DM542E Digital Stepper Drive User Manual
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3. Connection Pin Assignments and LED Indication
The DM542E has two connector blocks P1&P2 (see above picture). P1 is for control signals connections, and P2 is for
power and motor connections. The following tables are brief descriptions of the two connectors. More detailed
descriptions of the pins and related issues are presented in section 4, 5, 9.
3.1 Connector P1 Configurations
Pin Function
Details
PUL+
Pulse signal: Pulse active at rising edge; 4-5V when PUL-HIGH, 0-0.5V when PUL-LOW.
Minimal pulse width of 2.5μs. Add a resistor for current-limiting at +12V or +24V input logic
voltage (1K for +12V, 2k for +24V). The same as DIR and ENA signals.
PUL-
DIR+
DIR signal: This signal has low/high voltage levels to represent two directions of motor
rotation.. Minimal direction setup time of 5μs. Also swapping the connection of two wires of a
coil (e.g. A+ and A-) to the drive will reverse motor direction.
DIR-
ENA+
Enable signal: This signal is used for enabling/disabling the drive. High level +5V (NPN
control signal) for enabling the drive and low level for disabling the drive. PNP and
Differential control signals are on the contrary, namely Low level for enabling. By default it
is left
UNCONNECTED (ENABLED)
.
ENA-
!
Notice
Notes:
(1) shielding control signal wires is suggested; (2) To avoid interference, don’t tie PUL/DIR control
signal and motor wires together
3.2 Connector P2 Configurations
Pin Function
Details
GND
Power supply ground connection.
+V
Power supply positive connection. Suggest 24-48VDC power supply voltage
A+, A-
Motor Phase A connections. Connect motor A+ wire to A+ Pin; motor A- wire to A-
B+, B-
Motor Phase B connections. Connect motor B+ wire to B+ Pin; motor B- wire to B-
!
Warning
Warning:
Don’t plug or unplug the P1 & P2 terminal block to avoid drive damage or injury when DM542E
is powered on.
