Main Menu - Limits/Warnings - Group - Danfoss VLT FC 103 Programming Manual

Parameter Description

3.6 Main Menu - Limits/Warnings - Group 4

3.6.1 4-** Limits and Warnings
Parameter group for configuring limits and warnings.
3.6.2 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 [ 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 Refrigeration 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).
®
MG16H102 - 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.
Function:
[ par. Enter the maximum limit for motor speed.
4-12 - The Motor Speed High Limit can be set to
*
par. 4-19 correspond to the manufacturer's
Hz] 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.
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