Filter
Top Products
GEH-6385 Reference and Troubleshooting, 2300 V Drives Chapter 4 Wizards
•
••
•
4-39
Speed Regulator Tuneup
Speed Regulator Tuneup: Model
The simplified model of the speed regulator is:
Speed
Feedback
Speed
Command
Σ
ΣΣ
Σ
+
-
Σ
ΣΣ
Σ
+
-
integral
gain
proportional
filter
proportional
command gain
proportional
feedback gain
Σ
ΣΣ
Σ
+
+
Integrator
system
inertia
2
π
ππ
π
60
net
gain
Filter
Torque
Command
The system inertia can be either measured or entered and the gains can be entered
separately or calculated from bandwidth, damping and stiffness for a 1
st
and 2
nd
order
closed loop response.
Speed Regulator Tuneup: System Inertia
System inertia can be either measured by rotating the motor and watching the
acceleration produced by a constant torque or entered by the user.
Note The last measured/entered value is the default for entering a new value.
Speed Regulator Tuneup: Inertia Measurement
Command
This will perform the system inertia measurement by rotating the motor and
watching the acceleration produced by a constant torque. A dialog box will appear to
show the progress of the measurements.
Use of the Abort function will cancel the measurements and throw present results
away.
Advanced Help: (privilege level 4 required)
• If error “Problem With Torque for Rampup Test” occurs set At_MeasJ_Spd to
90% of the speed, in RPM, reached during test.
• If error “CoastDown Test Finished Prematurely” occurs set At_MeasJ_Spd to a
value, in RPM, that would require the motor 1 sec to coast down.