Configuration; Control Path - Parker Compax3 Series Operating Instructions Manual

Parker EME
4.3.3.2

Configuration

In this chapter you can read about:
Control path ..................................................................................................................... 173
Motor parameters relevant for the control........................................................................ 174
Mass inertia ..................................................................................................................... 174
Nominal point data........................................................................................................... 174
Saturation values ............................................................................................................. 176
Quality of different feedback systems.............................................................................. 176
Typical problems of a non optimized control ................................................................... 177
Feedback error compensation ......................................................................................... 178
Commutation settings ...................................................................................................... 180
I²t - monitoring of the motor ............................................................................................. 180
Relevant appication parameters ...................................................................................... 183
Asynchronous motors ...................................................................................................... 187

Control path

For the motors, the knowledge of the mathematical model is a prerequisite.
Mathematically idealized model of the control path:
1 R /
K
U: Cotrol voltage
U : electromagnetically generated voltage in the motor
EMC
T: electric time constant of the motor winding
L: Winding Inductance
R: Winding Resistance
M : Drive torque of the motor
A
M : Load torque
L
M : Acceleration torque
B
I: Actual current r.m.s. (torque-producing)
K : Torque constant
T
J : Motor mass moment of inertia
mot
J : External mass moment of inertia
ext
J : Total mass moment of inertia
total
a: Acceleration
n: Velocity
192-120114 N5 C3I22T11 June 2008
1
K
T π
2
π
2
T
Setting up Compax3
173