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the application needs a different standstill current, please contact Leadshine.
8. Wiring Notes
l
In order to improve anti-interference performance of the driver, it is recommended to use
twisted pair shield cable.
l
To prevent noise incurred in pulse/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.
l
If a power supply serves several drivers, separately connecting the drivers is recommended
instead of daisy-chaining.
l
It is prohibited to pull and plug connector P2 while the driver 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 driver.
9. Typical Connections
A complete stepping system should include stepping motor, stepping driver, power supply and
controller (pulse generator). The following figures are two typical connections of the M325.
Figure 10: Typical connection with open-collector controller
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M325 Micro Microstepping Driver Manual V2.0
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Figure 11: Typical connection with difference controller
10. Sequence Chart of Control Signals
In order to avoid some fault operations and deviations, PUL, DIR and ENA should abide by some
rules, shown as the following diagram:
Figure12: Sequence chart of control signals
Notes:
(1) t
: ENA must be ahead of DIR by at least 5ms. Usually, ENA+ and ENA- are NC (not
1
connected). See "Connector P1 Configurations" for more information.
(2) t
: DIR must be ahead of PUL effective edge by at least 5ms to ensure correct direction;
2
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M325 Micro Microstepping Driver Manual V2.0
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