Specifications

Velocity Drive Setup Ver. 0002 SSU - 9
For example, if SP4 = 1500 (150%)
and SP1 = 30 (0.030 A
RMS
/rpm),
The value for the proportional action Kp at low speeds will be:
the 150% of SP1, that is: 0.045 A
RMS
/rpm.
To properly adjust it, the effect of the velocity command filters prior to the PI must be
taken into account. This filters are described in the next section.
The next diagram shows the complete internal structure of the Velocity Loop of the DDS.
Depending on the system's response and the type of application, the user changes the PI
parameters.
The modifications to these parameters are immediately effective. When the desired
performance is achieved, these values must be Saved in the DDS, and then, the unit must be
Reset, (in this order).
To do this, follow the indications detailed in the chapter on "Saving into Flash memory" of this
chapter.