3.6 Parameters: 4-** Main Menu - 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
exceeded.
A limit may generate a message in 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:
Function:
NOTICE
The setting in
has impact on the
flying start in
Selects the motor speed direction required.
Use this parameter to prevent unwanted
reversing.
[0]
Clockwise
Only operation in clockwise direction is
allowed.
[2]
*
Both
directions
Operation in both clockwise and counter-
clockwise direction is allowed.
4-11 Motor Speed Low Limit [RPM]
Range:
Function:
Size
related
*
[ 0 - par.
4-13
RPM]
Enter the minimum limit for motor speed
in RPM. 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
in Hz. The motor speed low limit can be
set to correspond to the minimum output
frequency of the motor shaft. The speed
low limit must not exceed the setting in
parameter 4-14 Motor Speed High Limit [Hz]
.
4-13 Motor Speed High Limit [RPM]
Range:
Function:
Size
related
*
[ par.
4-11 -
60000
RPM]
NOTICE
Any changes in
reset the value
in
parameter 4-53 Warning Speed High
to the value set in
parameter 4-13 Motor Speed High Limit
[RPM]
NOTICE
Max. output frequency cannot exceed
10% of the inverter switching
frequency (
).
Enter the maximum limit for motor speed in
RPM. The motor speed high limit can be set
to correspond to the manufacturer’s
maximum rated motor. The motor speed
high limit must exceed the setting in
parameter 4-11 Motor Speed Low Limit [RPM]
The parameter name appears as either
parameter 4-11 Motor Speed Low Limit [RPM]
or
parameter 4-12 Motor Speed Low Limit [Hz]
,
depending on:
•
The settings of other parameters in
the
Main Menu
.
•
Default settings based on
geographical location.
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
).
Parameter Descriptions
Programming Guide
MG11CE02
Danfoss A/S © 03/2015 All rights reserved.
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