Parameters: 4-** Limits/Warnings - Danfoss VLT AutomationDrive FC 302 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 [ 0 - par.
related 4-13
*
RPM]
4-12 Motor Speed Low Limit [Hz]
Range:
Size [ 0 -
related par. 4-14
*
Hz]
74
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 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 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
®
AutomationDrive FC 301/302 Programming Guide
4-12 Motor Speed Low Limit [Hz]
Range:
4-13 Motor Speed High Limit [RPM]
Range:
Size
related
*
NOTICE
Max. output frequency cannot exceed 10% of the
inverter switching frequency (parameter 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 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.
MG33MI02 - Rev. 2013-11-20
Function:
setting in parameter 4-14 Motor Speed High
Limit [Hz].
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
parameter 4-11 Motor Speed Low Limit
[RPM].
Function:
[ par. Enter the max limit for motor speed.
4-12 - parameter 4-14 Motor Speed High Limit [Hz]
par. 4-19 can match the manufacturer's
Hz] recommended 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.