Index
MENUMENU
MENUMENU
MENU [Unit] Access Default Min/Max Format Reg.Mode Level Ipa
Parameter Name
Description
ARTDrive V2 series - Instruction Manual Chapter 6 Parameter • 217
SPEED REG / Adaptive Speed
NOTE! Menu accessible with Access Level = FULL
The Adaptive Speed Gain function is active only in a Sensorless and Field Oriented
mode. It differents gains of the speed regulator according to the variations in the speed
value or another user defined signal (ex. load variations, diameter, PID output, etc ).
The block adapts the gains of the speed regulator according to the signal connected to
the F04.00 - Adaptive ref src source (standard connected to F04.24 - Adapt DigRef ,
block internal value in count) and to the Profile of the set gains.
The Profile of the set gain is stated by:
- three levels of speed Proportional and Integral gain, SpdPx gain % and Spd Ix
gain %
- two thresholds (thr), F04.20 - Adaptive speed 1 and F04.21 - Adaptive speed 2,
which define the point of the transitions between the three gain levels (see the
figure)
- two transition bands, F04.22 - Adaptive joint 1 and F04.23 - Adaptive joint 2, that
define the slope, by straight lines, connecting the gain levels.
Refer to the Speed Gain Profile diagram. It is possible to set the value of the internal
reference, F04.24 - Adapt DigRef , and its basic value, F04.25 - Adapt base value.
ASG function is defaulted for use with Ramp reference, Speed reference or Actual speed.
These variable's scaling are 16384 counts, corresponding to the drive B0E.00 - Full
scale speed parameter .
This is the reason why F04.25 - Adapt base value parameter is defaulted to 16384
counts.
F04.25 - Adapt base value parameter can also be changed if gain modification is driven
by some variable that has full scale different then 16384 counts. For example 4096
counts, that comes from bus or other variables present in the system.
It is possible to write an independent variable value to F04.24 - Adapt DigRef parameter.
NOTE! The selection of base value must be done prior to assigning thresholds and bands.
After any change of F04.25 - Adapt base value, gains must be reassigned.
Values assigned to thresholds and bands must be in ascending order. The value
assigned to F04.21 - Adaptive speed 1 parameter must be higher then F04.22 -
Adaptive speed 2 parameter .
Bands must be narrower then half the distance between F04.21 - Adaptive speed 1 and
F04.22 - Adaptive speed 2.
When the motor is stopped, the gain of the Speed Regulator is set by the F03.11 - Spd 0
P gain and F03.12 - Spd 0 I gain, if the speed 0 function is enabled.
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