Danfoss VLT series, Руководство по программированию

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3.6 Main Menu - Limits/Warnings - Group 4
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 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
Option: Function:
Selects the motor speed direction required.
Use this parameter to prevent unwanted
reversing.
[0] Clockwise Only operation in clockwise direction will
be allowed.
[2]
*
Both directions Operation in both clockwise and anti-
clockwise direction will be allowed.
NOTE
The setting in 4-10 Motor Speed Direction has impact on
the Flying Start in 1-73 Flying Start .
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
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 Speed Low Limit
must not exceed the setting in
4-14 Motor Speed High Limit [Hz] .
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
manufacturer’s maximum rated motor.
The Motor Speed High Limit must
4-13 Motor Speed High Limit [RPM]
Range: Function:
exceed the setting in 4-11 Motor Speed
Low Limit [RPM] . Only 4-11 Motor Speed
Low Limit [RPM] or 4-12 Motor Speed Low
Limit [Hz] will be displayed depending on
other parameters in the Main Menu and
depending on default settings
dependant on global location.
NOTE
Max. output frequency cannot exceed 10% of the inverter
switching frequency (
14-01 Switching Frequency ).
NOTE
Any changes in 4-13 Motor Speed High Limit [RPM] will reset
the value in 4-53 Warning Speed High to the same value as
set in 4-13 Motor Speed High Limit [RPM] .
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.
The Motor Speed High Limit can be set to
correspond to the manufacturer’s
recommended maximum of the motor
shaft. The Motor Speed High Limit must
exceed the in
4-12 Motor Speed Low Limit
[Hz] . Only 4-13 Motor Speed High Limit
[RPM] or 4-14 Motor Speed High Limit [Hz]
will be displayed depending on other
parameters in the Main Menu and
depending on default settings dependant
on global location.
NOTE
Max. output frequency cannot exceed 10% of the inverter
switching frequency (
14-01 Switching Frequency ).
4-16 Torque Limit Motor Mode
Range: Function:
Size
related
*
[ 0.0 -
1000.0 %] Enter the maximum torque limit for motor
operation. The torque limit is active in the
speed range up to and including the rated
motor speed set in
1-25 Motor Nominal
Speed . To protect the motor from reaching
the stalling torque, the default setting is
1.1 x the rated motor torque (calculated
value). See also
14-25 Trip Delay at Torque
Limit for further details.
If a setting in 1-00 Configuration Mode to
1-28 Motor Rotation Check is changed,
4-16 Torque Limit Motor Mode is not
automatically reset to the default setting.
Parameter Description
VLT
®
HVAC Drive Programming Guide
58 MG.11.CC.02 - VLT
®
is a registered Danfoss trademark
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