Parameters: 4-** Limits/Warnings - Danfoss VLT AutomationDrive FC 301 Programming Manual

Parameter Descriptions

3.6 Parameters: 4-** Limits/Warnings

3.6.1 4-1* Motor Limits
Define torque, current and speed limits for the motor, and
the reaction of the frequency converter when the limits are
3 3
exceeded.
A limit may generate a message on the display. A warning
always generates a message in the display or on the
fieldbus. A monitoring function may initiate a warning or a
trip, upon which the frequency converter stops and
generates an alarm message.
4-10 Motor Speed Direction
Option:
[0] Clockwise
[1] Counter
clockwise
[2] Both
directions
4-11 Motor Speed Low Limit [RPM]
Range:
Size related
*
par. 4-13
RPM]
4-12 Motor Speed Low Limit [Hz]
Range:
Size related
*
par.
4-14 Hz]
70
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 1-00 Configuration Mode is set to [3]
Process, 4-10 Motor Speed Direction is set to [0]
Clockwise as default. The setting in 4-10 Motor
Speed Direction does not limit options for setting
4-13 Motor Speed High Limit [RPM].
The reference is set to CW rotation. Reversing
input (Default term 19) must be open.
The reference is set to CCW rotation. Reversing
input (Default term 19) must be closed. If
Reversing is required with 'Reverse' input is
open the motor direction can be changed by
1-06 Clockwise Direction
Allows the motor to rotate in both directions.
Function:
[ 0 - 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
4-13 Motor Speed High Limit [RPM].
Function:
[ 0 - 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 4-14 Motor Speed High Limit
[Hz].
®
VLT AutomationDrive FC 301/302 Programming Guide
4-13 Motor Speed High Limit [RPM]
Range:
Size related
NOTICE
Max. output frequency cannot exceed 10% of the
inverter switching frequency (14-01 Switching Frequency).
4-14 Motor Speed High Limit [Hz]
Range:
Size
related
*
NOTICE
Max. output frequency cannot exceed 10% of the
inverter switching frequency (14-01 Switching Frequency).
4-16 Torque Limit Motor Mode
Range:
Size related
Application
dependent
NOTICE
Changing 4-16 Torque Limit Motor Mode when
1-00 Configuration Mode is set to [0] Speed open loop,
1-66 Min. Current at Low Speed is automatically
readjusted.
NOTICE
The torque limit reacts on the actual, non-filtrated
torque, including torque spikes. This is not the torque
that is seen from the LCP or the Fieldbus as that is
filtered.
4-17 Torque Limit Generator Mode
Range:
100 %
*
MG33MH02 - Rev. 2013-09-30
Function:
[ par. Enter the maximum limit for motor
*
4-11 - speed. The Motor Speed High Limit can
60000 be set to correspond to the
RPM] manufacturer's maximum rated motor
speed. The Motor Speed High Limit
must exceed the setting in 4-11 Motor
Speed Low Limit [RPM].
Function:
[ par. Enter the max limit for motor speed.
4-12 - 4-14 Motor Speed High Limit [Hz] can
par. 4-19 match the manufacturer's recommended
Hz] maximum motor speed. The Motor
Speed High Limit must exceed the value
in 4-12 Motor Speed Low Limit [Hz]. The
output frequency must not exceed 10%
of the switching frequency.
Function:
[ 0 - 1000.0 %] This function limits the
*
[Application torque on the shaft to
dependant] protect the mechanical
*
installation.
Function:
[ 0 - 1000.0 %] This function limits the torque on the
shaft to protect the mechanical instal-
lation.