If KPROP is increased too far, overshoot or ringing will occur. The plot opposite shows the effect of setting KPROP to a value of 7.

This overshoot and/or ringing can be reduced by introducing a damping term - either KVEL or KDERIV...

7.The plot opposite shows how applying a value of 0.25 to KVEL (with KPROP set to 4.7), causes a response with a small overshoot but which settles quickly.

The ideal response is to have a sharp (square) response with very little overshoot and no oscillations.

The Step Response Statistics tab shows measured values which can be used as a further guide to tuning.

8.When you have tuned the motor, click Next > to continue.

4.3.4Jog test

Measured position

Demand position

Measured position

Demand position

This tab allows you to perform a jog test on the motor. This will start the motor rotating at a preset speed until it is stopped by you.

1.Set the demand speed and accelerations by clicking in the bottom three boxes and typing the required values.

2.Click either Jog -veor Jog +ve to perform the test. The Stop button stops the movement.

The top two boxes show real-time information about the jog move.

When you have completed your tests click Stop, followed by Disable Drive .

3.Click Next > to continue.

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Baldor MN1274 06/2001 installation manual Jog test