Parameter Reference
D-108
AC30V series Variable Speed Drive
Spd Loop Settings
Parameters::Motor Control::Spd Loop Settings
This function block controls the speed of the motor by comparing the actual speed to the demanded speed, and applying more or less torque in
response to the error.
Only applies to SVC control mode, IM or PMAC.
PNO Parameter Descriptions
Speed Loop Auto Set
Only for PMAC Motor
TRUE : Allows to automatically calculate speed loop control parameters :
Speed Loop Pgain
and
Speed Loop I Time
.
To do a correct estimation,
Ratio Load Mot Inert
should be correctly filled in.
FALSE : no automatic calculation
Ratio Load Mot Inert
Only for PMAC Motor
Enter the correct inertia ratio between the load and the motor (For a no load condition, a value of 0.1 should be used).
This is used to automatically estimate the correct
Speed Loop Pgain
and
Speed Loop I Time
.
Speed Loop Bandwidth
Only for PMAC Motor
When
Speed Loop Auto Set
is TRUE, allows to select the speed loop bandwidth level :
Low :provides a low speed loop bandwidth
Medium : provides a medium speed loop bandwidth
High : provides a high speed loop bandwidth
Speed Loop Pgain
Sets the proportional gain of the loop.
Speed error x proportional gain = torque percent.
Speed Loop I Time
This is the integral time constant of the speed loop. A speed error which causes the proportional term to produce a torque demand T,
will cause the integral term to also ramp up to a torque demand T after a time equal to
Speed Loop I Time
.
Speed Loop Int Defeat
When TRUE, the integral term does not operate.
