Connecting The Motor - Leadshine Technology DM422C User Manual

Figure 24: Finish tuning and save setting to the Drive
Notes:
However, if the user does not want to tune the current loop after changing a different stepping motor,
then Motor self-test and parameter auto-setup technology of the DM422C can replace manual
tuning the Drive with ProTuner. Just changes SW4 two times in 1 second, and then the Drive will
auto-identify the new motor and auto-configure related control parameters for optimum responses.
Recommend use this function after changing the driven motor.
SystemConfig:

In SystemConfig window, the user can configure Peak Current, Microstep, Command Type, Active
Edge, and eliminate motor resonance. A built-in pulse generator can be used for test during tuning.
See Picture 25.
PeakCur: Peak Current. The value is the peak current to the selected motor and can be set from 0.1
to 3.2 A. The user can set the peak current with ProTuner or DIP switches, see more information
about setting output current of the Drive in section 5 "Connecting the Motor" and section 7
"Selecting Microstep Resolution and Drive Output Current".
MicroStep: Microstep Resolution. The value is Drive's microstep resolution setting and can be set
from 1 to 512. The user can set the microstep with ProTuner or DIP switches, See more information
about setting output current of the Drive in section 7 "Selecting Microstep Resolution and Drive
Output Current".
StepAngle: Step Angle. The Drive will auto detect the Step Angle of the driven motor.
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DM422C Digital Stepping Driver Manual V1.0
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CommandType: Command Type of control signal, including PUL/DIR and CW/CCW. Set this
parameter according to Command Type of motion controller.
ActiveEdge: Active Edge. The user can set the triggered edge of pulse command signal in this panel.
When the Drive works in CW/CCW mode, no matter what level is at fixed level terminal, the Drive
can works properly.
Anti-Resonance Introduction
Step motors are highly resonant, which results in vibration and ringing. The ringing utilizes a large
fraction of the motor's available torque – thereby wasting performance. Furthermore, at mid-range
velocities, the resonance can become so severe that the motor looses synchronization and stalls. The
DM422C Drive provides robust anti-resonance control to stop the vibrations and maintain equilibrium.
This feature requires that the Drive be configured with respect to the total inertia in the system. If set
improperly, the effectiveness of the feature may be diminished.
The user can invoke or disable the feature by setting Amp and Phase values in SystemConfig
window. Amp and Phase values all zero is to disable the feature, otherwise is to invoke the feature. It
should be enabled unless the system configuration either does not need it or cannot tolerate it. A
system with loose couplings or viscous loading generally does not need this feature. If a system has
compliant (springy) coupling and is absent appreciably viscosity, it may not respond well to the active,
anti-resonant loop in the drive. The anti-resonant feature is not designed to damp such a 4
system. If the application of anti-resonance results in degradation or instability, it should be disabled.
st
1 ResonanceArea: Parameters for 1
Amp1 is Amplitude adjustment for 1
Phase1 is Phase adjustment for 1
or move the slider bar back and forth to get an optimum value.
LowerLimit is the Lower Limit of the 1
finds it during move the slider bar of internal pulse generator.
UpperLimit is the Upper Limit of the 1
nd
2 ResonanceArea: Parameters for 2
Default Amp2 and Phase2 values are zero.
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DM422C Digital Stepping Driver Manual V1.0
st
resonance area. Usually between 0.6rps and 1.2rps.
st
resonance area.
st
resonance area. The user can enter a value directly in the text box
st
resonance area, and the user can capture this value when
st
resonance area. Default Amp1 and Phase1 values are zero.
nd
resonance area. Usually between 1.2rps and 2.4rps.
24
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