LiteOn ISA-7-040-S1 - Page 179

Lite-On Technology Corp.
Industrial Automation
179
 Flow Chart for Resonance Suppression
The low-pass filter NLP (PB-17) is used to describe the resonance suppression. The Bode plot of the
system for resonance is as below.
When NLP starts to increase, the effect is illustrated in the Bode plot below. The resonance point will
be filtered by the resonant low-pass filter.
Reduce broadband
Servo on
Resonance?
Yes
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Set PB-15= 1.
Resonance?
PB-15 has been set for
three times.
PB-11 or PB-13 = 32
Set PB-15= 0
If PB-11>0, add 1 to PB-11.
If PB-13>0, add 1 to PB-13.
If PB-11=0, no accumulation is allowed.
If PB-13=0, no accumulation is allowed.
Is resonance improved?
Resonance?
Set PB-15= 0
End