Lite-On Technology Corp.
Industrial Automation
177
Low-pass filtering for resonance
suppression
Communication
address:
010AH
010BH
Resonance suppression unit
The drive is equipped with two notch filters with automatic resonance suppression, which can be turned on
by setting PB-15 to 1 or 2. The drive searches for and suppresses the resonance point automatically. The
found frequency point and attenuation rate will be filled in Resonance Filter 1 (PB-10) and (PB-11) and
Resonance Filter 2 (PB-12) and (PB-13) sequentially.
When PB-15 is set to 1, it is set to 0 (auto resonance suppression turned off) automatically after system
suppression. When PB-15 is set to 2, the search of resonance point continues.
The resonance exists if PB-15 is set to 1 or 2. If either the value of PB-11 or PB13 is 32, it is suggested to
reduce the speed bandwidth and reactivate the auto resonance suppression.
If values of both PB-11 and PB-13 are below 32 but resonance still exists, set PB-15 to 0 (auto resonance
suppression turned off) and adjust PB-11 and PB-13 manually to higher values. If the resonance still cannot
be suppressed, it is suggested to reduce the speed bandwidth and reuse the auto resonance suppression.
Before the manual adjustment of PB-11 and PB-13, check if the values of PB-11 and PB-13 are greater than
Countdown of
torque constant
Resistance gain for
the external
interference
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