
Range: Function:
0 Hz [ 0 - Enter the minimum limit for motor speed. The
*
500.0 Hz] 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:
NOTICE
65 [ 0.1 -
Hz 500 Hz]
*
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.
MG07C302
Programming Guide
4-18 Current Limit
Range:
Size
related
*
4-19 Max Output Frequency
Range:
Size
related
*
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 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 set to [0] Open Loop or [1]
Speed Closed Loop.
Option:
[0]
*
[2]
[4]
[6]
[8]
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 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 torque mode.
Option:
[0]
*
[2]
Danfoss A/S © 07/2016 All rights reserved.
Function:
[ 0 - This is a true current limit function that
1000 %] continues in the oversynchronous range.
However, due to field weakening, the
motor torque at current limit drops
accordingly when the voltage increase
stops above the synchronized motor
speed.
Function:
NOTICE
[ 0 -
500
This parameter cannot be adjusted
Hz]
while the motor is running.
NOTICE
Maximum output frequency cannot
exceed 10% of the inverter switching
frequency (parameter 14-01 Switching
Frequency).
Provide a final limit on the output frequency
for improved safety in applications at risk of
overspeeding. This limit is final in all configu-
rations (independent of the setting in
parameter 1-00 Configuration Mode).
No function
Analog in 53
Analog in 53 inv
Analog in 54
Analog in 54 inv
No function
Analog in 53
4
Function:
Function:
49
4