4-10 Motor Speed Direction
Option:
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
,
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]
[0] Clockwise
The reference is set to CW rotation. Reversing
input (default terminal 19) must be open.
[1] Counter
clockwise
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
[2] Both
directions
Allows the motor to rotate in both directions.
4-11 Motor Speed Low Limit [RPM]
Range:
Function:
Size
related
*
[ 0 - par.
4-13
RPM]
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]
.
4-12 Motor Speed Low Limit [Hz]
Range:
Function:
Size
related
*
[ 0 -
par. 4-14
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
4-13 Motor Speed High Limit [RPM]
Range:
Function:
Size
related
*
[ par.
4-11 -
60000
RPM]
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
.
4-14 Motor Speed High Limit [Hz]
Range:
Function:
Size
related
*
[ par.
4-12 -
par.
4-19 Hz]
Enter the maximum limit for motor speed in
Hz.
Parameter 4-14 Motor Speed High Limit
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
).
4-16 Torque Limit Motor Mode
Range:
Function:
Size related
*
Application
dependent
*
[ 0 - 1000.0 %]
[Application
dependent]
This function limits the
torque on the shaft to
protect the mechanical
installation.
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:
Function:
100 %
*
[ 0 - 1000.0 %] This function limits the torque on the
shaft to protect the mechanical instal-
lation.
4-18 Current Limit
Range:
Function:
Size
related
*
[ 1.0 -
1000.0 %
]
NOTICE
If
[20] ATEX ETR
is selected in
parameter 1-90 Motor Thermal
Protection
, set
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.
Parameter Descriptions
VLT
®
AutomationDrive FC 301/302
88
Danfoss A/S © 10/2018 All rights reserved.
MG33MP02
3
3
Summary of Contents for VLT AutomationDrive FC 302
Page 2: ......