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Appendix

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12. Operation Data<br />

12.1 Frequency Response Characteristics<br />

Inverter ; FRN37VG7S-4<br />

Motor ; MVK6207A-C, 37kW, 1500/3600r/min<br />

Test condition ; Motor only<br />

12.2 Sample Measurement of Motor Wow<br />

Inverter ; FRN37VG7S-4<br />

Motor ; MVK6207A-C, 37kW, 1500/3600r/min<br />

Test condition ; Motor only<br />

12-1<br />

• Because of the improvement<br />

of the frequency response,<br />

1) The motor wow was<br />

reduced to approximately<br />

60% of the conventional<br />

one.<br />

2) Follow-up characteristics at<br />

the time of load fluctuation<br />

improved.<br />

3) Position synchronizing<br />

accuracy improved.<br />

4) Step response characteristics<br />

of speed improved.

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