ElmoMC SimplIQ Digital Servo Drives-Bell Getting Started User Manual
Page 57
The SimplIQ for Steppers Getting Started & Tuning and Commissioning Guide
MAN-BELGS (Ver. 1.1)
57
Figure 54: Frequency Editor, when no identification is available
The red points, and the list in the Frequency area, show the frequencies for plant
excitation. For every frequency there is also an associated excitement current
amplitude.
Before the identification you can see the default set of frequencies that the
Conductor sets before learning the plant.
Bigger current amplitudes generate a better signal to noise ratio, and are thus
better for identification. There are other considerations, however:
o
Large currents at high frequencies tend to saturate the amplifier voltage
due to motor inductance. This saturation is reflected in the identified
transfer function by decreased amplitude and increased delay.
o
Large current near resonant modes lead to unpleasant noises, or even
mechanical damage.
After clicking Run Identification the window appears as follows: