Tuning Procedures

3.Enter the inertia value calculated into the Inertia Ratio parameter.

4.Set the Line Voltage to the applied voltage (default is 230 VAC).

5.Leave all other tuning parameters at the initial values.

6.Enable the drive and run the system.

7.Adjust Response to obtain the best performance.

Fully Optimized Level

1.Determine the actual system parameters.

2.Disable the drive.

3.Enter the parameters.

4.Line Voltage set to the applied voltage (default is 230 VAC).

5.Enable the drive and run the system.

6.Adjust Response to obtain the best performance.

General Tuning Hints

The Response is normally the final adjustment when tuning. For best performance the Response should be lower with a higher inertia mismatch (>10:1) and higher with a lower inertia mismatch.

If your system has some torsional compliance, such as with a jaw type coupling with a rubber spider, or if there is a long drive shaft, the Response should be decreased. The highest recommended Response with High Performance Gains enabled is 100 Hz.

Also, enabling the Low Pass Filter helps diminish the resonant frequency of torsionally compliant loads. In such cases, using the Low Pass Filter usually allows for higher Response values. The optimum Low Pass Filter frequency is at the frequency of the resonance.

Feedforwards can be enabled if the performance requirements are very demanding. However when using them, make sure the Inertia Ratio and Friction values are an accurate representation of the load. Otherwise, the system performance will actually be degraded or stability will suffer. Enabling the Feedforward makes the system less tolerant of inertia or friction variations during operation.

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Emerson FM-3 manual General Tuning Hints, Fully Optimized Level