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7. SPECIAL ADJUSTMENT FUNCTIONS

7.3 Adaptive vibration suppression control

(1) Function

Adaptive vibration suppression control is a function in which the servo amplifier detects machine

resonance and sets the filter characteristics automatically to suppress mechanical system vibration.

Since the filter characteristics (frequency, depth) are set automatically, you need not be conscious of

the resonance frequency of a mechanical system. Also, while adaptive vibration suppression control is

valid, the servo amplifier always detects machine resonance, and if the resonance frequency changes,

it changes the filter characteristics in response to that frequency.

Mechanical

system

response

level

Mechanical

system

response

level

Machine resonance point

Frequency Frequenc

Notch

depth

Notch

depth

Notch frequency Notch frequency

Frequency Frequenc

When machine resonance is large and frequency is low When machine resonance is small and frequency is high

POINT

The machine resonance frequency which adaptive vibration suppression

control can respond to is about 150 to 500Hz. Adaptive vibration

suppression control has no effect on the resonance frequency outside this

range. Use the machine resonance suppression filter for the machine

resonance of such frequency.

Adaptive vibration suppression control may provide no effect on a

mechanical system which has complex resonance characteristics or which

has too large resonance.

Under operating conditions in which sudden disturbance torque is imposed

during operation, the detection of the resonance frequency may malfunction

temporarily, causing machine vibration. In such a case, set adaptive

vibration suppression control to be "held" (parameter No. 25:

2 ) to fix

the characteristics of the adaptive vibration suppression control filter.

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Telex MR-J2S- Manual de usuario Pagina 116