Danfoss VLT AQUA Drive Operating Instructions Manual page 75

®
VLT AQUA Drive
Operating Instructions
3-88 Final Ramp Time
Range:
*
0(off) [0(off) – 60s]
8.2.5. 4-** Limits and Warnings
Parameter group for configuring limits and warnings.
4-11 Motor Speed Low Limit [RPM]
Range:
*
Size related [0 - 60,000 RPM]
4-13 Motor Speed High Limit [RPM]
Range:
*
Size related [0 - 60,000 RPM]
NB!
The output frequency value of the frequency converter must not exceed a value higher than 1/10 of the switching frequency.
NB!
Any changes in par. 4-13 will reset the value in par. 4-53
8.2.6. 5-** Digital In/Out
Parameter group for configuring the digital input and output.
Function:
Set the Final Ramp Down Time to be used when ramping down from Check Valve Ramp End Speed and 0 RPM.
Final Ramp Down Time can be used as a quick ramp down time to prevent damage of pumps with thrust bearings.
When Final Ramp Time is in effect the Final Ramp will be used instead of the existing ramp down time (P3-42
or P3-52)
Function:
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]
Function:
Enter the maximum limit for motor speed. The Motor Speed High Limit can be set to correspond to the
manufacturer's maximum rated motor speed. The Motor Speed High Limit must exceed the setting in par. 4-11
Motor Speed Low Limit [RPM]
. Only par. 4-11 or par. 4-12 will be displayed depending on other parameters set
in the Main Menu and depending on default settings dependant on global geographical location.
Warning High Speed
®
MG.20.M4.02 - VLT is a registered Danfoss trademark
8. How to programme the frequency converter
.
to the same value as set in par. 4-13.
8
75