Impulse PCW-5181 Advanced Advanced Tuning, Anti-Resonance, Current Reduction Mode, Profiling

Chapter 4 - Configuring Impulse with Application Developer

Advanced (Advanced Tuning)

The Advanced tab allows you to enable/disable and modify various advanced performance features of the Impulse drive.

Note: Observe decrease in

Gain when Multi-Stepping is

Enabled.

Anti-Resonance

•Enable this feature by selecting the Enabled check box. Ensure that both Damping Gains are configured if Anti-Resonance is enabled.

Current Reduction Mode

•Select Stop to enable the stop mode current reduction time-out period. Stop Mode reduces current by 25%. This time-out period is directly entered in milliseconds. The valid range is 6 to 19,656 ms.

•Select Idle to set the idle mode current reduction time-out period. This time-out period is directly entered in seconds. The valid range is 0 to 3600 seconds (0 = disabled).

•In the % box, enter the percentage that current will be reduced after the idle mode time- out has expired. The valid range is 0 to 100%.

Profiling

•Select Dynamic Smoothing Enabled by clicking on the check box and entering the recom- mended gain in the input box. Dynamic Smoothing™ is an IDC proprietary method of auto- matically reducing “jerk” (sudden change of acceleration) which is often inherent in move sequences generated by indexers. Dynamic Smoothing™ is similar in effect to so-called S- curve profiles. The softening of accel/decel transients sharply reduces ringing in the motor and various attached structures.

•Select Multi-Stepping Enabled for more aggressive dynamic smoothing. Gain will be 1/10 of the recommended gain when Dynamic Smoothing is enabled. Multi-Stepping™ is an IDC proprietary method of obtaining very smooth motion from step motors when using low resolution indexers, i.e. 200, 400, 1000 steps/rev. The Multi-Stepping™ feature, when enabled, executes coarse stepping regimens by using microsteps to fill-in between the widely-spaced, low-resolution steps. This is a form of interpolation that produces smooth motion in an otherwise coarse and noisy stepping system.

4-17