Parameters: Limits/Warnings - Danfoss FC 300 Design Manual

FC 300 Design Guide
Parameters: Limits/Warn-
ings
4-** Limits and Warnings
Parameter group for configuring limits and warn-
ings.
4-1* Motor Limits
Define torque, current and speed limits for the
motor, and the reaction of the frequency convert-
er when the limits are exceeded.
A limit may generate a message on the display. A
warning will always generate a message on the
display or on the fieldbus. A monitoring function
may initiate a warning or a trip, upon which the
frequency converter will stop and generate an
alarm message.
4-10 Motor Speed Direction
Value:
Clockwise
Counter clockwise
Both directions
Function:
Select the motor speed direction(s) required. Use
this parameter to prevent unwanted reversing.
When par. 1-00 Configuration Mode is set to Proc-
ess [3], par. 4-10 is set to Clockwise [0] as de-
fault. The setting in par. 4-10 does not limit
options for setting par.4-13.
This parameter cannot be adjusted while the mo-
tor is running.
4-11 Motor Speed Low Limit [RPM]
Value:
0 - par. 4-13
Function:
Enter the minimum limit for motor speed. The Mo-
tor Speed Low Limit can be set to correspond to
the manufacturer's recommended minimum mo-
tor speed. The Motor Speed Low Limit must not
exceed the setting in par. 4-13 Motor Speed High
Limit [RPM].
4-12 Motor Speed Low Limit [Hz]
Value:
0 - par. 4-14
factory setting
160
How to Programme
[0]
[1]
[2]
0RPM
0Hz
() display text [] value for use in communication via serial communication port
MG.33.B7.02 - VLT is a registered Danfoss trademark
Function:
Enter the minimum limit for motor speed. The Mo-
tor 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 par. 4-14 Motor Speed High Limit [Hz].
4-13 Motor Speed High Limit [RPM]
Value:
Par. 4-11 - 60.000
Function:
Enter the maximum limit for motor speed. The
Motor Speed High Limit can be set to correspond
to the manufacturer's maximum rated motor
speed. The Motor Speed High Limit must exceed
the setting in par. 4-11 Motor Speed Low Limit
[RPM].
NB!
The output frequency value of the fre-
quency converter must not exceed a
value higher than 1/10 of the switch-
ing frequency.
4-14 Motor Speed High Limit [Hz]
Value:
Par. 4-12 - 1000
Function:
Enter the maximum limit for motor speed. The
Motor Speed High Limit can be set to correspond
to the manufacturer's recommended maximum
frequency of the motor shaft. The Motor Speed
High Limit must exceed the setting in par. 4-12
Motor Speed Low Limit [Hz].
NB!
The output frequency value of the fre-
quency converter must not exceed a
value higher than 1/10 of the switch-
ing frequency.
4-16 Torque Limit Motor Mode
Value:
0.0 - Variable Limit %
Function:
Sets the torque limit for motor operation. The tor-
que limit is active in the speed range up to the
3600. RPM
120 Hz
160.0 %