Standstill Current Setting; Wiring Notes; Typical Connection - Leadshine Technology DM542E User Manual

Standstill Current Setting

SW4 is used for this purpose. OFF meaning that the standstill current is set to be half of the selected dynamic current,
and ON meaning that standstill current is set to be the same as the selected dynamic current.
The current automatically reduced to 50% of the selected dynamic current 0.4 second after the last pulse. If the
application needs a different standstill current, please contact Leadshine.
Motor auto-identification and parameter auto-configuration
The drive will operate the function of motor auto-identification and parameter auto-configuration when power on, and
calculate the optimal parameter using for current control after this processing,, then the stepper motor can output
optimal torque.

8. Wiring Notes

In order to improve anti-interference performance of the drive, it is recommended to use twisted pair shield cable.

To prevent noise incurred in PUL/DIR signal, pulse/direction signal wires and motor wires should not be tied up

together. It is better to separate them by at least 10 cm, otherwise the disturbing signals generated by motor will
easily disturb pulse direction signals, causing motor position error, system instability and other failures.
If a power supply serves several drives, separately connecting the drives is recommended instead of

daisy-chaining.
It is prohibited to pull and plug connector P2 while the drive is powered ON, because there is high current flowing

through motor coils (even when motor is at standstill). Pulling or plugging connector P2 with power on will cause
extremely high back-EMF voltage surge, which may damage the drive.

9. Typical Connection

A complete stepping system should include stepping motor, stepping drive, power supply and controller (pulse
generator). A typical connection is shown as figure 9.
Figure 9: Typical connection
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DM542E Full Digital Stepper Drive Manual V2.0