Digital Microstep Driver DM556N
5
3.2 Motor Wirings Description
Pin Name
Descriptions
AC
Power input, AC and DC universal. VAC: 15~40 V; VDC: 20~50 V
AC
A+
Motor phase A wirings. Interchange A+, A-, can change the running
direction of the motor once
A-
B+
Motor phase B wirings. Interchange B+, B-, can change the running
direction of the motor once
B-
3.3 Input Signals Description
DM556N has high-speed optocoupler inside that allows reception of long-line controller signal, open
collector signal, and PNP-type output signal. In the harsh environment, we recommend using a
long-line controller circuit to make the anti-interference ability strong. Taking the open collector and
PNP-type output as an example, and the connection circuit is as follows:
Figure 2: Connection to open-collector signal (common-anode)
