Danfoss VLT AQUA Drive FC 202, Operating Instructions Manual

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Submersible deep well pumps can be damaged by running below minimum speed. A fast ramp time
below minimum pump speed is recommended. This parameter may be applied as a fast ramp rate
from Motor Speed Low Limit to zero speed.
8.2.5. 4-** Limits and Warnings
Parameter group for configuring limits and warnings.
4-11 Motor Speed Low Limit [RPM]
Range: Function:
0 RPM* [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 par. 4-13
Motor Speed High Limit [RPM] .
4-13 Motor Speed High Limit [RPM]
Range: Function:
1500. RPM* [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 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!
The output frequency value of the frequency converternot exceed a value higher than 1/10 of the switching frequency.
NB!
Any changes in par. 4-13 Motor Speed High Limit [RPM] will reset the value in par. 4-53 Warning Speed High to the same value as set
in par. 4-13 Motor Speed High Limit [RPM] .
8. How to programme the frequency converter
VLT
®
AQUA Drive
Operating Instructions
80
MG.20.M5.02 - VLT ® is a registered Danfoss trademark
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