RMS Technologies IMD23 W/ POLE DAMPING TECHNOLOGY - Manual (Page 18)

RMS Technologies Page 18 Version 1.10
IMD23/23DE Manual 12/3/2007
ON: Reads the step signal on the rising edge or positive edge
OFF: Reads the step signal on the falling edge or negative edge
Below depicts a step pulse train waveform where the rising edge is more of a curve. If the
IMD23 and configuration module is set to read this type of signal on the rising edge,
inaccurate steps and unsmooth motion may occur.
It is best to switch the step sensing to the negative edge, or falling edge. Notice in this
example, the falling edge is a clear signal and a definite difference between high to low.
Example of a bad rising edge waveform
Below is an example of a good step pulse waveform where sensing the step on either edge
would be fine: