Lite-On Technology Corp.
Industrial Automation
82
5.5.6.
Solutions for mechanical resonance
ISA-7 provides three sets of Notch filters for users to suppress the mechanical HF resonance.
Analyze the resonance frequency using the computer software and enter the frequency value in PB-10, PB-
12 or PB-14. Try to keep the machine running repeatedly to test the effect on the resonance suppression. If
the resonance remains, use PB-11, PB-13 and PB-15 to increase the filter depth.
Please note that the system will be unstable if the filter depth is excessive and the resonance won't be
suppressed efficiently. In this case, it is suggested to reduce the speed bandwidth.
Use computer software to
analyze resonance frequency
Set the resonance
frequency
Give command to
operate repeatedly
Set the filter
depth
HF resonance
Done
