Main Menu - Limits/Warnings - Group - Danfoss VLT FC 100 Series Programming Manual

Parameter Description

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 Adjustable frequency drive 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
serial communication bus. A monitoring function may
initiate a warning or a trip, upon which the Adjustable
frequency drive 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 a clockwise direction will
be allowed.
[2] Both directions Operation in both a clockwise and counter-
*
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 [ 0 - par. Enter the minimum limit for motor
related 4-13 RPM] 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. Enter the minimum limit for motor
*
4-14 Hz] 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].
®
VLT HVAC Drive Programming Guide
4-13 Motor Speed High Limit [RPM]
Range:
Size
related
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:
Size related
NOTE!
Max. output frequency cannot exceed 10% of the inverter
switching frequency (14-01 Switching Frequency).
4-16 Torque Limit Motor Mode
Range:
Size related
4-17 Torque Limit Generator Mode
Range:
100.0 %
4-18 Current Limit
Range:
Size related
MG11CD22 - VLT ® is a registered Danfoss trademark
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.
The Motor Speed High Limit must
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.
[ par. 4-12 - par. 4-19 Hz]
*
[ 0.0 - 1000.0 %]
*
[ 0.0 - 1000.0 %]
*
[ 1.0 - 1000.0 %]
*
3 3
Function:
Function:
Function:
Function:
3-37