Using P7000Tools
04/06
Danaher Motion
4.4.7 X-SMOOTHNESS
Adjusting your Motor for Maximum Smoothness with the X-Smoothness
Feature
The X-Smoothness feature helps eliminate undesirable motor vibration
effects due to the 3 major resonance frequency responses: Fundamental,
2
nd
Harmonic and 4
th
Harmonic. The X-Smoothness settings allow you to
enter compensation values, which cancel these resonance responses.
X-Smoothness #1:
L1
Amplitude adjustment for 4
th
harmonic
L2
Phase adjustment for 4
th
harmonic
NOTE
All Danaher Motion's standard Pacific Scientific
motors, which have been characterized for use with
the P7000 drive, have nominal values for L1 & L2
stored in the motor files. Variances in the materials
and magnets of two-step motors of the same type
can affect comparable motor performance by as
much as ±10%. Due to these variances, the nominal
settings may not be the best possible settings for a
given motor.
X-Smoothness #2:
M1
Amplitude adjustment for 2
nd
harmonic
M2
Phase adjustment for 2
nd
harmonic
X-Smoothness #3
H1
DC offset adjustment for phase A
H2
DC offset adjustment for phase B
Procedure for Achieving Optimum Performance
Step 1
:
Run the Auto X-Smoothness Probe. The X-Smoothness Probe
typically comes within 95% of the best adjustment values and
finds the exact test speeds for the given motor.
32 Rev
D
M-SD-7AC-01