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.
NB!
The setting in par. 4-10
Motor Speed Direction
has impact on the Flying Start in par. 1-73
Flying Start
.
4-11 Motor Speed Low Limit [RPM]
Range: Function:
Application
dependent*
[Application dependant] 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 par. 4-13
Motor Speed High Limit [RPM]
.
4-12 Motor Speed Low Limit [Hz]
Range: Function:
Application
dependent*
[Application dependant] 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 par. 4-14
Motor Speed High Limit [Hz]
.
4-13 Motor Speed High Limit [RPM]
Range: Function:
Application
dependent*
[Application dependant] 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 exceed the setting in
par. 4-11
Motor Speed Low Limit [RPM]
. Only par. 4-11
Motor Speed Low Limit [RPM]
or
par. 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.
NB!
Max. output frequency cannot exceed 10% of the inverter switching frequency (par. 14-01
Switching Frequency
).
3 Parameter Description VLT
®
HVAC Drive Programming Guide
72
MG.11.C9.02 - VLT
®
is a registered Danfoss trademark
3
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