Motor Speed Direction; Motor Speed Low Limit; Motor Speed High Limit; Current Limit - Danfoss VLT AutomationDrive FC 302 Programming Manual

Parameter Descriptions

4-10 Motor Speed Direction

Option:
3 3
[0] Clockwise
[1] Counter
clockwise
[2] Both
directions
4-11 Motor Speed Low Limit [RPM]
Range:
Size [ 0 - par.
related 4-13
*
RPM]
4-12 Motor Speed Low Limit [Hz]
Range:
Size [ 0 -
related par. 4-14
*
Hz]
4-13 Motor Speed High Limit [RPM]
Range:
Size [ par.
related 4-11 -
*
60000
RPM]
88
VLT
Function:
NOTICE
This parameter cannot be adjusted while
the motor is running.
Select the motor speed direction(s) required. Use
this parameter to prevent unwanted reversing.
When parameter 1-00 Configuration Mode is set
to [3] Process, parameter 4-10 Motor Speed
Direction is set to [0] Clockwise as default. The
setting in parameter 4-10 Motor Speed Direction
does not limit options for setting
parameter 4-13 Motor Speed High Limit [RPM].
The reference is set to CW rotation. Reversing
input (default terminal 19) must be open.
The reference is set to CCW rotation. Reversing
input (default terminal 19) must be closed. If
reversing is required with reverse input open, the
motor direction can be changed by
parameter 1-06 Clockwise Direction.
Allows the motor to rotate in both directions.
Function:
Enter the minimum limit for motor speed.
The motor speed low limit can be set to
correspond to the manufacturer's
recommended minimum motor speed.
The motor speed low limit must not
exceed the setting in
parameter 4-13 Motor Speed High Limit
[RPM].
Function:
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].
Function:
Enter the maximum limit for motor
speed. The motor speed high limit can
be set to correspond to the manufac-
turer's maximum nominal motor speed.
The motor speed high limit must exceed
the setting in parameter 4-11 Motor
Speed Low Limit [RPM].
Danfoss A/S © 10/2018 All rights reserved.
®
AutomationDrive FC 301/302
4-14 Motor Speed High Limit [Hz]
Range:
Size
related 4-12 -
*
par.
4-19 Hz]
4-16 Torque Limit Motor Mode
Range:
Size related
*
Application
dependent
*
NOTICE
Changing parameter 4-16 Torque Limit Motor Mode when
parameter 1-00 Configuration Mode is set to [0] Speed
open loop, parameter 1-66 Min. Current at Low Speed is
automatically readjusted.
NOTICE
The torque limit reacts to the actual, non-filtered torque,
including torque spikes. This is not the torque that is
seen from the LCP or the fieldbus as that torque is
filtered.
4-17 Torque Limit Generator Mode
Range:
100 % [ 0 - 1000.0 %] This function limits the torque on the
*

4-18 Current Limit

Range:
Size
related 1000.0 %
*
]
Function:
[ par. Enter the maximum limit for motor speed in
Hz. Parameter 4-14 Motor Speed High Limit
[Hz] can be set to correspond to the
manufacturer's recommended maximum
motor speed. The motor speed high limit
must exceed the value in
parameter 4-12 Motor Speed Low Limit [Hz].
The output frequency must not exceed 10%
of the switching frequency
(parameter 14-01 Switching Frequency).
Function:
[ 0 - 1000.0 %] This function limits the
[Application torque on the shaft to
dependent] protect the mechanical
installation.
Function:
shaft to protect the mechanical instal-
lation.
Function:
NOTICE
[ 1.0 -
If [20] ATEX ETR is selected in
parameter 1-90 Motor Thermal
Protection, set parameter 4-18 Current
Limit current limit to 150%.
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.
MG33MP02