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MOONS’
MSSTAC6 Step Motor Drive User Manual
MOONS’
www.moons.com.cn
Step Smoothing Filter
If an application requires the drive to accept pulse & direction signals from a low speed motion controller,
it may need to be setup for a low step/rev setting such as full step (200 steps/rev) or half step (400
steps/rev) in order to achieve the desired motor speeds. In such cases, the step smoothing filter can provide
smoother, quieter motion than is normally possible with a full or half step drive. Some experimentation may
be required, but 50 Hz is usually a good place to start.
Note: the step smoothing filter, like most filters, creates a delay in the output (in this case the output
is the motion of the motor and load). For many applications, this delay is not important unless the motion is
tightly synchronized to other devices or processes. The figure below illustrates the time delay that results
from changing the step smoothing filter from 1000 Hz to 50 Hz. The entire move profile is delayed by about
45 milliseconds.
Velocity Mode
In velocity mode, the motor's speed is controlled by analog and digital inputs.
