Parker AC30 - Page 426

D-166 Parameter Reference
AC30 series Variable Speed Drive
Parameter Name
No.
Path
Default
Range
Units
Writable
Spd Loop Aux Torq Dmd
0521
Parameters::Motor Control::Spd Loop
Settings
0.00
-300.00 to 300.00
%
ALWAYS
When the drive is operating in speed control mode, the value of this parameter is added on to the torque demand produced by the
speed loop PI. When the drive is operating in torque control mode (i.e. Set Torq Ctrl Only is TRUE) the speed loop PI does not
operate, and the torque demand becomes the sum of this parameter plus the DIRECT INPUT (if selected).
Spd Loop Adapt Thres
0523
Parameters::Motor Control::Spd Loop
Settings
0.00
0.00 to 10.00
%
ALWAYS
If the speed demand is less than the Spd Loop Adapt Thres, the speed loop proportional gain is the Spd Loop Adapt Pgain.
Spd Loop Adapt Pgain
0524
Parameters::Motor Control::Spd Loop
Settings
20.00
0.00 to 300.00
ALWAYS
Proportional gain used if speed demand < Spd Loop Adapt Thres.
Spd Demand Pos Lim
0525
Parameters::Motor Control::Spd Loop
Settings
110.00
-110.00 to 110.00
%
ALWAYS
This sets the upper limit of the speed demand.
Spd Demand Neg Lim
0526
Parameters::Motor Control::Spd Loop
Settings
-110.00
-110.00 to 110.00
%
ALWAYS
This sets the lower limit of the speed demand.
Sel Torq Ctrl Only
0527
Parameters::Motor Control::Spd Loop
Settings
FALSE
ALWAYS
Selects between Speed Control mode and Torque Control mode. When TRUE, (Torque Control mode) the torque demand output from
the speed loop feature is the sum of the Direct Input plus the Spd Loop Aux Torq Dmd parameter.
Functional Description
The speed error (speed demand minus speed feedback) is calculated and processed via a proportional + integral (PI) controller. The output of the
PI controller is a torque demand, which is passed directly to the torque control feature.